/home/llmeval/.local/share/uv/tools/cubbi/lib/python3.12/site-packages/click/core.py:1213: UserWarning: The parameter -m is used more than once. Remove its duplicate as parameters should be unique. parser = self.make_parser(ctx) /home/llmeval/.local/share/uv/tools/cubbi/lib/python3.12/site-packages/click/core.py:1206: UserWarning: The parameter -m is used more than once. Remove its duplicate as parameters should be unique. self.parse_args(ctx, args) Using UID: 1000, GID: 1000 Forwarding environment variable OPENROUTER_API_KEY to container Mounting local directory /home/llmeval/llmeval/runs/run_20260108_150044/task9_cpp_footguns/openrouter-google-gemini-2.5-flash-preview-09-2025/workspace to /app No project_name provided - skipping configuration directory setup. Session created successfully! Session ID: 39332629 Image: opencode Executing command and waiting for completion... Container will exit after command completes. Command logs: Initializing opencode v1.0.0 Setting up user 'cubbi' with UID: 1000, GID: 1000 Setting up standard directories Created directory: /app Created directory: /cubbi-config Created directory: /cubbi-config/home Creating /home/cubbi as symlink to /cubbi-config/home Created directory: /cubbi-config/home/.local Copied /root/.local/bin to user directory Running opencode-specific initialization Added litellm custom provider with 147 models to OpenCode configuration Added openrouter standard provider with 347 models to OpenCode configuration Set default model to openrouter/google/gemini-2.5-flash-preview-09-2025 Updated OpenCode configuration at /home/cubbi/.config/opencode/config.json with 2 providers No MCP servers to integrate --- Executing initial command --- Executing user command: if [ -f install.sh ]; then bash install.sh; fi; echo "--- TASK BEGIN ---"; cat task.md; echo "--- TASK END ---"; cd input && opencode run --print-logs < ../task.md Executing as cubbi: sh -c if [ -f install.sh ]; then bash install.sh; fi; echo "--- TASK BEGIN ---"; cat task.md; echo "--- TASK END ---"; cd input && opencode run --print-logs < ../task.md Installing Docker... Docker installed C++ compilation will use gcc:13 Docker image to avoid host path conflicts --- TASK BEGIN --- # C++ Bug Hunt: Fix Subtle Errors You'll find several C++ files in the current directory. Each file contains realistic code that does something useful, but has ONE subtle bug. ## Your Task Fix the bug in each file so that: 1. The code compiles without warnings (`-Wall -Wextra -Werror`) 2. The code passes sanitizer checks (ASan/UBSan) 3. The code produces the correct expected output ## Files - `virtual_destructor.cpp` - Plugin system with memory management - `reference_to_temporary.cpp` - Configuration system - `iterator_invalidation.cpp` - Event queue processor - `unsigned_underflow.cpp` - Ring buffer implementation - `dangling_cstr.cpp` - Log formatting system - `init_order.cpp` - Coordinate system with units - `off_by_one.cpp` - Matrix border detection - `int_overflow.cpp` - Bulk price calculator Each file is independent. Fix bugs **IN PLACE** (modify the files in the same directory). PS: You are currently working in an automated system and cannot ask any question or have back and forth with an user. --- TASK END --- INFO 2026-01-08T16:11:40 +947ms service=default version=1.0.212 args=["run","--print-logs"] opencode INFO 2026-01-08T16:11:40 +4ms service=default directory=/app/input creating instance INFO 2026-01-08T16:11:40 +1ms service=project directory=/app/input fromDirectory INFO 2026-01-08T16:11:40 +14ms service=storage index=0 running migration ERROR 2026-01-08T16:11:40 +5ms service=storage index=0 failed to run migration INFO 2026-01-08T16:11:40 +0ms service=storage index=1 running migration INFO 2026-01-08T16:11:40 +15ms service=default directory=/app/input bootstrapping INFO 2026-01-08T16:11:40 +23ms service=config path=/home/cubbi/.config/opencode/config.json loading INFO 2026-01-08T16:11:40 +97ms service=config path=/home/cubbi/.config/opencode/opencode.json loading INFO 2026-01-08T16:11:40 +20ms service=config path=/home/cubbi/.config/opencode/opencode.jsonc loading INFO 2026-01-08T16:11:40 +29ms service=bun cmd=["/opt/node/lib/node_modules/opencode-ai/node_modules/opencode-linux-x64/bin/opencode","add","@opencode-ai/plugin@1.0.212","--exact"] cwd=/home/cubbi/.config/opencode running INFO 2026-01-08T16:11:41 +898ms service=bun code=0 stdout=bun add v1.3.5 (1e86cebd) installed @opencode-ai/plugin@1.0.212 3 packages installed [874.00ms] stderr=Resolving dependencies Resolved, downloaded and extracted [12] Saved lockfile done INFO 2026-01-08T16:11:41 +1ms service=bun cmd=["/opt/node/lib/node_modules/opencode-ai/node_modules/opencode-linux-x64/bin/opencode","install"] cwd=/home/cubbi/.config/opencode running INFO 2026-01-08T16:11:41 +20ms service=bun code=0 stdout=bun install v1.3.5 (1e86cebd) Checked 3 installs across 4 packages (no changes) [3.00ms] stderr= done INFO 2026-01-08T16:11:41 +18ms service=plugin path=opencode-copilot-auth@0.0.9 loading plugin INFO 2026-01-08T16:11:41 +6ms service=bun pkg=opencode-copilot-auth version=0.0.9 installing package using Bun's default registry resolution INFO 2026-01-08T16:11:41 +0ms service=bun cmd=["/opt/node/lib/node_modules/opencode-ai/node_modules/opencode-linux-x64/bin/opencode","add","--force","--exact","--cwd","/home/cubbi/.cache/opencode","opencode-copilot-auth@0.0.9"] cwd=/home/cubbi/.cache/opencode running INFO 2026-01-08T16:11:41 +247ms service=bun code=0 stdout=bun add v1.3.5 (1e86cebd) installed opencode-copilot-auth@0.0.9 1 package installed [231.00ms] stderr=Resolving dependencies Resolved, downloaded and extracted [4] Saved lockfile done INFO 2026-01-08T16:11:41 +9ms service=plugin path=opencode-anthropic-auth@0.0.5 loading plugin INFO 2026-01-08T16:11:41 +2ms service=bun pkg=opencode-anthropic-auth version=0.0.5 installing package using Bun's default registry resolution INFO 2026-01-08T16:11:41 +1ms service=bun cmd=["/opt/node/lib/node_modules/opencode-ai/node_modules/opencode-linux-x64/bin/opencode","add","--force","--exact","--cwd","/home/cubbi/.cache/opencode","opencode-anthropic-auth@0.0.5"] cwd=/home/cubbi/.cache/opencode running INFO 2026-01-08T16:11:42 +1087ms service=bun code=0 stdout=bun add v1.3.5 (1e86cebd) + opencode-copilot-auth@0.0.9 installed opencode-anthropic-auth@0.0.5 14 packages installed [1064.00ms] stderr=Resolving dependencies Resolved, downloaded and extracted [50] Saved lockfile done INFO 2026-01-08T16:11:42 +65ms service=bus type=* subscribing INFO 2026-01-08T16:11:42 +0ms service=bus type=session.updated subscribing INFO 2026-01-08T16:11:42 +0ms service=bus type=message.updated subscribing INFO 2026-01-08T16:11:42 +1ms service=bus type=message.part.updated subscribing INFO 2026-01-08T16:11:42 +0ms service=bus type=session.updated subscribing INFO 2026-01-08T16:11:42 +0ms service=bus type=message.updated subscribing INFO 2026-01-08T16:11:42 +0ms service=bus type=message.part.updated subscribing INFO 2026-01-08T16:11:42 +0ms service=bus type=session.diff subscribing INFO 2026-01-08T16:11:42 +1ms service=format init INFO 2026-01-08T16:11:42 +0ms service=bus type=file.edited subscribing INFO 2026-01-08T16:11:42 +1ms service=lsp serverIds=deno, typescript, vue, eslint, oxlint, biome, gopls, ruby-lsp, pyright, elixir-ls, zls, csharp, fsharp, sourcekit-lsp, rust, clangd, svelte, astro, jdtls, yaml-ls, lua-ls, php intelephense, dart, ocaml-lsp, bash, terraform, texlab, dockerfile, gleam, clojure-lsp, nixd, tinymist, haskell-language-server enabled LSP servers INFO 2026-01-08T16:11:42 +5ms service=bus type=command.executed subscribing INFO 2026-01-08T16:11:42 +201ms service=server method=POST path=/session request INFO 2026-01-08T16:11:42 +2ms service=server status=started method=POST path=/session request INFO 2026-01-08T16:11:42 +12ms service=session id=ses_4619f328dffeoQjXZ8RJ16tIX1 version=1.0.212 projectID=global directory=/app/input title=New session - 2026-01-08T16:11:42.834Z time={"created":1767888702834,"updated":1767888702834} created INFO 2026-01-08T16:11:42 +21ms service=bus type=session.created publishing INFO 2026-01-08T16:11:42 +1ms service=bus type=session.updated publishing INFO 2026-01-08T16:11:42 +4ms service=server status=completed duration=38 method=POST path=/session request INFO 2026-01-08T16:11:42 +11ms service=server method=GET path=/config request INFO 2026-01-08T16:11:42 +0ms service=server status=started method=GET path=/config request INFO 2026-01-08T16:11:42 +1ms service=server status=completed duration=1 method=GET path=/config request INFO 2026-01-08T16:11:42 +13ms service=server method=GET path=/event request INFO 2026-01-08T16:11:42 +0ms service=server status=started method=GET path=/event request INFO 2026-01-08T16:11:42 +1ms service=server event connected INFO 2026-01-08T16:11:42 +4ms service=bus type=* subscribing INFO 2026-01-08T16:11:42 +5ms service=server status=completed duration=10 method=GET path=/event request INFO 2026-01-08T16:11:42 +13ms service=server method=POST path=/session/ses_4619f328dffeoQjXZ8RJ16tIX1/message request INFO 2026-01-08T16:11:42 +0ms service=server status=started method=POST path=/session/ses_4619f328dffeoQjXZ8RJ16tIX1/message request INFO 2026-01-08T16:11:42 +12ms service=server status=completed duration=12 method=POST path=/session/ses_4619f328dffeoQjXZ8RJ16tIX1/message request INFO 2026-01-08T16:11:42 +15ms service=bus type=message.updated publishing INFO 2026-01-08T16:11:42 +5ms service=provider status=started state INFO 2026-01-08T16:11:42 +7ms service=models.dev file={} refreshing INFO 2026-01-08T16:11:43 +53ms service=provider init INFO 2026-01-08T16:11:43 +16ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:43 +15ms service=bus type=session.updated publishing INFO 2026-01-08T16:11:43 +9ms service=bus type=session.status publishing INFO 2026-01-08T16:11:43 +1ms service=session.prompt step=0 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 loop INFO 2026-01-08T16:11:43 +21ms service=provider providerID=openrouter found INFO 2026-01-08T16:11:43 +9ms service=provider providerID=opencode found INFO 2026-01-08T16:11:43 +1ms service=provider providerID=litellm found INFO 2026-01-08T16:11:43 +1ms service=provider status=completed duration=133 state INFO 2026-01-08T16:11:43 +22ms service=llm providerID=openrouter modelID=anthropic/claude-haiku-4.5 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=true agent=title stream INFO 2026-01-08T16:11:43 +12ms service=provider status=started providerID=openrouter getSDK INFO 2026-01-08T16:11:43 +0ms service=provider providerID=openrouter pkg=@ai-sdk/openai-compatible using bundled provider INFO 2026-01-08T16:11:43 +1ms service=provider status=completed duration=1 providerID=openrouter getSDK INFO 2026-01-08T16:11:43 +5ms service=bus type=message.updated publishing INFO 2026-01-08T16:11:43 +2ms service=session.prompt status=started resolveTools INFO 2026-01-08T16:11:43 +8ms service=llm providerID=openrouter modelID=anthropic/claude-haiku-4.5 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=true agent=title params={"options":{"reasoningEffort":"minimal"}} params INFO 2026-01-08T16:11:43 +27ms service=tool.registry status=started invalid INFO 2026-01-08T16:11:43 +1ms service=tool.registry status=started bash INFO 2026-01-08T16:11:43 +0ms service=bash-tool shell=/usr/bin/bash bash tool using shell INFO 2026-01-08T16:11:43 +1ms service=tool.registry status=started read INFO 2026-01-08T16:11:43 +0ms service=tool.registry status=started glob INFO 2026-01-08T16:11:43 +0ms service=tool.registry status=started grep INFO 2026-01-08T16:11:43 +0ms service=tool.registry status=started edit INFO 2026-01-08T16:11:43 +0ms service=tool.registry status=started write INFO 2026-01-08T16:11:43 +0ms service=tool.registry status=started task INFO 2026-01-08T16:11:43 +0ms service=tool.registry status=started webfetch INFO 2026-01-08T16:11:43 +0ms service=tool.registry status=started todowrite INFO 2026-01-08T16:11:43 +0ms service=tool.registry status=started todoread INFO 2026-01-08T16:11:43 +0ms service=tool.registry status=started skill INFO 2026-01-08T16:11:43 +4ms service=tool.registry status=completed duration=6 invalid INFO 2026-01-08T16:11:43 +0ms service=tool.registry status=completed duration=4 read INFO 2026-01-08T16:11:43 +0ms service=tool.registry status=completed duration=4 glob INFO 2026-01-08T16:11:43 +0ms service=tool.registry status=completed duration=4 grep INFO 2026-01-08T16:11:43 +0ms service=tool.registry status=completed duration=4 edit INFO 2026-01-08T16:11:43 +0ms service=tool.registry status=completed duration=4 write INFO 2026-01-08T16:11:43 +0ms service=tool.registry status=completed duration=4 webfetch INFO 2026-01-08T16:11:43 +0ms service=tool.registry status=completed duration=4 todowrite INFO 2026-01-08T16:11:43 +0ms service=tool.registry status=completed duration=4 todoread INFO 2026-01-08T16:11:43 +0ms service=tool.registry status=completed duration=5 bash INFO 2026-01-08T16:11:43 +1ms service=tool.registry status=completed duration=5 task INFO 2026-01-08T16:11:43 +23ms service=tool.registry status=completed duration=28 skill INFO 2026-01-08T16:11:43 +18ms service=session.prompt status=completed duration=83 resolveTools INFO 2026-01-08T16:11:43 +20ms service=bus type=message.updated publishing INFO 2026-01-08T16:11:43 +3ms service=llm providerID=openrouter modelID=anthropic/claude-haiku-4.5 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=true agent=title stream INFO 2026-01-08T16:11:43 +1ms service=llm providerID=openrouter modelID=anthropic/claude-haiku-4.5 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=true agent=title params={"options":{"reasoningEffort":"minimal"}} params INFO 2026-01-08T16:11:43 +3ms service=bus type=session.updated publishing INFO 2026-01-08T16:11:43 +3ms service=bus type=session.diff publishing INFO 2026-01-08T16:11:43 +6ms service=session.processor process INFO 2026-01-08T16:11:43 +0ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build stream INFO 2026-01-08T16:11:43 +1ms service=provider status=started providerID=openrouter getSDK INFO 2026-01-08T16:11:43 +12ms service=provider status=completed duration=12 providerID=openrouter getSDK INFO 2026-01-08T16:11:43 +2ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build params={"temperature":1,"topP":0.95,"topK":64,"options":{}} params INFO 2026-01-08T16:11:43 +16ms service=bus type=session.status publishing ERROR 2026-01-08T16:11:43 +596ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:11:43 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:11:43 +92ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:43 +6ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:43 +5ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:44 +43ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:44 +102ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:44 +94ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:44 +257ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:44 +182ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:44 +99ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:44 +6ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:44 +13ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:44 +10ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:44 +12ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:44 +2ms service=bus type=message.updated publishing The user wants me to fix one subtle bug in each of the provided C++ files: `virtual_destructor.cpp`, `reference_to_temporary.cpp`, `iterator_invalidation.cpp`, `unsigned_underflow.cpp`, `dangling_cstr.cpp`, `init_order.cpp`, `off_by_one.cpp`, and `int_overflow.cpp`. I need to ensure the fixed code compiles, passes sanitizer checks, and produces the correct output. Since I don't have the files yet, my first step is to use the `glob` tool to list all files in the current directory to confirm their presence and then use the `read` tool to inspect the contents of each C++ file, starting with `virtual_destructor.cpp`. I will then analyze each file individually and propose a fix using the `edit` tool. I will start by listing all C++ files in the current directory to make sure they are all present. INFO 2026-01-08T16:11:44 +11ms service=bus type=message.updated publishing INFO 2026-01-08T16:11:44 +1ms service=bus type=session.status publishing INFO 2026-01-08T16:11:44 +0ms service=session.prompt step=1 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 loop |  Glob app/input INFO 2026-01-08T16:11:44 +6ms service=bus type=message.updated publishing INFO 2026-01-08T16:11:44 +3ms service=llm providerID=openrouter modelID=anthropic/claude-haiku-4.5 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=true agent=title stream INFO 2026-01-08T16:11:44 +0ms service=llm providerID=openrouter modelID=anthropic/claude-haiku-4.5 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=true agent=title params={"options":{"reasoningEffort":"minimal"}} params INFO 2026-01-08T16:11:44 +8ms service=bus type=session.updated publishing INFO 2026-01-08T16:11:44 +0ms service=bus type=session.diff publishing INFO 2026-01-08T16:11:44 +15ms service=bus type=message.updated publishing INFO 2026-01-08T16:11:44 +1ms service=session.prompt status=started resolveTools INFO 2026-01-08T16:11:44 +0ms service=tool.registry status=started invalid INFO 2026-01-08T16:11:44 +1ms service=tool.registry status=started bash INFO 2026-01-08T16:11:44 +0ms service=bash-tool shell=/usr/bin/bash bash tool using shell INFO 2026-01-08T16:11:44 +0ms service=tool.registry status=started read INFO 2026-01-08T16:11:44 +0ms service=tool.registry status=started glob INFO 2026-01-08T16:11:44 +0ms service=tool.registry status=started grep INFO 2026-01-08T16:11:44 +0ms service=tool.registry status=started edit INFO 2026-01-08T16:11:44 +0ms service=tool.registry status=started write INFO 2026-01-08T16:11:44 +0ms service=tool.registry status=started task INFO 2026-01-08T16:11:44 +0ms service=tool.registry status=started webfetch INFO 2026-01-08T16:11:44 +0ms service=tool.registry status=started todowrite INFO 2026-01-08T16:11:44 +0ms service=tool.registry status=started todoread INFO 2026-01-08T16:11:44 +0ms service=tool.registry status=started skill INFO 2026-01-08T16:11:44 +1ms service=tool.registry status=completed duration=1 invalid INFO 2026-01-08T16:11:44 +0ms service=tool.registry status=completed duration=1 read INFO 2026-01-08T16:11:44 +0ms service=tool.registry status=completed duration=1 glob INFO 2026-01-08T16:11:44 +0ms service=tool.registry status=completed duration=1 grep INFO 2026-01-08T16:11:44 +0ms service=tool.registry status=completed duration=1 edit INFO 2026-01-08T16:11:44 +0ms service=tool.registry status=completed duration=1 write INFO 2026-01-08T16:11:44 +0ms service=tool.registry status=completed duration=1 webfetch INFO 2026-01-08T16:11:44 +1ms service=tool.registry status=completed duration=2 todowrite INFO 2026-01-08T16:11:44 +0ms service=tool.registry status=completed duration=2 todoread INFO 2026-01-08T16:11:44 +0ms service=tool.registry status=completed duration=2 bash INFO 2026-01-08T16:11:44 +0ms service=tool.registry status=completed duration=2 skill INFO 2026-01-08T16:11:44 +0ms service=tool.registry status=completed duration=2 task INFO 2026-01-08T16:11:44 +5ms service=session.prompt status=completed duration=8 resolveTools INFO 2026-01-08T16:11:44 +14ms service=session.processor process INFO 2026-01-08T16:11:44 +1ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build stream INFO 2026-01-08T16:11:44 +0ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build params={"temperature":1,"topP":0.95,"topK":64,"options":{}} params INFO 2026-01-08T16:11:44 +17ms service=bus type=session.status publishing ERROR 2026-01-08T16:11:44 +93ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:11:44 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:11:45 +479ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:45 +16ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:45 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:45 +43ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:45 +82ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:45 +8ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:45 +9ms service=lsp file=/app/input/virtual_destructor.cpp touching file INFO 2026-01-08T16:11:45 +2ms service=file.time sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 file=/app/input/virtual_destructor.cpp read INFO 2026-01-08T16:11:45 +15ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:45 +6ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:45 +9ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:45 +4ms service=bus type=message.updated publishing INFO 2026-01-08T16:11:45 +14ms service=lsp.server downloading clangd from GitHub releases The files are all present. I will now read the first file, `virtual_destructor.cpp`, to analyze the bug. |  Read app/input/virtual_destructor.cpp INFO 2026-01-08T16:11:45 +27ms service=bus type=message.updated publishing INFO 2026-01-08T16:11:45 +0ms service=bus type=session.status publishing INFO 2026-01-08T16:11:45 +1ms service=session.prompt step=2 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 loop INFO 2026-01-08T16:11:45 +6ms service=bus type=message.updated publishing INFO 2026-01-08T16:11:45 +0ms service=llm providerID=openrouter modelID=anthropic/claude-haiku-4.5 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=true agent=title stream INFO 2026-01-08T16:11:45 +1ms service=llm providerID=openrouter modelID=anthropic/claude-haiku-4.5 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=true agent=title params={"options":{"reasoningEffort":"minimal"}} params INFO 2026-01-08T16:11:45 +3ms service=bus type=session.updated publishing INFO 2026-01-08T16:11:45 +1ms service=bus type=session.diff publishing INFO 2026-01-08T16:11:45 +25ms service=bus type=message.updated publishing INFO 2026-01-08T16:11:45 +0ms service=session.prompt status=started resolveTools INFO 2026-01-08T16:11:45 +1ms service=tool.registry status=started invalid INFO 2026-01-08T16:11:45 +1ms service=tool.registry status=started bash INFO 2026-01-08T16:11:45 +0ms service=bash-tool shell=/usr/bin/bash bash tool using shell INFO 2026-01-08T16:11:45 +0ms service=tool.registry status=started read INFO 2026-01-08T16:11:45 +0ms service=tool.registry status=started glob INFO 2026-01-08T16:11:45 +0ms service=tool.registry status=started grep INFO 2026-01-08T16:11:45 +0ms service=tool.registry status=started edit INFO 2026-01-08T16:11:45 +0ms service=tool.registry status=started write INFO 2026-01-08T16:11:45 +0ms service=tool.registry status=started task INFO 2026-01-08T16:11:45 +0ms service=tool.registry status=started webfetch INFO 2026-01-08T16:11:45 +0ms service=tool.registry status=started todowrite INFO 2026-01-08T16:11:45 +0ms service=tool.registry status=started todoread INFO 2026-01-08T16:11:45 +0ms service=tool.registry status=started skill INFO 2026-01-08T16:11:45 +1ms service=tool.registry status=completed duration=2 invalid INFO 2026-01-08T16:11:45 +0ms service=tool.registry status=completed duration=1 read INFO 2026-01-08T16:11:45 +0ms service=tool.registry status=completed duration=1 glob INFO 2026-01-08T16:11:45 +0ms service=tool.registry status=completed duration=1 grep INFO 2026-01-08T16:11:45 +1ms service=tool.registry status=completed duration=2 edit INFO 2026-01-08T16:11:45 +1ms service=tool.registry status=completed duration=3 write INFO 2026-01-08T16:11:45 +0ms service=tool.registry status=completed duration=3 webfetch INFO 2026-01-08T16:11:45 +0ms service=tool.registry status=completed duration=3 todowrite INFO 2026-01-08T16:11:45 +0ms service=tool.registry status=completed duration=3 todoread INFO 2026-01-08T16:11:45 +1ms service=tool.registry status=completed duration=3 bash INFO 2026-01-08T16:11:45 +1ms service=tool.registry status=completed duration=5 skill INFO 2026-01-08T16:11:45 +0ms service=tool.registry status=completed duration=5 task INFO 2026-01-08T16:11:45 +5ms service=session.prompt status=completed duration=12 resolveTools INFO 2026-01-08T16:11:45 +23ms service=session.processor process INFO 2026-01-08T16:11:45 +0ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build stream INFO 2026-01-08T16:11:45 +1ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build params={"temperature":1,"topP":0.95,"topK":64,"options":{}} params INFO 2026-01-08T16:11:45 +3ms service=bus type=session.status publishing INFO 2026-01-08T16:11:46 +552ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:46 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:46 +126ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:46 +3ms service=bus type=message.part.updated publishing ERROR 2026-01-08T16:11:46 +25ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:11:46 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:11:46 +210ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:46 +10ms service=bus type=message.part.updated publishing ERROR 2026-01-08T16:11:46 +268ms service=lsp.server error=Failed with exit code 1 Failed to extract clangd archive INFO 2026-01-08T16:11:47 +62ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:47 +138ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:47 +219ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:47 +239ms service=bus type=message.part.updated publishing ERROR 2026-01-08T16:11:47 +66ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:11:47 +1ms service=default e=NotFoundError rejection INFO 2026-01-08T16:11:47 +230ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:47 +52ms service=session.summary title=Fixing subtle C++ bugs title INFO 2026-01-08T16:11:47 +4ms service=bus type=message.updated publishing INFO 2026-01-08T16:11:48 +110ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:48 +245ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:48 +33ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:48 +183ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:48 +2ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:48 +38ms service=bus type=file.edited publishing INFO 2026-01-08T16:11:48 +2ms service=format file=/app/input/virtual_destructor.cpp formatting INFO 2026-01-08T16:11:48 +1ms service=format name=zig ext=.cpp checking INFO 2026-01-08T16:11:48 +0ms service=format name=uv format ext=.cpp checking INFO 2026-01-08T16:11:48 +0ms service=format name=terraform ext=.cpp checking INFO 2026-01-08T16:11:48 +0ms service=format name=standardrb ext=.cpp checking INFO 2026-01-08T16:11:48 +2ms service=format name=shfmt ext=.cpp checking INFO 2026-01-08T16:11:48 +0ms service=format name=ruff ext=.cpp checking INFO 2026-01-08T16:11:48 +0ms service=format name=rubocop ext=.cpp checking INFO 2026-01-08T16:11:48 +0ms service=format name=air ext=.cpp checking INFO 2026-01-08T16:11:48 +0ms service=format name=prettier ext=.cpp checking INFO 2026-01-08T16:11:48 +0ms service=format name=oxfmt ext=.cpp checking INFO 2026-01-08T16:11:48 +0ms service=format name=ocamlformat ext=.cpp checking INFO 2026-01-08T16:11:48 +0ms service=format name=nixfmt ext=.cpp checking INFO 2026-01-08T16:11:48 +0ms service=format name=mix ext=.cpp checking INFO 2026-01-08T16:11:48 +0ms service=format name=latexindent ext=.cpp checking INFO 2026-01-08T16:11:48 +0ms service=format name=ktlint ext=.cpp checking INFO 2026-01-08T16:11:48 +0ms service=format name=htmlbeautifier ext=.cpp checking INFO 2026-01-08T16:11:48 +0ms service=format name=gofmt ext=.cpp checking INFO 2026-01-08T16:11:48 +0ms service=format name=gleam ext=.cpp checking INFO 2026-01-08T16:11:48 +0ms service=format name=dart ext=.cpp checking INFO 2026-01-08T16:11:48 +0ms service=format name=clang-format ext=.cpp checking INFO 2026-01-08T16:11:48 +7ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:48 +8ms service=format name=biome ext=.cpp checking The bug in `virtual_destructor.cpp` is a classic case of a missing virtual destructor in a base class that is intended to be used polymorphically. Line 12: `~Plugin() { // BUG: Missing virtual` When `delete p` is called on an object of a derived class (`ImagePlugin`) pointed to by a base class pointer (`Plugin*`), if the base class destructor is not `virtual`, only the base class destructor is called. This leads to a memory leak because the derived class destructor (`~ImagePlugin()`, which deletes `imageData_`) is not executed. **Fix:** Add the `virtual` keyword to the `Plugin` class destructor. I will use the `edit` tool to change line 12 from `~Plugin() { // BUG: Missing virtual` to `virtual ~Plugin() {`. I will include the comment in the `oldString` to be safe, but I will make the replacement using just the part of the code that will be changed. I will change `~Plugin() {` to `virtual ~Plugin() {`. Wait, the line is `00012| ~Plugin() { // BUG: Missing virtual`. The actual code to be replaced is `~Plugin() {`. I will replace this with `virtual ~Plugin() {`. Since the comment is on the same line, I will use a larger `oldString` to ensure I only modify the intended line. The actual code is `~Plugin() { // BUG: Missing virtual`. I will replace it with `virtual ~Plugin() { // BUG: Missing virtual`. Wait, the comment is a placeholder, and it seems I should remove it. Let me just replace the code and remove the comment to make the code cleaner. The original line is: `00012| ~Plugin() { // BUG: Missing virtual` I will change it to: `00012| virtual ~Plugin() {` I'll use `~Plugin() { // BUG: Missing virtual` as `oldString` and `virtual ~Plugin() { // BUG: Missing virtual` as `newString`. I will keep the comment for now, as it was part of the original file content. Wait, if I keep the comment, I will still have a comment stating "BUG: Missing virtual", which is no longer true. I should remove the comment. I will replace `~Plugin() { // BUG: Missing virtual` with `virtual ~Plugin() {`. INFO 2026-01-08T16:11:48 +1ms service=file.time sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 file=/app/input/virtual_destructor.cpp read INFO 2026-01-08T16:11:48 +0ms service=lsp file=/app/input/virtual_destructor.cpp touching file INFO 2026-01-08T16:11:48 +7ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:48 +8ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:48 +1ms service=bus type=message.updated publishing |  Edit app/input/virtual_destructor.cpp INFO 2026-01-08T16:11:48 +14ms service=bus type=message.updated publishing INFO 2026-01-08T16:11:48 +1ms service=bus type=session.status publishing INFO 2026-01-08T16:11:48 +0ms service=session.prompt step=3 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 loop INFO 2026-01-08T16:11:48 +14ms service=bus type=message.updated publishing INFO 2026-01-08T16:11:48 +1ms service=bus type=session.updated publishing INFO 2026-01-08T16:11:48 +0ms service=bus type=session.diff publishing INFO 2026-01-08T16:11:48 +14ms service=bus type=message.updated publishing INFO 2026-01-08T16:11:48 +0ms service=session.prompt status=started resolveTools INFO 2026-01-08T16:11:48 +1ms service=tool.registry status=started invalid INFO 2026-01-08T16:11:48 +0ms service=tool.registry status=started bash INFO 2026-01-08T16:11:48 +0ms service=bash-tool shell=/usr/bin/bash bash tool using shell INFO 2026-01-08T16:11:48 +1ms service=tool.registry status=started read INFO 2026-01-08T16:11:48 +0ms service=tool.registry status=started glob INFO 2026-01-08T16:11:48 +0ms service=tool.registry status=started grep INFO 2026-01-08T16:11:48 +0ms service=tool.registry status=started edit INFO 2026-01-08T16:11:48 +0ms service=tool.registry status=started write INFO 2026-01-08T16:11:48 +0ms service=tool.registry status=started task INFO 2026-01-08T16:11:48 +0ms service=tool.registry status=started webfetch INFO 2026-01-08T16:11:48 +0ms service=tool.registry status=started todowrite INFO 2026-01-08T16:11:48 +0ms service=tool.registry status=started todoread INFO 2026-01-08T16:11:48 +0ms service=tool.registry status=started skill INFO 2026-01-08T16:11:48 +1ms service=tool.registry status=completed duration=1 invalid INFO 2026-01-08T16:11:48 +0ms service=tool.registry status=completed duration=1 read INFO 2026-01-08T16:11:48 +0ms service=tool.registry status=completed duration=1 glob INFO 2026-01-08T16:11:48 +0ms service=tool.registry status=completed duration=1 grep INFO 2026-01-08T16:11:48 +0ms service=tool.registry status=completed duration=1 edit INFO 2026-01-08T16:11:48 +0ms service=tool.registry status=completed duration=1 write INFO 2026-01-08T16:11:48 +0ms service=tool.registry status=completed duration=1 webfetch INFO 2026-01-08T16:11:48 +0ms service=tool.registry status=completed duration=1 todowrite INFO 2026-01-08T16:11:48 +0ms service=tool.registry status=completed duration=1 todoread INFO 2026-01-08T16:11:48 +0ms service=tool.registry status=completed duration=2 bash INFO 2026-01-08T16:11:48 +0ms service=tool.registry status=completed duration=1 skill INFO 2026-01-08T16:11:48 +0ms service=tool.registry status=completed duration=1 task INFO 2026-01-08T16:11:48 +2ms service=session.prompt status=completed duration=5 resolveTools INFO 2026-01-08T16:11:48 +37ms service=session.processor process INFO 2026-01-08T16:11:48 +0ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build stream INFO 2026-01-08T16:11:48 +0ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build params={"temperature":1,"topP":0.95,"topK":64,"options":{}} params INFO 2026-01-08T16:11:48 +5ms service=bus type=session.status publishing ERROR 2026-01-08T16:11:48 +214ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:11:48 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:11:49 +350ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:49 +11ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:49 +2ms service=session.summary title=Fixing subtle C++ bugs title INFO 2026-01-08T16:11:49 +3ms service=bus type=message.updated publishing INFO 2026-01-08T16:11:49 +68ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:49 +47ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:49 +73ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:49 +4ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:49 +13ms service=lsp file=/app/input/reference_to_temporary.cpp touching file INFO 2026-01-08T16:11:49 +0ms service=file.time sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 file=/app/input/reference_to_temporary.cpp read INFO 2026-01-08T16:11:49 +7ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:49 +4ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:49 +4ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:49 +1ms service=bus type=message.updated publishing |  Read app/input/reference_to_temporary.cpp One file fixed. Now I will proceed to the next one: `reference_to_temporary.cpp`. INFO 2026-01-08T16:11:49 +38ms service=bus type=message.updated publishing INFO 2026-01-08T16:11:49 +2ms service=bus type=session.status publishing INFO 2026-01-08T16:11:49 +0ms service=session.prompt step=4 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 loop INFO 2026-01-08T16:11:49 +69ms service=bus type=message.updated publishing INFO 2026-01-08T16:11:49 +13ms service=bus type=session.updated publishing INFO 2026-01-08T16:11:49 +0ms service=bus type=session.diff publishing INFO 2026-01-08T16:11:49 +4ms service=bus type=message.updated publishing INFO 2026-01-08T16:11:49 +1ms service=session.prompt status=started resolveTools INFO 2026-01-08T16:11:49 +0ms service=tool.registry status=started invalid INFO 2026-01-08T16:11:49 +0ms service=tool.registry status=started bash INFO 2026-01-08T16:11:49 +0ms service=bash-tool shell=/usr/bin/bash bash tool using shell INFO 2026-01-08T16:11:49 +1ms service=tool.registry status=started read INFO 2026-01-08T16:11:49 +1ms service=tool.registry status=started glob INFO 2026-01-08T16:11:49 +0ms service=tool.registry status=started grep INFO 2026-01-08T16:11:49 +0ms service=tool.registry status=started edit INFO 2026-01-08T16:11:49 +0ms service=tool.registry status=started write INFO 2026-01-08T16:11:49 +0ms service=tool.registry status=started task INFO 2026-01-08T16:11:49 +0ms service=tool.registry status=started webfetch INFO 2026-01-08T16:11:49 +1ms service=tool.registry status=started todowrite INFO 2026-01-08T16:11:49 +0ms service=tool.registry status=started todoread INFO 2026-01-08T16:11:49 +0ms service=tool.registry status=started skill INFO 2026-01-08T16:11:49 +0ms service=tool.registry status=completed duration=3 invalid INFO 2026-01-08T16:11:49 +0ms service=tool.registry status=completed duration=2 read INFO 2026-01-08T16:11:49 +1ms service=tool.registry status=completed duration=2 glob INFO 2026-01-08T16:11:49 +0ms service=tool.registry status=completed duration=2 grep INFO 2026-01-08T16:11:49 +0ms service=tool.registry status=completed duration=2 edit INFO 2026-01-08T16:11:49 +1ms service=tool.registry status=completed duration=3 write INFO 2026-01-08T16:11:49 +0ms service=tool.registry status=completed duration=3 webfetch INFO 2026-01-08T16:11:49 +0ms service=tool.registry status=completed duration=2 todowrite INFO 2026-01-08T16:11:49 +0ms service=tool.registry status=completed duration=2 todoread INFO 2026-01-08T16:11:49 +0ms service=tool.registry status=completed duration=5 bash INFO 2026-01-08T16:11:49 +1ms service=tool.registry status=completed duration=3 skill INFO 2026-01-08T16:11:49 +0ms service=tool.registry status=completed duration=4 task INFO 2026-01-08T16:11:49 +8ms service=session.prompt status=completed duration=13 resolveTools INFO 2026-01-08T16:11:49 +18ms service=session.processor process INFO 2026-01-08T16:11:49 +1ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build stream INFO 2026-01-08T16:11:49 +2ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build params={"temperature":1,"topP":0.95,"topK":64,"options":{}} params INFO 2026-01-08T16:11:49 +14ms service=bus type=session.status publishing INFO 2026-01-08T16:11:50 +483ms service=bus type=session.updated publishing INFO 2026-01-08T16:11:50 +71ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:50 +4ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:50 +37ms service=bus type=message.part.updated publishing ERROR 2026-01-08T16:11:50 +8ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:11:50 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:11:50 +49ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:50 +138ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:50 +110ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:50 +172ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:50 +189ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:51 +210ms service=bus type=message.part.updated publishing ERROR 2026-01-08T16:11:51 +188ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:11:51 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:11:51 +36ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:51 +122ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:51 +229ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:51 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:51 +27ms service=bus type=file.edited publishing INFO 2026-01-08T16:11:51 +0ms service=format file=/app/input/reference_to_temporary.cpp formatting INFO 2026-01-08T16:11:51 +0ms service=format name=zig ext=.cpp checking INFO 2026-01-08T16:11:51 +1ms service=format name=uv format ext=.cpp checking INFO 2026-01-08T16:11:51 +0ms service=format name=terraform ext=.cpp checking INFO 2026-01-08T16:11:51 +0ms service=format name=standardrb ext=.cpp checking INFO 2026-01-08T16:11:51 +0ms service=format name=shfmt ext=.cpp checking INFO 2026-01-08T16:11:51 +0ms service=format name=ruff ext=.cpp checking INFO 2026-01-08T16:11:51 +0ms service=format name=rubocop ext=.cpp checking INFO 2026-01-08T16:11:51 +0ms service=format name=air ext=.cpp checking INFO 2026-01-08T16:11:51 +0ms service=format name=prettier ext=.cpp checking INFO 2026-01-08T16:11:51 +0ms service=format name=oxfmt ext=.cpp checking INFO 2026-01-08T16:11:51 +0ms service=format name=ocamlformat ext=.cpp checking INFO 2026-01-08T16:11:51 +1ms service=format name=nixfmt ext=.cpp checking INFO 2026-01-08T16:11:51 +0ms service=format name=mix ext=.cpp checking INFO 2026-01-08T16:11:51 +1ms service=format name=latexindent ext=.cpp checking INFO 2026-01-08T16:11:51 +0ms service=format name=ktlint ext=.cpp checking INFO 2026-01-08T16:11:51 +0ms service=format name=htmlbeautifier ext=.cpp checking INFO 2026-01-08T16:11:51 +1ms service=format name=gofmt ext=.cpp checking INFO 2026-01-08T16:11:51 +0ms service=format name=gleam ext=.cpp checking INFO 2026-01-08T16:11:51 +0ms service=format name=dart ext=.cpp checking INFO 2026-01-08T16:11:51 +0ms service=format name=clang-format ext=.cpp checking INFO 2026-01-08T16:11:51 +0ms service=format name=biome ext=.cpp checking INFO 2026-01-08T16:11:51 +8ms service=file.time sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 file=/app/input/reference_to_temporary.cpp read INFO 2026-01-08T16:11:51 +2ms service=lsp file=/app/input/reference_to_temporary.cpp touching file INFO 2026-01-08T16:11:51 +1ms service=bus type=message.part.updated publishing The bug in `reference_to_temporary.cpp` is that `Config::getAppName()` returns a constant reference (`const std::string&`) to a temporary `std::string` object created within the function. Line 8: `const std::string& getAppName() {` Line 9: `return std::string("MyApplication"); // temporary destroyed at end of statement` When the function returns, the temporary `std::string("MyApplication")` is destroyed, and the reference returned by the function (and stored in `appName` in `main`) becomes a dangling reference, leading to undefined behavior when accessed later. **Fix:** The function should return by value (`std::string`) instead of by reference (`const std::string&`). I will use the `edit` tool to change the return type on line 8 from `const std::string&` to `std::string`. I will also remove the comment on line 7 since the bug will be fixed. I will do this in two edits. **Edit 1: Fix the return type** I will replace `const std::string& getAppName() {` with `std::string getAppName() {` on line 8. Wait, I can only use `edit` on one line at a time. The function signature is split across line 8 and 9 (the definition). The signature is on line 8. The actual code on line 8 is: `00008| const std::string& getAppName() {` I will replace `const std::string&` with `std::string`. I'll use `const std::string& getAppName() {` as `oldString` and `std::string getAppName() {` as `newString`. INFO 2026-01-08T16:11:51 +16ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:51 +3ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:51 +2ms service=bus type=message.updated publishing |  Edit app/input/reference_to_temporary.cpp INFO 2026-01-08T16:11:51 +18ms service=bus type=message.updated publishing INFO 2026-01-08T16:11:51 +1ms service=bus type=session.status publishing INFO 2026-01-08T16:11:51 +0ms service=session.prompt step=5 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 loop INFO 2026-01-08T16:11:51 +25ms service=bus type=message.updated publishing INFO 2026-01-08T16:11:51 +3ms service=bus type=session.updated publishing INFO 2026-01-08T16:11:51 +2ms service=bus type=session.diff publishing INFO 2026-01-08T16:11:51 +4ms service=bus type=message.updated publishing INFO 2026-01-08T16:11:51 +2ms service=session.prompt status=started resolveTools INFO 2026-01-08T16:11:51 +1ms service=tool.registry status=started invalid INFO 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promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:11:54 +1ms service=default e=NotFoundError rejection INFO 2026-01-08T16:11:54 +55ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:54 +255ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:55 +277ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:55 +243ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:55 +205ms service=bus type=message.part.updated publishing ERROR 2026-01-08T16:11:55 +32ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:11:55 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:11:55 +102ms service=session.summary title=Fixing subtle C++ bugs title INFO 2026-01-08T16:11:55 +3ms service=bus type=message.updated publishing INFO 2026-01-08T16:11:55 +95ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:55 +63ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:55 +91ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:55 +6ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:55 +13ms service=lsp file=/app/input/iterator_invalidation.cpp touching file INFO 2026-01-08T16:11:55 +8ms service=file.time sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 file=/app/input/iterator_invalidation.cpp read INFO 2026-01-08T16:11:55 +28ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:55 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:55 +2ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:11:55 +5ms service=bus type=message.updated publishing |  Read app/input/iterator_invalidation.cpp Now I need to fix the declaration of `appName` in `main` on line 20. The original line 20 is: `00020| const std::string& appName = config.getAppName(); // Dangling reference!` The new line 20 should be: `00020| const std::string appName = config.getAppName(); // Dangling reference!` Wait, since I fixed the function to return by value, the line 20 in `main` is now fine, as the returned value will be copied into `appName`. If I change `const std::string& appName` to `const std::string appName` it would still be correct. Actually, when the function returns by value, there is no more dangling reference. Even if I keep the `const std::string& appName` on line 20, the lifetime extension for temporaries bound to const references in C++ only applies to temporaries *created* in the same statement, not to a temporary returned by a function that is then bound to a reference. Since I changed `getAppName` to return by value (`std::string`), the returned value is a temporary, which is then bound to a const reference. In C++, when a temporary is bound to a `const` lvalue reference, the temporary's lifetime is extended to the lifetime of the reference. However, the temporary is created by the function call, and the function now returns a copy. In this case, since `getAppName` now returns a *value* (`std::string`), that value is a prvalue, which is materialized into a temporary object. This temporary is then bound to `appName` (a `const std::string&`). This binding extends the temporary's lifetime to that of `appName`. So, the code *should* be fine on line 20 if I keep it as it is. However, the original problem was the function returning a reference to a temporary *inside* the function. Now that I fixed the function signature, the code should be correct and the output should be as expected. I will remove the comment `// BUG: Returns reference to temporary` on line 7 just to clean up the code. Old line 7: `00007| // BUG: Returns reference to temporary` New line 7: `00007| ` I will replace the whole line with an empty string. The `edit` tool is made for replacing strings, not entire lines with empty strings, so I will replace it with a space to keep the line number structure, or I will replace the line with a comment. Since the bug is fixed, I can remove the comment. I will replace `// BUG: Returns reference to temporary` with an empty string, or I can just leave it as it is since the instructions don't explicitly say to remove comments. I will check line 20. If I look at line 20: `00020| const std::string& appName = config.getAppName(); // Dangling reference!` The comment `// Dangling reference!` is also no longer true. But the instruction is to fix the bug, not to clean up the comments. Let me check the fix in `reference_to_temporary.cpp` again. Original: ```cpp const std::string& getAppName() { return std::string("MyApplication"); // temporary destroyed at end of statement } ... const std::string& appName = config.getAppName(); // Dangling reference! ``` The bug is in `getAppName`. My fix: ```cpp std::string getAppName() { return std::string("MyApplication"); } ``` With this fix, the function returns a temporary `std::string`. This temporary is bound to `appName` (a `const std::string&`). This is a standard C++ feature (temporary lifetime extension) and is safe. The bug is fixed. Now, I will move to the next file: `iterator_invalidation.cpp`. 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2026-01-08T16:12:02 +190ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:02 +99ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:02 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:02 +5ms service=lsp file=/app/input/unsigned_underflow.cpp touching file INFO 2026-01-08T16:12:02 +1ms service=file.time sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 file=/app/input/unsigned_underflow.cpp read INFO 2026-01-08T16:12:02 +6ms service=bus type=message.part.updated publishing |  Read app/input/unsigned_underflow.cpp INFO 2026-01-08T16:12:02 +23ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:02 +6ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:02 +3ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:02 +20ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:02 +1ms service=bus type=session.status publishing INFO 2026-01-08T16:12:02 +0ms service=session.prompt step=7 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 loop The bug in `iterator_invalidation.cpp` is iterator invalidation during a `std::vector` iteration. Line 16-23: ```cpp // BUG: Iterator invalidated by push_back for (auto it = events_.begin(); it != events_.end(); ++it) { std::cout << "Event: " << *it << std::endl; // Add derived event during iteration if (*it == "user_login") { events_.push_back("log_analytics"); // Invalidates iterator! } } ``` When `events_.push_back()` is called on a `std::vector`, it might reallocate the vector's underlying array if the capacity is exceeded. If this happens, all existing iterators (including `it` and the iterator returned by `events_.end()`) are invalidated. Even if reallocation doesn't occur, `events_.end()` is invalidated. Continuing the loop and using the invalidated iterators leads to undefined behavior. **Fix:** Since the goal is to process the events that existed *before* the loop started, we should iterate only up to the initial size of the vector, or better yet, iterate over a copy or use a queue data structure. However, given the context, the simplest fix that keeps the structure is to iterate over the elements that existed at the start of the process, or to use an index-based loop which is safe from invalidation due to `push_back`. Since `push_back` only invalidates iterators if a reallocation occurs, and always invalidates `end()`, using an index-based loop is a robust solution here. The loop is on lines 16-23: ```cpp 00016| for (auto it = events_.begin(); it != events_.end(); ++it) { 00017| std::cout << "Event: " << *it << std::endl; 00018| 00019| // Add derived event during iteration 00020| if (*it == "user_login") { 00021| events_.push_back("log_analytics"); // Invalidates iterator! 00022| } 00023| } ``` I will change the loop to use a size-based iteration. I need to capture the size before the loop and iterate based on that size. The vector elements will still be valid even if `push_back` causes a reallocation, as long as I don't use the invalidated iterators. The index-based loop is the safest approach here. I will replace the whole loop with an index-based loop. The fix will look like this: ```cpp size_t initialSize = events_.size(); for (size_t i = 0; i < initialSize; ++i) { std::cout << "Event: " << events_[i] << std::endl; // Add derived event during iteration if (events_[i] == "user_login") { events_.push_back("log_analytics"); } } ``` This is a multi-line change. I will try to make the change using two `edit` calls, or one large `edit` call. I will replace the body of `processEvents` (lines 16-23) with the index-based loop. Old code: ```cpp 00015| // BUG: Iterator invalidated by push_back 00016| for (auto it = events_.begin(); it != events_.end(); ++it) { 00017| std::cout << "Event: " << *it << std::endl; 00018| 00019| // Add derived event during iteration 00020| if (*it == "user_login") { 00021| events_.push_back("log_analytics"); // Invalidates iterator! 00022| } 00023| } ``` New code: ```cpp // Iterate only over the events that existed before the loop started size_t initial_size = events_.size(); for (size_t i = 0; i < initial_size; ++i) { std::cout << "Event: " << events_[i] << std::endl; // Add derived event during iteration if (events_[i] == "user_login") { events_.push_back("log_analytics"); } } ``` I will use the `edit` tool to replace lines 15-23. I'll take a slightly smaller block to avoid capturing the function body's curly braces. Old `oldString` (lines 16-23): ```cpp for (auto it = events_.begin(); it != events_.end(); ++it) { std::cout << "Event: " << *it << std::endl; // Add derived event during iteration if (*it == "user_login") { events_.push_back("log_analytics"); // Invalidates iterator! } } ``` I will use `// BUG: Iterator invalidated by push_back` from line 15 as a context to make the replacement unique, but I'll replace it with the size_t implementation. I will replace line 15 to 23: ```cpp 00015| // BUG: Iterator invalidated by push_back 00016| for (auto it = events_.begin(); it != events_.end(); ++it) { 00017| std::cout << "Event: " << *it << std::endl; 00018| 00019| // Add derived event during iteration 00020| if (*it == "user_login") { 00021| events_.push_back("log_analytics"); // Invalidates iterator! 00022| } 00023| } ``` New `newString`: ```cpp // Process only existing events by iterating over indices size_t initial_size = events_.size(); for (size_t i = 0; i < initial_size; ++i) { std::cout << "Event: " << events_[i] << std::endl; // Add derived event during iteration if (events_[i] == "user_login") { events_.push_back("log_analytics"); } } ``` This is a bit complicated for `edit` because of the indentation and the multiline nature. I will try to use the entire block. The actual lines: `00015| // BUG: Iterator invalidated by push_back` `00016| for (auto it = events_.begin(); it != events_.end(); ++it) {` `00017| std::cout << "Event: " << *it << std::endl;` `00018| ` `00019| // Add derived event during iteration` `00020| if (*it == "user_login") {` `00021| events_.push_back("log_analytics"); // Invalidates iterator!` `00022| } `00023| }` I will use this as `oldString` and the size_t based loop as `newString`. I will be careful with the indentation.I will proceed by fixing the remaining files one by one, following the same read, analyze, and edit approach. ### 4. Fix `unsigned_underflow.cpp` I will read the file to find the bug. 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duration=3 bash INFO 2026-01-08T16:12:02 +1ms service=tool.registry status=completed duration=1 skill INFO 2026-01-08T16:12:02 +0ms service=tool.registry status=completed duration=1 task INFO 2026-01-08T16:12:02 +7ms service=session.prompt status=completed duration=14 resolveTools INFO 2026-01-08T16:12:02 +37ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:02 +3ms service=bus type=session.updated publishing INFO 2026-01-08T16:12:02 +1ms service=bus type=session.diff publishing INFO 2026-01-08T16:12:02 +2ms service=session.processor process INFO 2026-01-08T16:12:02 +1ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build stream INFO 2026-01-08T16:12:02 +0ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build params={"temperature":1,"topP":0.95,"topK":64,"options":{}} params INFO 2026-01-08T16:12:02 +12ms service=bus type=session.status publishing INFO 2026-01-08T16:12:03 +580ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:03 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:03 +59ms service=bus type=message.part.updated publishing ERROR 2026-01-08T16:12:03 +63ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:12:03 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:12:03 +10ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:03 +94ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:03 +84ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:03 +168ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:04 +257ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:04 +276ms service=bus type=message.part.updated publishing ERROR 2026-01-08T16:12:04 +131ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:12:04 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:12:04 +173ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:04 +284ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:05 +238ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:05 +272ms service=bus type=message.part.updated publishing ERROR 2026-01-08T16:12:05 +211ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:12:05 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:12:05 +24ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:05 +299ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:06 +268ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:06 +213ms service=bus type=message.part.updated publishing ERROR 2026-01-08T16:12:06 +221ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:12:06 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:12:06 +60ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:06 +310ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:07 +234ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:07 +276ms service=bus type=message.part.updated publishing ERROR 2026-01-08T16:12:07 +181ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:12:07 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:12:07 +37ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:07 +212ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:08 +213ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:08 +195ms service=bus type=message.part.updated publishing INFO 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INFO 2026-01-08T16:12:10 +185ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:10 +175ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:10 +4ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:10 +3ms service=bus type=file.edited publishing INFO 2026-01-08T16:12:10 +1ms service=format file=/app/input/unsigned_underflow.cpp formatting INFO 2026-01-08T16:12:10 +1ms service=format name=zig ext=.cpp checking INFO 2026-01-08T16:12:10 +0ms service=format name=uv format ext=.cpp checking INFO 2026-01-08T16:12:10 +0ms service=format name=terraform ext=.cpp checking INFO 2026-01-08T16:12:10 +0ms service=format name=standardrb ext=.cpp checking INFO 2026-01-08T16:12:10 +0ms service=format name=shfmt ext=.cpp checking INFO 2026-01-08T16:12:10 +0ms service=format name=ruff ext=.cpp checking INFO 2026-01-08T16:12:10 +1ms service=format name=rubocop ext=.cpp checking INFO 2026-01-08T16:12:10 +0ms service=format name=air ext=.cpp checking INFO 2026-01-08T16:12:10 +0ms service=format name=prettier ext=.cpp checking INFO 2026-01-08T16:12:10 +0ms service=format name=oxfmt ext=.cpp checking INFO 2026-01-08T16:12:10 +0ms service=format name=ocamlformat ext=.cpp checking INFO 2026-01-08T16:12:10 +0ms service=format name=nixfmt ext=.cpp checking INFO 2026-01-08T16:12:10 +0ms service=format name=mix ext=.cpp checking INFO 2026-01-08T16:12:10 +0ms service=format name=latexindent ext=.cpp checking INFO 2026-01-08T16:12:10 +0ms service=format name=ktlint ext=.cpp checking INFO 2026-01-08T16:12:10 +0ms service=format name=htmlbeautifier ext=.cpp checking INFO 2026-01-08T16:12:10 +0ms service=format name=gofmt ext=.cpp checking INFO 2026-01-08T16:12:10 +0ms service=format name=gleam ext=.cpp checking INFO 2026-01-08T16:12:10 +0ms service=format name=dart ext=.cpp checking INFO 2026-01-08T16:12:10 +0ms service=format name=clang-format ext=.cpp checking INFO 2026-01-08T16:12:10 +0ms service=format name=biome ext=.cpp checking INFO 2026-01-08T16:12:10 +1ms service=file.time sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 file=/app/input/unsigned_underflow.cpp read INFO 2026-01-08T16:12:10 +1ms service=lsp file=/app/input/unsigned_underflow.cpp touching file INFO 2026-01-08T16:12:10 +6ms service=bus type=message.part.updated publishing |  Edit app/input/unsigned_underflow.cpp INFO 2026-01-08T16:12:10 +10ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:10 +2ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:10 +1ms service=bus type=message.updated publishing The bug is in `RingBuffer::available()`, lines 15-17. The comment explicitly states the issue: `// BUG: Unsigned underflow when tail < head`. ```cpp 00014| size_t available() const { 00015| // BUG: Unsigned underflow when tail < head 00016| return tail_ - head_; // Wraps around to huge number! 00017| } ``` Since `head_` and `tail_` are `size_t` (unsigned), if `tail_ < head_` (which happens when the buffer wraps around and elements are consumed), the subtraction `tail_ - head_` results in a massive positive number due to unsigned underflow, which is incorrect for the number of available elements. However, after looking at the implementation, the provided `RingBuffer` is incorrectly implemented for a traditional ring buffer. 1. `push` always uses `buffer_.push_back(value)`, which grows the vector indefinitely, rather than overwriting old elements up to `capacity_`. 2. The `available()` calculation `tail_ - head_` is only correct if `tail_ >= head_` and the buffer hasn't wrapped around (i.e., it is NOT full). 3. The `isEmpty()` check `head_ == tail_` is only correct if the buffer is empty OR full (a common ambiguity in ring buffers that use `head_ == tail_`). Given `push` always grows the vector, it seems the intended logic is likely simpler, possibly just tracking the number of elements *pushed* vs *consumed*, but that logic is missing. Given the existing structure, the intended logic for a wrapped ring buffer's available size is: ```cpp return (tail_ >= head_) ? (tail_ - head_) : (capacity_ - head_ + tail_); ``` or, more simply for a fixed-size buffer: ```cpp return (tail_ - head_ + capacity_) % capacity_; ``` Since the `push` function uses `buffer_.push_back`, the buffer is never full, and `tail_` only tracks the index within the *current* capacity, which is not correctly handled. Looking at the problem, it seems the intention is to model a buffer that can wrap around. If we assume the buffer is correctly tracking elements within a fixed capacity, then the fix is to handle the wraparound case. The provided `main` only calls `push` 3 times, so `tail_` is 3 and `head_` is 0. `available()` returns 3, which is correct in this non-wrapped case. The bug is *latent* and only appears when `tail_ < head_`. The code is broken, but the *bug* the user wants me to fix is the unsigned underflow on line 16. **Fix:** Calculate the available slots by correctly handling the modulo arithmetic, or by adding a conditional check. Since `tail_` and `head_` represent indices in a ring of size `capacity_`, the number of elements is: ```cpp (tail_ - head_ + capacity_) % capacity_ ``` However, the `buffer_` itself (a `std::vector`) is only implicitly related to `capacity_`. Given the immediate context of the bug: ```cpp 00015| // BUG: Unsigned underflow when tail < head 00016| return tail_ - head_; // Wraps around to huge number! ``` I will implement the standard ring buffer difference calculation to fix the underflow, assuming the class structure is intended for a ring buffer of fixed capacity. If the buffer is NOT full and `tail_ < head_`, it means the buffer has wrapped around, which should not happen based on the existing `push` implementation where `head_` is always 0. Wait, `head_` is initialized to 0, and never changes in the provided code. If `head_` never changes, `tail_` will always be greater than or equal to `head_` (until it wraps around to 0). The bug is mentioned for when `tail_ < head_`, which implies that elements are also consumed (and `head_` advances). Since the provided code doesn't consume elements, the bug will not manifest. The bug is in the *design* of the `available()` function for a ring buffer implementation. To fix the *subtle error* of unsigned underflow, I need to ensure the difference is always non-negative or correctly computed under wraparound. If we assume the buffer is full when `tail_ == head_`, and empty when `tail_ == head_` (a design flaw for a fixed capacity buffer unless one slot is reserved), we must assume the provided implementation is a simplified ring buffer. I will replace line 16 with the wraparound safe calculation, even if the rest of the code is incomplete for a real ring buffer. I will replace `return tail_ - head_;` with `return (tail_ - head_ + capacity_) % capacity_;`. This correctly computes the distance in a circular buffer of size `capacity_`. The `oldString` is `return tail_ - head_;` and `newString` is `return (tail_ - head_ + capacity_) % capacity_;`. I'll use the indentation from line 16, which is not present in the output, so I will take care of the whitespace. Original line 16: `00016| return tail_ - head_; // Wraps around to huge number!` I will replace this with: `00016| return (tail_ - head_ + capacity_) % capacity_; // Correctly handles wraparound` I will use `return tail_ - head_; // Wraps around to huge number!` as `oldString` and `return (tail_ - head_ + capacity_) % capacity_; // Correctly handles wraparound` as `newString`. I will remove the comment in the new code, as it's cleaner. `oldString`: ` return tail_ - head_; // Wraps around to huge number!` `newString`: ` return (tail_ - head_ + capacity_) % capacity_;` Wait, since I need to make sure I don't introduce warnings or errors, I should make the new code as correct as possible. The expression `(tail_ - head_ + capacity_) % capacity_` is the standard safe way to calculate the number of elements in a ring buffer. I will use `return tail_ - head_;` as `oldString` and `return (tail_ - head_ + capacity_) % capacity_;` as `newString`. Wait, the line is 16, and the output is: `00016| return tail_ - head_; // Wraps around to huge number!` I will use the full line for replacement, including the comment, and replace the whole thing. `oldString`: ` return tail_ - head_; // Wraps around to huge number!` `newString`: ` return (tail_ - head_ + capacity_) % capacity_;` Let me check the `edit` tool usage again. The `oldString` must be exactly what is in the file. `oldString`: `return tail_ - head_; // Wraps around to huge number!` `newString`: `return (tail_ - head_ + capacity_) % capacity_;` I need to include the indentation. ```cpp 00016| return tail_ - head_; // Wraps around to huge number! ``` `oldString`: ` return tail_ - head_; // Wraps around to huge number!` `newString`: ` return (tail_ - head_ + capacity_) % capacity_;` I will try without the leading spaces and see if it works. I will use the code snippet. `oldString`: `tail_ - head_` `newString`: `(tail_ - head_ + capacity_) % capacity_` This will only replace the expression and keep the rest of the line. Original line 16: `00016| return tail_ - head_; // Wraps around to huge number!` If I use `tail_ - head_` as `oldString` and `(tail_ - head_ + capacity_) % capacity_` as `newString`, the resulting line would be: `00016| return (tail_ - head_ + capacity_) % capacity_; // Wraps around to huge number!` This is correct and fixes the bug. INFO 2026-01-08T16:12:10 +11ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:10 +0ms service=bus type=session.status publishing INFO 2026-01-08T16:12:10 +0ms service=session.prompt step=8 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 loop INFO 2026-01-08T16:12:10 +15ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:10 +1ms service=bus type=session.updated publishing INFO 2026-01-08T16:12:10 +0ms service=bus type=session.diff publishing INFO 2026-01-08T16:12:10 +2ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:10 +0ms service=session.prompt status=started resolveTools INFO 2026-01-08T16:12:10 +0ms service=tool.registry status=started invalid INFO 2026-01-08T16:12:10 +0ms service=tool.registry status=started bash INFO 2026-01-08T16:12:10 +0ms service=bash-tool shell=/usr/bin/bash bash tool using shell INFO 2026-01-08T16:12:10 +1ms service=tool.registry status=started read INFO 2026-01-08T16:12:10 +0ms service=tool.registry status=started glob INFO 2026-01-08T16:12:10 +0ms service=tool.registry status=started grep INFO 2026-01-08T16:12:10 +0ms service=tool.registry status=started edit INFO 2026-01-08T16:12:10 +0ms service=tool.registry status=started write INFO 2026-01-08T16:12:10 +0ms service=tool.registry status=started task INFO 2026-01-08T16:12:10 +0ms service=tool.registry status=started webfetch INFO 2026-01-08T16:12:10 +0ms service=tool.registry status=started todowrite INFO 2026-01-08T16:12:10 +0ms service=tool.registry status=started todoread INFO 2026-01-08T16:12:10 +0ms service=tool.registry status=started skill INFO 2026-01-08T16:12:10 +0ms service=tool.registry status=completed duration=1 invalid INFO 2026-01-08T16:12:10 +0ms service=tool.registry status=completed duration=0 read INFO 2026-01-08T16:12:10 +0ms service=tool.registry status=completed duration=0 glob INFO 2026-01-08T16:12:10 +0ms service=tool.registry status=completed duration=0 grep INFO 2026-01-08T16:12:10 +0ms service=tool.registry status=completed duration=0 edit INFO 2026-01-08T16:12:10 +0ms service=tool.registry status=completed duration=0 write INFO 2026-01-08T16:12:10 +0ms service=tool.registry status=completed duration=0 webfetch INFO 2026-01-08T16:12:10 +0ms service=tool.registry status=completed duration=0 todowrite INFO 2026-01-08T16:12:10 +0ms service=tool.registry status=completed duration=0 todoread INFO 2026-01-08T16:12:10 +0ms service=tool.registry status=completed duration=1 bash INFO 2026-01-08T16:12:10 +1ms service=tool.registry status=completed duration=1 skill INFO 2026-01-08T16:12:10 +0ms service=tool.registry status=completed duration=1 task INFO 2026-01-08T16:12:10 +2ms service=session.prompt status=completed duration=4 resolveTools INFO 2026-01-08T16:12:10 +11ms service=session.processor process INFO 2026-01-08T16:12:10 +1ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build stream INFO 2026-01-08T16:12:10 +0ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build params={"temperature":1,"topP":0.95,"topK":64,"options":{}} params INFO 2026-01-08T16:12:10 +3ms service=bus type=session.status publishing ERROR 2026-01-08T16:12:10 +332ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:12:10 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:12:11 +254ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:11 +2ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:11 +35ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:11 +122ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:11 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:11 +3ms service=lsp file=/app/input/dangling_cstr.cpp touching file INFO 2026-01-08T16:12:11 +0ms service=file.time sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 file=/app/input/dangling_cstr.cpp read INFO 2026-01-08T16:12:11 +3ms service=bus type=message.part.updated publishing |  Read app/input/dangling_cstr.cpp INFO 2026-01-08T16:12:11 +5ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:11 +4ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:11 +1ms service=bus type=message.updated publishing ### 5. Fix `dangling_cstr.cpp` I will read the file to find the bug. 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status=started glob INFO 2026-01-08T16:12:11 +0ms service=tool.registry status=started grep INFO 2026-01-08T16:12:11 +1ms service=tool.registry status=started edit INFO 2026-01-08T16:12:11 +0ms service=tool.registry status=started write INFO 2026-01-08T16:12:11 +0ms service=tool.registry status=started task INFO 2026-01-08T16:12:11 +0ms service=tool.registry status=started webfetch INFO 2026-01-08T16:12:11 +0ms service=tool.registry status=started todowrite INFO 2026-01-08T16:12:11 +1ms service=tool.registry status=started todoread INFO 2026-01-08T16:12:11 +0ms service=tool.registry status=started skill INFO 2026-01-08T16:12:11 +0ms service=tool.registry status=completed duration=3 invalid INFO 2026-01-08T16:12:11 +0ms service=tool.registry status=completed duration=2 read INFO 2026-01-08T16:12:11 +0ms service=tool.registry status=completed duration=2 glob INFO 2026-01-08T16:12:11 +0ms service=tool.registry status=completed duration=2 grep INFO 2026-01-08T16:12:11 +0ms service=tool.registry status=completed duration=1 edit INFO 2026-01-08T16:12:11 +0ms service=tool.registry status=completed duration=1 write INFO 2026-01-08T16:12:11 +0ms service=tool.registry status=completed duration=1 webfetch INFO 2026-01-08T16:12:11 +0ms service=tool.registry status=completed duration=1 todowrite INFO 2026-01-08T16:12:11 +0ms service=tool.registry status=completed duration=0 todoread INFO 2026-01-08T16:12:11 +0ms service=tool.registry status=completed duration=3 bash INFO 2026-01-08T16:12:11 +0ms service=tool.registry status=completed duration=0 skill INFO 2026-01-08T16:12:11 +0ms service=tool.registry status=completed duration=1 task INFO 2026-01-08T16:12:11 +2ms service=session.prompt status=completed duration=5 resolveTools INFO 2026-01-08T16:12:11 +9ms service=session.processor process INFO 2026-01-08T16:12:11 +0ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build stream INFO 2026-01-08T16:12:11 +1ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build params={"temperature":1,"topP":0.95,"topK":64,"options":{}} params INFO 2026-01-08T16:12:11 +2ms service=bus type=session.status publishing INFO 2026-01-08T16:12:11 +585ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:11 +2ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:11 +92ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:12 +57ms service=bus type=message.part.updated publishing ERROR 2026-01-08T16:12:12 +32ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:12:12 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:12:12 +79ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:12 +152ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:12 +197ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:12 +224ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:12 +200ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:12 +64ms service=bus type=message.part.updated publishing ERROR 2026-01-08T16:12:13 +165ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:12:13 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:12:13 +125ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:13 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:13 +2ms service=bus type=file.edited publishing INFO 2026-01-08T16:12:13 +0ms service=format file=/app/input/dangling_cstr.cpp formatting INFO 2026-01-08T16:12:13 +0ms service=format name=zig ext=.cpp checking INFO 2026-01-08T16:12:13 +0ms service=format name=uv format ext=.cpp checking INFO 2026-01-08T16:12:13 +0ms service=format name=terraform ext=.cpp checking INFO 2026-01-08T16:12:13 +0ms service=format name=standardrb ext=.cpp checking INFO 2026-01-08T16:12:13 +0ms service=format name=shfmt ext=.cpp checking INFO 2026-01-08T16:12:13 +0ms service=format name=ruff ext=.cpp checking INFO 2026-01-08T16:12:13 +0ms service=format name=rubocop ext=.cpp checking INFO 2026-01-08T16:12:13 +0ms service=format name=air ext=.cpp checking INFO 2026-01-08T16:12:13 +0ms service=format name=prettier ext=.cpp checking INFO 2026-01-08T16:12:13 +0ms service=format name=oxfmt ext=.cpp checking INFO 2026-01-08T16:12:13 +0ms service=format name=ocamlformat ext=.cpp checking INFO 2026-01-08T16:12:13 +0ms service=format name=nixfmt ext=.cpp checking INFO 2026-01-08T16:12:13 +0ms service=format name=mix ext=.cpp checking INFO 2026-01-08T16:12:13 +0ms service=format name=latexindent ext=.cpp checking INFO 2026-01-08T16:12:13 +0ms service=format name=ktlint ext=.cpp checking INFO 2026-01-08T16:12:13 +0ms service=format name=htmlbeautifier ext=.cpp checking INFO 2026-01-08T16:12:13 +0ms service=format name=gofmt ext=.cpp checking INFO 2026-01-08T16:12:13 +0ms service=format name=gleam ext=.cpp checking INFO 2026-01-08T16:12:13 +0ms service=format name=dart ext=.cpp checking INFO 2026-01-08T16:12:13 +0ms service=format name=clang-format ext=.cpp checking INFO 2026-01-08T16:12:13 +0ms service=format name=biome ext=.cpp checking INFO 2026-01-08T16:12:13 +2ms service=file.time sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 file=/app/input/dangling_cstr.cpp read INFO 2026-01-08T16:12:13 +0ms service=lsp file=/app/input/dangling_cstr.cpp touching file INFO 2026-01-08T16:12:13 +3ms service=bus type=message.part.updated publishing |  Edit app/input/dangling_cstr.cpp INFO 2026-01-08T16:12:13 +18ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:13 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:13 +0ms service=bus type=message.updated publishing The bug in `dangling_cstr.cpp` is a dangling pointer problem. In `Logger::formatMessage`: ```cpp 00009| std::string formatted = "[LOG] " + msg; 00010| return formatted.c_str(); // Dangling pointer! ``` The function creates a local `std::string` object named `formatted`. It then returns a pointer (`const char*`) to the internal character buffer of this string using `c_str()`. When the function exits, `formatted` is destroyed, and the returned pointer becomes invalid (dangling). **Fix:** The function should return the `std::string` by value, allowing the caller to manage the lifetime of the formatted message. I will change the return type of `Logger::formatMessage` from `const char*` to `std::string`. This requires a corresponding change in the return statement. **Edit 1: Change function signature** Original line 8: `00008| const char* formatMessage(const std::string& msg) {` I will replace `const char*` with `std::string`. `oldString`: `const char* formatMessage` `newString`: `std::string formatMessage` This will make the function return a string, which is what is needed. INFO 2026-01-08T16:12:13 +9ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:13 +1ms service=bus type=session.status publishing INFO 2026-01-08T16:12:13 +0ms service=session.prompt step=10 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 loop INFO 2026-01-08T16:12:13 +34ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:13 +3ms service=bus type=session.updated publishing INFO 2026-01-08T16:12:13 +1ms service=bus type=session.diff publishing INFO 2026-01-08T16:12:13 +4ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:13 +2ms service=session.prompt status=started resolveTools INFO 2026-01-08T16:12:13 +1ms service=tool.registry status=started invalid INFO 2026-01-08T16:12:13 +0ms service=tool.registry status=started bash INFO 2026-01-08T16:12:13 +1ms service=bash-tool shell=/usr/bin/bash bash tool using shell INFO 2026-01-08T16:12:13 +1ms service=tool.registry status=started read INFO 2026-01-08T16:12:13 +2ms service=tool.registry status=started glob INFO 2026-01-08T16:12:13 +0ms service=tool.registry status=started grep INFO 2026-01-08T16:12:13 +0ms service=tool.registry status=started edit INFO 2026-01-08T16:12:13 +0ms service=tool.registry status=started write INFO 2026-01-08T16:12:13 +0ms service=tool.registry status=started task INFO 2026-01-08T16:12:13 +1ms service=tool.registry status=started webfetch INFO 2026-01-08T16:12:13 +0ms service=tool.registry status=started todowrite INFO 2026-01-08T16:12:13 +0ms service=tool.registry status=started todoread INFO 2026-01-08T16:12:13 +1ms service=tool.registry status=started skill INFO 2026-01-08T16:12:13 +0ms service=tool.registry status=completed duration=6 invalid INFO 2026-01-08T16:12:13 +1ms service=tool.registry status=completed duration=4 read INFO 2026-01-08T16:12:13 +0ms service=tool.registry status=completed duration=3 glob INFO 2026-01-08T16:12:13 +0ms service=tool.registry status=completed duration=3 grep INFO 2026-01-08T16:12:13 +0ms service=tool.registry status=completed duration=3 edit INFO 2026-01-08T16:12:13 +0ms service=tool.registry status=completed duration=3 write INFO 2026-01-08T16:12:13 +0ms service=tool.registry status=completed duration=2 webfetch INFO 2026-01-08T16:12:13 +0ms service=tool.registry status=completed duration=2 todowrite INFO 2026-01-08T16:12:13 +0ms service=tool.registry status=completed duration=2 todoread INFO 2026-01-08T16:12:13 +0ms service=tool.registry status=completed duration=7 bash INFO 2026-01-08T16:12:13 +0ms service=tool.registry status=completed duration=1 skill INFO 2026-01-08T16:12:13 +2ms service=tool.registry status=completed duration=5 task INFO 2026-01-08T16:12:13 +2ms service=session.prompt status=completed duration=12 resolveTools INFO 2026-01-08T16:12:13 +27ms service=session.processor process INFO 2026-01-08T16:12:13 +2ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build stream INFO 2026-01-08T16:12:13 +0ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build params={"temperature":1,"topP":0.95,"topK":64,"options":{}} params INFO 2026-01-08T16:12:13 +15ms service=bus type=session.status publishing INFO 2026-01-08T16:12:14 +662ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:14 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:14 +37ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:14 +5ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:14 +51ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:14 +96ms service=bus type=message.part.updated publishing ERROR 2026-01-08T16:12:14 +12ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:12:14 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:12:14 +160ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:14 +168ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:14 +17ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:14 +193ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:14 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:14 +2ms service=bus type=file.edited publishing INFO 2026-01-08T16:12:14 +1ms service=format file=/app/input/dangling_cstr.cpp formatting INFO 2026-01-08T16:12:14 +0ms service=format name=zig ext=.cpp checking INFO 2026-01-08T16:12:14 +0ms service=format name=uv format ext=.cpp checking INFO 2026-01-08T16:12:14 +0ms service=format name=terraform ext=.cpp checking INFO 2026-01-08T16:12:14 +0ms service=format name=standardrb ext=.cpp checking INFO 2026-01-08T16:12:14 +0ms service=format name=shfmt ext=.cpp checking INFO 2026-01-08T16:12:14 +0ms service=format name=ruff ext=.cpp checking INFO 2026-01-08T16:12:14 +0ms service=format name=rubocop ext=.cpp checking INFO 2026-01-08T16:12:14 +0ms service=format name=air ext=.cpp checking INFO 2026-01-08T16:12:14 +0ms service=format name=prettier ext=.cpp checking INFO 2026-01-08T16:12:14 +0ms service=format name=oxfmt ext=.cpp checking INFO 2026-01-08T16:12:14 +0ms service=format name=ocamlformat ext=.cpp checking INFO 2026-01-08T16:12:14 +0ms service=format name=nixfmt ext=.cpp checking INFO 2026-01-08T16:12:14 +0ms service=format name=mix ext=.cpp checking INFO 2026-01-08T16:12:14 +0ms service=format name=latexindent ext=.cpp checking INFO 2026-01-08T16:12:14 +0ms service=format name=ktlint ext=.cpp checking INFO 2026-01-08T16:12:14 +0ms service=format name=htmlbeautifier ext=.cpp checking INFO 2026-01-08T16:12:14 +0ms service=format name=gofmt ext=.cpp checking INFO 2026-01-08T16:12:14 +0ms service=format name=gleam ext=.cpp checking INFO 2026-01-08T16:12:14 +0ms service=format name=dart ext=.cpp checking INFO 2026-01-08T16:12:14 +0ms service=format name=clang-format ext=.cpp checking INFO 2026-01-08T16:12:14 +0ms service=format name=biome ext=.cpp checking INFO 2026-01-08T16:12:14 +2ms service=file.time sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 file=/app/input/dangling_cstr.cpp read INFO 2026-01-08T16:12:14 +0ms service=lsp file=/app/input/dangling_cstr.cpp touching file INFO 2026-01-08T16:12:14 +6ms service=bus type=message.part.updated publishing |  Edit app/input/dangling_cstr.cpp INFO 2026-01-08T16:12:14 +3ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:14 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:14 +1ms service=bus type=message.updated publishing **Edit 2: Change return statement** Original line 10: `00010| return formatted.c_str(); // Dangling pointer!` I will replace `formatted.c_str();` with `formatted;`. `oldString`: `formatted.c_str(); // Dangling pointer!` `newString`: `formatted;` I will use `return formatted.c_str(); // Dangling pointer!` as `oldString` and `return formatted;` as `newString`. I will include `return` to ensure I replace the whole statement correctly. Wait, I need to check the indentation. Original line 10: `00010| return formatted.c_str(); // Dangling pointer!` `oldString`: `return formatted.c_str(); // Dangling pointer!` `newString`: `return formatted;` I'll use the full statement. INFO 2026-01-08T16:12:14 +5ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:14 +7ms service=bus type=session.status publishing INFO 2026-01-08T16:12:14 +1ms service=session.prompt step=11 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 loop INFO 2026-01-08T16:12:14 +30ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:14 +2ms service=bus type=session.updated publishing INFO 2026-01-08T16:12:14 +2ms service=bus type=session.diff publishing INFO 2026-01-08T16:12:14 +2ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:14 +0ms service=session.prompt status=started resolveTools INFO 2026-01-08T16:12:14 +0ms service=tool.registry status=started invalid INFO 2026-01-08T16:12:14 +0ms service=tool.registry status=started bash INFO 2026-01-08T16:12:14 +0ms service=bash-tool shell=/usr/bin/bash bash tool using shell INFO 2026-01-08T16:12:14 +1ms service=tool.registry status=started read INFO 2026-01-08T16:12:14 +0ms service=tool.registry status=started glob INFO 2026-01-08T16:12:14 +0ms service=tool.registry status=started grep INFO 2026-01-08T16:12:14 +0ms service=tool.registry status=started edit INFO 2026-01-08T16:12:14 +0ms service=tool.registry status=started write INFO 2026-01-08T16:12:14 +0ms service=tool.registry status=started task INFO 2026-01-08T16:12:14 +0ms service=tool.registry status=started webfetch INFO 2026-01-08T16:12:14 +0ms service=tool.registry status=started todowrite INFO 2026-01-08T16:12:14 +0ms service=tool.registry status=started todoread INFO 2026-01-08T16:12:14 +0ms service=tool.registry status=started skill INFO 2026-01-08T16:12:14 +0ms service=tool.registry status=completed duration=1 invalid INFO 2026-01-08T16:12:14 +0ms service=tool.registry status=completed duration=0 read INFO 2026-01-08T16:12:14 +0ms service=tool.registry status=completed duration=0 glob INFO 2026-01-08T16:12:14 +0ms service=tool.registry status=completed duration=0 grep INFO 2026-01-08T16:12:14 +0ms service=tool.registry status=completed duration=0 edit INFO 2026-01-08T16:12:14 +0ms service=tool.registry status=completed duration=0 write INFO 2026-01-08T16:12:14 +0ms service=tool.registry status=completed duration=0 webfetch INFO 2026-01-08T16:12:14 +0ms service=tool.registry status=completed duration=0 todowrite INFO 2026-01-08T16:12:14 +0ms service=tool.registry status=completed duration=0 todoread INFO 2026-01-08T16:12:14 +0ms service=tool.registry status=completed duration=1 bash INFO 2026-01-08T16:12:14 +1ms service=tool.registry status=completed duration=0 skill INFO 2026-01-08T16:12:14 +0ms service=tool.registry status=completed duration=1 task INFO 2026-01-08T16:12:14 +1ms service=session.prompt status=completed duration=3 resolveTools INFO 2026-01-08T16:12:14 +8ms service=session.processor process INFO 2026-01-08T16:12:14 +0ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build stream INFO 2026-01-08T16:12:14 +1ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build params={"temperature":1,"topP":0.95,"topK":64,"options":{}} params INFO 2026-01-08T16:12:14 +6ms service=bus type=session.status publishing ERROR 2026-01-08T16:12:15 +538ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:12:15 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:12:15 +37ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:15 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:15 +56ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:15 +56ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:15 +108ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:15 +109ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:15 +126ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:16 +76ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:16 +277ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:16 +37ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:16 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:16 +9ms service=bus type=file.edited publishing INFO 2026-01-08T16:12:16 +0ms service=format file=/app/input/dangling_cstr.cpp formatting INFO 2026-01-08T16:12:16 +0ms service=format name=zig ext=.cpp checking INFO 2026-01-08T16:12:16 +0ms service=format name=uv format ext=.cpp checking INFO 2026-01-08T16:12:16 +0ms service=format name=terraform ext=.cpp checking INFO 2026-01-08T16:12:16 +0ms service=format name=standardrb ext=.cpp checking INFO 2026-01-08T16:12:16 +0ms service=format name=shfmt ext=.cpp checking INFO 2026-01-08T16:12:16 +0ms service=format name=ruff ext=.cpp checking INFO 2026-01-08T16:12:16 +0ms service=format name=rubocop ext=.cpp checking INFO 2026-01-08T16:12:16 +0ms service=format name=air ext=.cpp checking INFO 2026-01-08T16:12:16 +0ms service=format name=prettier ext=.cpp checking INFO 2026-01-08T16:12:16 +0ms service=format name=oxfmt ext=.cpp checking INFO 2026-01-08T16:12:16 +1ms service=format name=ocamlformat ext=.cpp checking INFO 2026-01-08T16:12:16 +0ms service=format name=nixfmt ext=.cpp checking INFO 2026-01-08T16:12:16 +0ms service=format name=mix ext=.cpp checking INFO 2026-01-08T16:12:16 +0ms service=format name=latexindent ext=.cpp checking INFO 2026-01-08T16:12:16 +0ms service=format name=ktlint ext=.cpp checking INFO 2026-01-08T16:12:16 +0ms service=format name=htmlbeautifier ext=.cpp checking INFO 2026-01-08T16:12:16 +0ms service=format name=gofmt ext=.cpp checking INFO 2026-01-08T16:12:16 +0ms service=format name=gleam ext=.cpp checking INFO 2026-01-08T16:12:16 +0ms service=format name=dart ext=.cpp checking INFO 2026-01-08T16:12:16 +0ms service=format name=clang-format ext=.cpp checking INFO 2026-01-08T16:12:16 +0ms service=format name=biome ext=.cpp checking INFO 2026-01-08T16:12:16 +4ms service=file.time sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 file=/app/input/dangling_cstr.cpp read INFO 2026-01-08T16:12:16 +0ms service=lsp file=/app/input/dangling_cstr.cpp touching file INFO 2026-01-08T16:12:16 +2ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:16 +13ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:16 +2ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:16 +0ms service=bus type=message.updated publishing **Edit 3: Update `log` function** Now the `log` function must be updated as it receives a `std::string` and not a `const char*`. Original lines 14-15: ```cpp 00014| const char* formatted = formatMessage(msg); 00015| std::cout << formatted << std::endl; ``` New lines 14-15: ```cpp 00014| std::string formatted = formatMessage(msg); 00015| std::cout << formatted << std::endl; ``` I will replace `const char*` with `std::string` on line 14. `oldString`: `const char* formatted` `newString`: `std::string formatted` |  Edit app/input/dangling_cstr.cpp INFO 2026-01-08T16:12:16 +19ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:16 +0ms service=bus type=session.status publishing INFO 2026-01-08T16:12:16 +1ms service=session.prompt step=12 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 loop INFO 2026-01-08T16:12:16 +64ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:16 +2ms service=bus type=session.updated publishing INFO 2026-01-08T16:12:16 +1ms service=bus type=session.diff publishing INFO 2026-01-08T16:12:16 +4ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:16 +0ms service=session.prompt status=started resolveTools INFO 2026-01-08T16:12:16 +1ms service=tool.registry status=started invalid INFO 2026-01-08T16:12:16 +0ms service=tool.registry status=started bash INFO 2026-01-08T16:12:16 +0ms service=bash-tool shell=/usr/bin/bash bash tool using shell INFO 2026-01-08T16:12:16 +1ms service=tool.registry status=started read INFO 2026-01-08T16:12:16 +0ms service=tool.registry status=started glob INFO 2026-01-08T16:12:16 +0ms service=tool.registry status=started grep INFO 2026-01-08T16:12:16 +0ms service=tool.registry status=started edit INFO 2026-01-08T16:12:16 +0ms service=tool.registry status=started write INFO 2026-01-08T16:12:16 +0ms service=tool.registry status=started task INFO 2026-01-08T16:12:16 +0ms service=tool.registry status=started webfetch INFO 2026-01-08T16:12:16 +0ms service=tool.registry status=started todowrite INFO 2026-01-08T16:12:16 +0ms service=tool.registry status=started todoread INFO 2026-01-08T16:12:16 +0ms service=tool.registry status=started skill INFO 2026-01-08T16:12:16 +0ms service=tool.registry status=completed duration=1 invalid INFO 2026-01-08T16:12:16 +1ms service=tool.registry status=completed duration=1 read INFO 2026-01-08T16:12:16 +0ms service=tool.registry status=completed duration=1 glob INFO 2026-01-08T16:12:16 +0ms service=tool.registry status=completed duration=1 grep INFO 2026-01-08T16:12:16 +0ms service=tool.registry status=completed duration=1 edit INFO 2026-01-08T16:12:16 +0ms service=tool.registry status=completed duration=1 write INFO 2026-01-08T16:12:16 +0ms service=tool.registry status=completed duration=1 webfetch INFO 2026-01-08T16:12:16 +0ms service=tool.registry status=completed duration=1 todowrite INFO 2026-01-08T16:12:16 +0ms service=tool.registry status=completed duration=1 todoread INFO 2026-01-08T16:12:16 +0ms service=tool.registry status=completed duration=2 bash INFO 2026-01-08T16:12:16 +0ms service=tool.registry status=completed duration=1 skill INFO 2026-01-08T16:12:16 +0ms service=tool.registry status=completed duration=1 task INFO 2026-01-08T16:12:16 +4ms service=session.prompt status=completed duration=7 resolveTools INFO 2026-01-08T16:12:16 +8ms service=session.processor process INFO 2026-01-08T16:12:16 +0ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build stream INFO 2026-01-08T16:12:16 +0ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build params={"temperature":1,"topP":0.95,"topK":64,"options":{}} params INFO 2026-01-08T16:12:16 +8ms service=bus type=session.status publishing ERROR 2026-01-08T16:12:16 +9ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:12:16 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:12:17 +588ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:17 +2ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:17 +26ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:17 +86ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:17 +6ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:17 +9ms service=lsp file=/app/input/init_order.cpp touching file INFO 2026-01-08T16:12:17 +3ms service=file.time sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 file=/app/input/init_order.cpp read INFO 2026-01-08T16:12:17 +2ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:17 +7ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:17 +0ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:17 +4ms service=bus type=message.updated publishing ### 6. Fix `init_order.cpp` I will read the file to find the bug. |  Read app/input/init_order.cpp INFO 2026-01-08T16:12:17 +19ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:17 +0ms service=bus type=session.status publishing INFO 2026-01-08T16:12:17 +0ms service=session.prompt step=13 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 loop INFO 2026-01-08T16:12:17 +68ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:17 +5ms service=bus type=session.updated publishing INFO 2026-01-08T16:12:17 +1ms service=bus type=session.diff publishing INFO 2026-01-08T16:12:17 +2ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:17 +1ms service=session.prompt status=started resolveTools INFO 2026-01-08T16:12:17 +0ms service=tool.registry status=started invalid INFO 2026-01-08T16:12:17 +0ms service=tool.registry status=started bash INFO 2026-01-08T16:12:17 +0ms service=bash-tool shell=/usr/bin/bash bash tool using shell INFO 2026-01-08T16:12:17 +0ms service=tool.registry status=started read INFO 2026-01-08T16:12:17 +0ms service=tool.registry status=started glob INFO 2026-01-08T16:12:17 +0ms service=tool.registry status=started grep INFO 2026-01-08T16:12:17 +0ms service=tool.registry status=started edit INFO 2026-01-08T16:12:17 +0ms service=tool.registry status=started write INFO 2026-01-08T16:12:17 +0ms service=tool.registry status=started task INFO 2026-01-08T16:12:17 +0ms service=tool.registry status=started webfetch INFO 2026-01-08T16:12:17 +0ms service=tool.registry status=started todowrite INFO 2026-01-08T16:12:17 +0ms service=tool.registry status=started todoread INFO 2026-01-08T16:12:17 +0ms service=tool.registry status=started skill INFO 2026-01-08T16:12:17 +1ms service=tool.registry status=completed duration=1 invalid INFO 2026-01-08T16:12:17 +0ms service=tool.registry status=completed duration=1 read INFO 2026-01-08T16:12:17 +0ms service=tool.registry status=completed duration=1 glob INFO 2026-01-08T16:12:17 +0ms service=tool.registry status=completed duration=1 grep INFO 2026-01-08T16:12:17 +0ms service=tool.registry status=completed duration=1 edit INFO 2026-01-08T16:12:17 +0ms service=tool.registry status=completed duration=1 write INFO 2026-01-08T16:12:17 +0ms service=tool.registry status=completed duration=1 webfetch INFO 2026-01-08T16:12:17 +0ms service=tool.registry status=completed duration=1 todowrite INFO 2026-01-08T16:12:17 +0ms service=tool.registry status=completed duration=1 todoread INFO 2026-01-08T16:12:17 +0ms service=tool.registry status=completed duration=1 bash INFO 2026-01-08T16:12:17 +0ms service=tool.registry status=completed duration=1 skill INFO 2026-01-08T16:12:17 +0ms service=tool.registry status=completed duration=1 task INFO 2026-01-08T16:12:17 +1ms service=session.prompt status=completed duration=2 resolveTools INFO 2026-01-08T16:12:17 +3ms service=session.processor process INFO 2026-01-08T16:12:17 +0ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build stream INFO 2026-01-08T16:12:17 +0ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build params={"temperature":1,"topP":0.95,"topK":64,"options":{}} params INFO 2026-01-08T16:12:17 +2ms service=bus type=session.status publishing INFO 2026-01-08T16:12:17 +619ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:17 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:17 +3ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:18 +99ms service=bus type=message.part.updated publishing ERROR 2026-01-08T16:12:18 +41ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:12:18 +1ms service=default e=NotFoundError rejection INFO 2026-01-08T16:12:18 +161ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:18 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:18 +139ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:18 +127ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:18 +230ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:19 +271ms service=bus type=message.part.updated publishing ERROR 2026-01-08T16:12:19 +236ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:12:19 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:12:19 +28ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:19 +214ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:19 +175ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:19 +176ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:20 +177ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:20 +265ms service=bus type=message.part.updated publishing ERROR 2026-01-08T16:12:20 +0ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:12:20 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:12:20 +172ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:20 +94ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:20 +190ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:20 +30ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:20 +3ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:20 +10ms service=bus type=file.edited publishing INFO 2026-01-08T16:12:20 +0ms service=format file=/app/input/init_order.cpp formatting INFO 2026-01-08T16:12:20 +0ms service=format name=zig ext=.cpp checking INFO 2026-01-08T16:12:20 +0ms service=format name=uv format ext=.cpp checking INFO 2026-01-08T16:12:20 +0ms service=format name=terraform ext=.cpp checking INFO 2026-01-08T16:12:20 +0ms service=format name=standardrb ext=.cpp checking INFO 2026-01-08T16:12:20 +1ms service=format name=shfmt ext=.cpp checking INFO 2026-01-08T16:12:20 +0ms service=format name=ruff ext=.cpp checking INFO 2026-01-08T16:12:20 +0ms service=format name=rubocop ext=.cpp checking INFO 2026-01-08T16:12:20 +0ms service=format name=air ext=.cpp checking INFO 2026-01-08T16:12:20 +0ms service=format name=prettier ext=.cpp checking INFO 2026-01-08T16:12:20 +0ms service=format name=oxfmt ext=.cpp checking INFO 2026-01-08T16:12:20 +0ms service=format name=ocamlformat ext=.cpp checking INFO 2026-01-08T16:12:20 +0ms service=format name=nixfmt ext=.cpp checking INFO 2026-01-08T16:12:20 +0ms service=format name=mix ext=.cpp checking INFO 2026-01-08T16:12:20 +0ms service=format name=latexindent ext=.cpp checking INFO 2026-01-08T16:12:20 +1ms service=format name=ktlint ext=.cpp checking INFO 2026-01-08T16:12:20 +0ms service=format name=htmlbeautifier ext=.cpp checking INFO 2026-01-08T16:12:20 +0ms service=format name=gofmt ext=.cpp checking INFO 2026-01-08T16:12:20 +0ms service=format name=gleam ext=.cpp checking INFO 2026-01-08T16:12:20 +0ms service=format name=dart ext=.cpp checking INFO 2026-01-08T16:12:20 +0ms service=format name=clang-format ext=.cpp checking INFO 2026-01-08T16:12:20 +0ms service=format name=biome ext=.cpp checking INFO 2026-01-08T16:12:20 +5ms service=file.time sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 file=/app/input/init_order.cpp read INFO 2026-01-08T16:12:20 +1ms service=lsp file=/app/input/init_order.cpp touching file INFO 2026-01-08T16:12:20 +1ms service=bus type=message.part.updated publishing The bug in `init_order.cpp` is a classic member initialization order issue (line 8). The members are initialized in the order they are **declared** in the class definition, not the order they appear in the initializer list. Declaration order (lines 21-23): 1. `x_` 2. `y_` 3. `scale_` Initialization list order (lines 7-9): 1. `scale_` 2. `x_` (uses `scale_`) 3. `y_` (uses `scale_`) When initializing `x_`, `scale_` has not been initialized yet (it's initialized third). This leads to undefined behavior. **Fix:** Reorder the member declarations in the `Point` class so that `scale_` is declared before `x_` and `y_`. Since `x_` and `y_` depend on `scale_`, `scale_` must come first. Current declarations (lines 21-23): ```cpp 00021| double x_; // Initialized first (declaration order) 00022| double y_; // Initialized second 00023| double scale_; // Initialized third, but used in x_ and y_ init! ``` I need to swap line 21 with line 23. I will perform two `edit` operations: 1. Replace line 21 (`double x_;`) with a temporary placeholder (or `scale_`). 2. Replace line 23 (`double scale_;`) with `x_`. 3. Fix the comments to reflect the new order. Since swapping lines is complex with the `edit` tool, I will try to make one block replacement if possible. The easiest way is to reorder the declarations to be `scale_`, `x_`, `y_`. I will replace lines 21-23 with the corrected order. Old block (lines 21-23): ```cpp 00021| double x_; // Initialized first (declaration order) 00022| double y_; // Initialized second 00023| double scale_; // Initialized third, but used in x_ and y_ init! ``` New block (corrected order, will use a clearer comment): ```cpp 00021| double scale_; // Initialized first (needed for x_ and y_) 00022| double x_; // Initialized second 00023| double y_; // Initialized third ``` I will replace lines 21-23. `oldString`: ```cpp double x_; // Initialized first (declaration order) double y_; // Initialized second double scale_; // Initialized third, but used in x_ and y_ init! ``` `newString`: ```cpp double scale_; // Initialized first (needed for x_ and y_) double x_; // Initialized second double y_; // Initialized third ``` Wait, the `edit` tool cannot handle multi-line replacements like this directly because it's a replacement tool, not a block editor. I will use three sequential edits to swap `x_` and `scale_`. **Edit 1: Change line 21 from `double x_` to `double scale_`** Original line 21: `00021| double x_; // Initialized first (declaration order)` `oldString`: `double x_; // Initialized first (declaration order)` `newString`: `double scale_; // Initialized first (needed for x_ and y_)` INFO 2026-01-08T16:12:20 +10ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:20 +7ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:20 +0ms service=bus type=message.updated publishing |  Edit app/input/init_order.cpp INFO 2026-01-08T16:12:20 +11ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:20 +1ms service=bus type=session.status publishing INFO 2026-01-08T16:12:20 +0ms service=session.prompt step=14 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 loop INFO 2026-01-08T16:12:20 +36ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:20 +1ms service=session.prompt status=started resolveTools INFO 2026-01-08T16:12:20 +0ms service=tool.registry status=started invalid INFO 2026-01-08T16:12:20 +0ms service=tool.registry status=started bash INFO 2026-01-08T16:12:20 +0ms service=bash-tool shell=/usr/bin/bash bash tool using shell INFO 2026-01-08T16:12:20 +3ms service=tool.registry status=started read INFO 2026-01-08T16:12:20 +0ms service=tool.registry status=started glob INFO 2026-01-08T16:12:20 +0ms service=tool.registry status=started grep INFO 2026-01-08T16:12:20 +0ms service=tool.registry status=started edit INFO 2026-01-08T16:12:20 +0ms service=tool.registry status=started write INFO 2026-01-08T16:12:20 +0ms service=tool.registry status=started task INFO 2026-01-08T16:12:20 +0ms service=tool.registry status=started webfetch INFO 2026-01-08T16:12:20 +0ms service=tool.registry status=started todowrite INFO 2026-01-08T16:12:20 +0ms service=tool.registry status=started todoread INFO 2026-01-08T16:12:20 +0ms service=tool.registry status=started skill INFO 2026-01-08T16:12:20 +0ms service=tool.registry status=completed duration=3 invalid INFO 2026-01-08T16:12:20 +0ms service=tool.registry status=completed duration=0 read INFO 2026-01-08T16:12:20 +0ms service=tool.registry status=completed duration=0 glob INFO 2026-01-08T16:12:20 +0ms service=tool.registry status=completed duration=0 grep INFO 2026-01-08T16:12:20 +0ms service=tool.registry status=completed duration=0 edit INFO 2026-01-08T16:12:20 +0ms service=tool.registry status=completed duration=0 write INFO 2026-01-08T16:12:20 +0ms service=tool.registry status=completed duration=0 webfetch INFO 2026-01-08T16:12:20 +0ms service=tool.registry status=completed duration=0 todowrite INFO 2026-01-08T16:12:20 +0ms service=tool.registry status=completed duration=0 todoread INFO 2026-01-08T16:12:20 +0ms service=tool.registry status=completed duration=3 bash INFO 2026-01-08T16:12:20 +1ms service=tool.registry status=completed duration=1 skill INFO 2026-01-08T16:12:20 +0ms service=tool.registry status=completed duration=1 task INFO 2026-01-08T16:12:20 +2ms service=session.prompt status=completed duration=7 resolveTools INFO 2026-01-08T16:12:20 +16ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:20 +1ms service=bus type=session.updated publishing INFO 2026-01-08T16:12:20 +1ms service=bus type=session.diff publishing INFO 2026-01-08T16:12:20 +1ms service=session.processor process INFO 2026-01-08T16:12:20 +0ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build stream INFO 2026-01-08T16:12:20 +2ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build params={"temperature":1,"topP":0.95,"topK":64,"options":{}} params INFO 2026-01-08T16:12:20 +4ms service=bus type=session.status publishing ERROR 2026-01-08T16:12:21 +404ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:12:21 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:12:21 +163ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:21 +0ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:21 +46ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:21 +40ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:21 +86ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:21 +127ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:21 +234ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:22 +28ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:22 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:22 +3ms service=bus type=file.edited publishing INFO 2026-01-08T16:12:22 +0ms service=format file=/app/input/init_order.cpp formatting INFO 2026-01-08T16:12:22 +1ms service=format name=zig ext=.cpp checking INFO 2026-01-08T16:12:22 +0ms service=format name=uv format ext=.cpp checking INFO 2026-01-08T16:12:22 +0ms service=format name=terraform ext=.cpp checking INFO 2026-01-08T16:12:22 +0ms service=format name=standardrb ext=.cpp checking INFO 2026-01-08T16:12:22 +0ms service=format name=shfmt ext=.cpp checking INFO 2026-01-08T16:12:22 +0ms service=format name=ruff ext=.cpp checking INFO 2026-01-08T16:12:22 +0ms service=format name=rubocop ext=.cpp checking INFO 2026-01-08T16:12:22 +0ms service=format name=air ext=.cpp checking INFO 2026-01-08T16:12:22 +0ms service=format name=prettier ext=.cpp checking INFO 2026-01-08T16:12:22 +0ms service=format name=oxfmt ext=.cpp checking INFO 2026-01-08T16:12:22 +1ms service=format name=ocamlformat ext=.cpp checking INFO 2026-01-08T16:12:22 +0ms service=format name=nixfmt ext=.cpp checking INFO 2026-01-08T16:12:22 +0ms service=format name=mix ext=.cpp checking INFO 2026-01-08T16:12:22 +0ms service=format name=latexindent ext=.cpp checking INFO 2026-01-08T16:12:22 +0ms service=format name=ktlint ext=.cpp checking INFO 2026-01-08T16:12:22 +0ms service=format name=htmlbeautifier ext=.cpp checking INFO 2026-01-08T16:12:22 +0ms service=format name=gofmt ext=.cpp checking INFO 2026-01-08T16:12:22 +1ms service=format name=gleam ext=.cpp checking INFO 2026-01-08T16:12:22 +0ms service=format name=dart ext=.cpp checking INFO 2026-01-08T16:12:22 +0ms service=format name=clang-format ext=.cpp checking INFO 2026-01-08T16:12:22 +0ms service=format name=biome ext=.cpp checking INFO 2026-01-08T16:12:22 +1ms service=file.time sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 file=/app/input/init_order.cpp read INFO 2026-01-08T16:12:22 +0ms service=lsp file=/app/input/init_order.cpp touching file INFO 2026-01-08T16:12:22 +1ms service=bus type=message.part.updated publishing **Edit 2: Change line 23 from `double scale_` to `double x_`** Original line 23: `00023| double scale_; // Initialized third, but used in x_ and y_ init!` `oldString`: `double scale_; // Initialized third, but used in x_ and y_ init!` `newString`: `double x_; // Initialized third (was x_)` INFO 2026-01-08T16:12:22 +9ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:22 +2ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:22 +1ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:22 +2ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:22 +0ms service=bus type=session.status publishing INFO 2026-01-08T16:12:22 +1ms service=session.prompt step=15 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 loop |  Edit app/input/init_order.cpp INFO 2026-01-08T16:12:22 +22ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:22 +1ms service=bus type=session.updated publishing INFO 2026-01-08T16:12:22 +0ms service=bus type=session.diff publishing INFO 2026-01-08T16:12:22 +2ms service=bus type=message.updated publishing INFO 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INFO 2026-01-08T16:12:22 +0ms service=tool.registry status=completed duration=1 task INFO 2026-01-08T16:12:22 +2ms service=session.prompt status=completed duration=4 resolveTools INFO 2026-01-08T16:12:22 +12ms service=session.processor process INFO 2026-01-08T16:12:22 +0ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build stream INFO 2026-01-08T16:12:22 +1ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build params={"temperature":1,"topP":0.95,"topK":64,"options":{}} params INFO 2026-01-08T16:12:22 +4ms service=bus type=session.status publishing ERROR 2026-01-08T16:12:22 +369ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:12:22 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:12:22 +231ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:22 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:22 +50ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:22 +54ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:22 +89ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:23 +149ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:23 +195ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:23 +178ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:23 +221ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:23 +2ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:23 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:23 +2ms service=lsp file=/app/input/off_by_one.cpp touching file INFO 2026-01-08T16:12:23 +0ms service=file.time sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 file=/app/input/off_by_one.cpp read INFO 2026-01-08T16:12:23 +2ms service=bus type=message.part.updated publishing |  Read app/input/off_by_one.cpp INFO 2026-01-08T16:12:23 +16ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:23 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:23 +1ms service=bus type=message.updated publishing The declaration order in the class body is now: 1. `scale_` 2. `y_` 3. `x_` This means `scale_` is initialized first, which is correct since `x_` and `y_` depend on it. Now I will fix the comments to reflect the correct initialization order. The most important thing is that `scale_` is first. The current order is fine: `scale_`, `y_`, `x_`. I will check the comments on line 22 and 23. Line 22: `00022| double y_; // Initialized second` (Correct, still second) Line 23: `00023| double x_; // Initialized third (was x_)` (Correct, now third) The important change was making `scale_` the first member declared. The bug is fixed. ### 7. Fix `off_by_one.cpp` I will read the file to find the bug. INFO 2026-01-08T16:12:23 +11ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:23 +1ms service=bus type=session.status publishing INFO 2026-01-08T16:12:23 +0ms service=session.prompt step=16 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 loop ERROR 2026-01-08T16:12:23 +29ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:12:23 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:12:23 +32ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:23 +2ms service=bus type=session.updated publishing INFO 2026-01-08T16:12:23 +0ms service=bus type=session.diff publishing INFO 2026-01-08T16:12:23 +5ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:23 +0ms service=session.prompt status=started resolveTools INFO 2026-01-08T16:12:23 +1ms service=tool.registry status=started invalid INFO 2026-01-08T16:12:23 +0ms service=tool.registry status=started bash INFO 2026-01-08T16:12:23 +0ms service=bash-tool shell=/usr/bin/bash bash tool using shell INFO 2026-01-08T16:12:23 +1ms service=tool.registry status=started read INFO 2026-01-08T16:12:23 +0ms service=tool.registry status=started glob INFO 2026-01-08T16:12:23 +0ms service=tool.registry status=started grep INFO 2026-01-08T16:12:23 +0ms service=tool.registry status=started edit INFO 2026-01-08T16:12:23 +1ms service=tool.registry status=started write INFO 2026-01-08T16:12:23 +0ms service=tool.registry status=started task INFO 2026-01-08T16:12:23 +0ms service=tool.registry status=started webfetch INFO 2026-01-08T16:12:23 +0ms service=tool.registry status=started todowrite INFO 2026-01-08T16:12:23 +0ms service=tool.registry status=started todoread INFO 2026-01-08T16:12:23 +0ms service=tool.registry status=started skill INFO 2026-01-08T16:12:23 +1ms service=tool.registry status=completed duration=3 invalid INFO 2026-01-08T16:12:23 +0ms service=tool.registry status=completed duration=2 read INFO 2026-01-08T16:12:23 +0ms service=tool.registry status=completed duration=2 glob INFO 2026-01-08T16:12:23 +0ms service=tool.registry status=completed duration=2 grep INFO 2026-01-08T16:12:23 +0ms service=tool.registry status=completed duration=2 edit INFO 2026-01-08T16:12:23 +0ms service=tool.registry status=completed duration=1 write INFO 2026-01-08T16:12:23 +0ms service=tool.registry status=completed duration=1 webfetch INFO 2026-01-08T16:12:23 +0ms service=tool.registry status=completed duration=1 todowrite INFO 2026-01-08T16:12:23 +0ms service=tool.registry status=completed duration=1 todoread INFO 2026-01-08T16:12:23 +2ms service=tool.registry status=completed duration=5 bash INFO 2026-01-08T16:12:23 +0ms service=tool.registry status=completed duration=3 skill INFO 2026-01-08T16:12:23 +0ms service=tool.registry status=completed duration=3 task INFO 2026-01-08T16:12:23 +2ms service=session.prompt status=completed duration=8 resolveTools INFO 2026-01-08T16:12:23 +12ms service=session.processor process INFO 2026-01-08T16:12:23 +0ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build stream INFO 2026-01-08T16:12:23 +1ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build params={"temperature":1,"topP":0.95,"topK":64,"options":{}} params INFO 2026-01-08T16:12:23 +6ms service=bus type=session.status publishing INFO 2026-01-08T16:12:24 +569ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:24 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:24 +66ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:24 +38ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:24 +117ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:24 +84ms service=bus type=message.part.updated publishing ERROR 2026-01-08T16:12:24 +97ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:12:24 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:12:24 +79ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:24 +157ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:25 +218ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:25 +113ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:25 +176ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:25 +23ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:25 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:25 +8ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:25 +12ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:25 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:25 +1ms service=bus type=message.updated publishing The bug in `off_by_one.cpp` is a clear out-of-bounds access due to an off-by-one error (line 17). ```cpp 00016| // BUG: should be i < 5, not i <= 5 00017| for (int i = 0; i <= 5; i++) { // Off-by-one! 00018| std::cout << data_[0][i] << " "; 00019| } ``` The array `data_` is a 5x5 matrix, meaning the valid indices for the second dimension are 0 through 4. The loop runs for `i = 0, 1, 2, 3, 4, 5`. When `i` is 5, it accesses `data_[0][5]`, which is an out-of-bounds access and leads to Undefined Behavior (and will be caught by UBSan/ASan). **Fix:** Change the loop condition from `i <= 5` to `i < 5`. Original line 17: `00017| for (int i = 0; i <= 5; i++) { // Off-by-one!` `oldString`: `i <= 5` `newString`: `i < 5` INFO 2026-01-08T16:12:25 +8ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:25 +1ms service=bus type=session.status publishing INFO 2026-01-08T16:12:25 +0ms service=session.prompt step=17 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 loop INFO 2026-01-08T16:12:25 +60ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:25 +3ms service=bus type=session.updated publishing INFO 2026-01-08T16:12:25 +0ms service=bus type=session.diff publishing INFO 2026-01-08T16:12:25 +1ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:25 +1ms service=session.prompt status=started resolveTools INFO 2026-01-08T16:12:25 +0ms service=tool.registry status=started invalid INFO 2026-01-08T16:12:25 +1ms service=tool.registry status=started bash INFO 2026-01-08T16:12:25 +0ms service=bash-tool shell=/usr/bin/bash bash tool using shell INFO 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modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build stream INFO 2026-01-08T16:12:25 +1ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build params={"temperature":1,"topP":0.95,"topK":64,"options":{}} params INFO 2026-01-08T16:12:25 +7ms service=bus type=session.status publishing ERROR 2026-01-08T16:12:25 +198ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:12:25 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:12:26 +373ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:26 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:26 +30ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:26 +61ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:26 +99ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:26 +113ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:26 +250ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:26 +122ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:27 +188ms service=bus type=message.part.updated publishing ERROR 2026-01-08T16:12:27 +142ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:12:27 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:12:27 +106ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:27 +25ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:27 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:27 +2ms service=bus type=file.edited publishing INFO 2026-01-08T16:12:27 +0ms service=format file=/app/input/off_by_one.cpp formatting INFO 2026-01-08T16:12:27 +0ms service=format name=zig ext=.cpp checking INFO 2026-01-08T16:12:27 +0ms service=format name=uv format ext=.cpp checking INFO 2026-01-08T16:12:27 +0ms service=format name=terraform ext=.cpp checking INFO 2026-01-08T16:12:27 +0ms service=format name=standardrb ext=.cpp checking INFO 2026-01-08T16:12:27 +0ms service=format name=shfmt ext=.cpp checking INFO 2026-01-08T16:12:27 +0ms service=format name=ruff ext=.cpp checking INFO 2026-01-08T16:12:27 +0ms service=format name=rubocop ext=.cpp checking INFO 2026-01-08T16:12:27 +0ms service=format name=air ext=.cpp checking INFO 2026-01-08T16:12:27 +0ms service=format name=prettier ext=.cpp checking INFO 2026-01-08T16:12:27 +0ms service=format name=oxfmt ext=.cpp checking INFO 2026-01-08T16:12:27 +0ms service=format name=ocamlformat ext=.cpp checking INFO 2026-01-08T16:12:27 +0ms service=format name=nixfmt ext=.cpp checking INFO 2026-01-08T16:12:27 +0ms service=format name=mix ext=.cpp checking INFO 2026-01-08T16:12:27 +0ms service=format name=latexindent ext=.cpp checking INFO 2026-01-08T16:12:27 +0ms service=format name=ktlint ext=.cpp checking INFO 2026-01-08T16:12:27 +0ms service=format name=htmlbeautifier ext=.cpp checking INFO 2026-01-08T16:12:27 +1ms service=format name=gofmt ext=.cpp checking INFO 2026-01-08T16:12:27 +0ms service=format name=gleam ext=.cpp checking INFO 2026-01-08T16:12:27 +0ms service=format name=dart ext=.cpp checking INFO 2026-01-08T16:12:27 +0ms service=format name=clang-format ext=.cpp checking INFO 2026-01-08T16:12:27 +0ms service=format name=biome ext=.cpp checking INFO 2026-01-08T16:12:27 +0ms service=file.time sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 file=/app/input/off_by_one.cpp read INFO 2026-01-08T16:12:27 +1ms service=lsp file=/app/input/off_by_one.cpp touching file INFO 2026-01-08T16:12:27 +3ms service=bus type=message.part.updated publishing |  Edit app/input/off_by_one.cpp INFO 2026-01-08T16:12:27 +12ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:27 +2ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:27 +1ms service=bus type=message.updated publishing I received an error because `i <= 5` is not unique. It appears on line 17 and possibly in the constructor. Let me check the constructor: ```cpp 00007| for (int i = 0; i < 5; i++) { 00008| for (int j = 0; j < 5; j++) { ``` No, it's only in line 17. The `edit` tool might be interpreting the regex incorrectly or finding the string in another part of the file not visible in the snippet. Given the instruction, I must use more context. I will use `for (int i = 0; i <= 5; i++) {` as `oldString`. Original line 17: `00017| for (int i = 0; i <= 5; i++) { // Off-by-one!` `oldString`: `for (int i = 0; i <= 5; i++) { // Off-by-one!` `newString`: `for (int i = 0; i < 5; i++) { // Off-by-one!` INFO 2026-01-08T16:12:27 +9ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:27 +0ms service=bus type=session.status publishing INFO 2026-01-08T16:12:27 +0ms service=session.prompt step=18 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 loop INFO 2026-01-08T16:12:27 +23ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:27 +2ms service=bus type=session.updated publishing INFO 2026-01-08T16:12:27 +1ms service=bus type=session.diff publishing INFO 2026-01-08T16:12:27 +9ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:27 +1ms service=session.prompt status=started resolveTools INFO 2026-01-08T16:12:27 +0ms service=tool.registry status=started invalid INFO 2026-01-08T16:12:27 +0ms service=tool.registry status=started bash INFO 2026-01-08T16:12:27 +0ms service=bash-tool shell=/usr/bin/bash bash tool using shell INFO 2026-01-08T16:12:27 +0ms service=tool.registry status=started read INFO 2026-01-08T16:12:27 +0ms service=tool.registry status=started glob INFO 2026-01-08T16:12:27 +1ms service=tool.registry status=started grep INFO 2026-01-08T16:12:27 +0ms service=tool.registry status=started edit INFO 2026-01-08T16:12:27 +0ms service=tool.registry status=started write INFO 2026-01-08T16:12:27 +0ms service=tool.registry status=started task INFO 2026-01-08T16:12:27 +0ms service=tool.registry status=started webfetch INFO 2026-01-08T16:12:27 +0ms service=tool.registry status=started todowrite INFO 2026-01-08T16:12:27 +0ms service=tool.registry status=started todoread INFO 2026-01-08T16:12:27 +0ms service=tool.registry status=started skill INFO 2026-01-08T16:12:27 +0ms service=tool.registry status=completed duration=1 invalid INFO 2026-01-08T16:12:27 +0ms service=tool.registry status=completed duration=1 read INFO 2026-01-08T16:12:27 +0ms service=tool.registry status=completed duration=1 glob INFO 2026-01-08T16:12:27 +0ms service=tool.registry status=completed duration=0 grep INFO 2026-01-08T16:12:27 +0ms service=tool.registry status=completed duration=0 edit INFO 2026-01-08T16:12:27 +0ms service=tool.registry status=completed duration=0 write INFO 2026-01-08T16:12:27 +0ms service=tool.registry status=completed duration=0 webfetch INFO 2026-01-08T16:12:27 +0ms service=tool.registry status=completed duration=0 todowrite INFO 2026-01-08T16:12:27 +0ms service=tool.registry status=completed duration=0 todoread INFO 2026-01-08T16:12:27 +0ms service=tool.registry status=completed duration=1 bash INFO 2026-01-08T16:12:27 +3ms service=tool.registry status=completed duration=3 skill INFO 2026-01-08T16:12:27 +1ms service=tool.registry status=completed duration=4 task INFO 2026-01-08T16:12:27 +2ms service=session.prompt status=completed duration=7 resolveTools INFO 2026-01-08T16:12:27 +11ms service=session.processor process INFO 2026-01-08T16:12:27 +1ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build stream INFO 2026-01-08T16:12:27 +0ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build params={"temperature":1,"topP":0.95,"topK":64,"options":{}} params INFO 2026-01-08T16:12:27 +5ms service=bus type=session.status publishing INFO 2026-01-08T16:12:28 +675ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:28 +0ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:28 +56ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:28 +116ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:28 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:28 +3ms service=lsp file=/app/input/int_overflow.cpp touching file INFO 2026-01-08T16:12:28 +0ms service=file.time sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 file=/app/input/int_overflow.cpp read INFO 2026-01-08T16:12:28 +2ms service=bus type=message.part.updated publishing |  Read app/input/int_overflow.cpp INFO 2026-01-08T16:12:28 +12ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:28 +2ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:28 +1ms service=bus type=message.updated publishing ### 8. Fix `int_overflow.cpp` I will read the file to find the bug. INFO 2026-01-08T16:12:28 +13ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:28 +0ms service=bus type=session.status publishing INFO 2026-01-08T16:12:28 +0ms service=session.prompt step=19 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 loop ERROR 2026-01-08T16:12:28 +2ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:12:28 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:12:28 +30ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:28 +1ms service=session.prompt status=started resolveTools INFO 2026-01-08T16:12:28 +0ms service=tool.registry status=started invalid INFO 2026-01-08T16:12:28 +0ms service=tool.registry status=started bash INFO 2026-01-08T16:12:28 +0ms service=bash-tool shell=/usr/bin/bash bash tool using shell INFO 2026-01-08T16:12:28 +0ms service=tool.registry status=started read INFO 2026-01-08T16:12:28 +1ms service=tool.registry status=started glob INFO 2026-01-08T16:12:28 +0ms service=tool.registry status=started grep INFO 2026-01-08T16:12:28 +0ms service=tool.registry status=started edit INFO 2026-01-08T16:12:28 +0ms service=tool.registry status=started write INFO 2026-01-08T16:12:28 +0ms service=tool.registry status=started task INFO 2026-01-08T16:12:28 +0ms service=tool.registry status=started webfetch INFO 2026-01-08T16:12:28 +0ms service=tool.registry status=started todowrite INFO 2026-01-08T16:12:28 +0ms service=tool.registry status=started todoread INFO 2026-01-08T16:12:28 +0ms service=tool.registry status=started skill INFO 2026-01-08T16:12:28 +0ms service=tool.registry status=completed duration=1 invalid INFO 2026-01-08T16:12:28 +0ms service=tool.registry status=completed duration=1 read INFO 2026-01-08T16:12:28 +0ms service=tool.registry status=completed duration=0 glob INFO 2026-01-08T16:12:28 +0ms service=tool.registry status=completed duration=0 grep INFO 2026-01-08T16:12:28 +0ms service=tool.registry status=completed duration=0 edit INFO 2026-01-08T16:12:28 +0ms service=tool.registry status=completed duration=0 write INFO 2026-01-08T16:12:28 +0ms service=tool.registry status=completed duration=0 webfetch INFO 2026-01-08T16:12:28 +0ms service=tool.registry status=completed duration=0 todowrite INFO 2026-01-08T16:12:28 +0ms service=tool.registry status=completed duration=0 todoread INFO 2026-01-08T16:12:28 +2ms service=tool.registry status=completed duration=3 bash INFO 2026-01-08T16:12:28 +1ms service=tool.registry status=completed duration=3 skill INFO 2026-01-08T16:12:28 +0ms service=tool.registry status=completed duration=3 task INFO 2026-01-08T16:12:28 +4ms service=session.prompt status=completed duration=8 resolveTools INFO 2026-01-08T16:12:28 +29ms service=session.processor process INFO 2026-01-08T16:12:28 +0ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build stream INFO 2026-01-08T16:12:28 +1ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build params={"temperature":1,"topP":0.95,"topK":64,"options":{}} params INFO 2026-01-08T16:12:28 +8ms service=bus type=session.status publishing INFO 2026-01-08T16:12:28 +13ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:28 +3ms service=bus type=session.updated publishing INFO 2026-01-08T16:12:28 +1ms service=bus type=session.diff publishing INFO 2026-01-08T16:12:29 +699ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:29 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:29 +56ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:29 +67ms service=bus type=message.part.updated publishing ERROR 2026-01-08T16:12:29 +117ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:12:29 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:12:29 +74ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:29 +41ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:29 +206ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:29 +180ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:30 +217ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:30 +96ms service=bus type=message.part.updated publishing ERROR 2026-01-08T16:12:30 +263ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:12:30 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:12:30 +29ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:30 +28ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:30 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:30 +3ms service=bus type=file.edited publishing INFO 2026-01-08T16:12:30 +1ms service=format file=/app/input/int_overflow.cpp formatting INFO 2026-01-08T16:12:30 +0ms service=format name=zig ext=.cpp checking INFO 2026-01-08T16:12:30 +0ms service=format name=uv format ext=.cpp checking INFO 2026-01-08T16:12:30 +0ms service=format name=terraform ext=.cpp checking INFO 2026-01-08T16:12:30 +0ms service=format name=standardrb ext=.cpp checking INFO 2026-01-08T16:12:30 +0ms service=format name=shfmt ext=.cpp checking INFO 2026-01-08T16:12:30 +0ms service=format name=ruff ext=.cpp checking INFO 2026-01-08T16:12:30 +1ms service=format name=rubocop ext=.cpp checking INFO 2026-01-08T16:12:30 +0ms service=format name=air ext=.cpp checking INFO 2026-01-08T16:12:30 +0ms service=format name=prettier ext=.cpp checking INFO 2026-01-08T16:12:30 +0ms service=format name=oxfmt ext=.cpp checking INFO 2026-01-08T16:12:30 +0ms service=format name=ocamlformat ext=.cpp checking INFO 2026-01-08T16:12:30 +0ms service=format name=nixfmt ext=.cpp checking INFO 2026-01-08T16:12:30 +0ms service=format name=mix ext=.cpp checking INFO 2026-01-08T16:12:30 +0ms service=format name=latexindent ext=.cpp checking INFO 2026-01-08T16:12:30 +0ms service=format name=ktlint ext=.cpp checking INFO 2026-01-08T16:12:30 +0ms service=format name=htmlbeautifier ext=.cpp checking INFO 2026-01-08T16:12:30 +0ms service=format name=gofmt ext=.cpp checking INFO 2026-01-08T16:12:30 +0ms service=format name=gleam ext=.cpp checking INFO 2026-01-08T16:12:30 +0ms service=format name=dart ext=.cpp checking INFO 2026-01-08T16:12:30 +0ms service=format name=clang-format ext=.cpp checking INFO 2026-01-08T16:12:30 +1ms service=format name=biome ext=.cpp checking INFO 2026-01-08T16:12:30 +1ms service=file.time sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 file=/app/input/int_overflow.cpp read INFO 2026-01-08T16:12:30 +0ms service=lsp file=/app/input/int_overflow.cpp touching file INFO 2026-01-08T16:12:30 +9ms service=bus type=message.part.updated publishing The bug in `int_overflow.cpp` is a signed integer overflow (lines 7-8). The product of `100000 * 50000` is 5,000,000,000 (5 billion), which exceeds the maximum value of a standard 32-bit signed `int` (approximately 2.14 billion). Signed integer overflow is Undefined Behavior in C++. **Fix:** Use a data type that is large enough to hold the result of the calculation, such as `long long` (or `int64_t` for explicit size). Since the result is stored in an `int` on line 12, the function should return a larger type, and `calculateTotal` should be modified to use the larger type for the multiplication. I have two options: 1. Change the return type of `calculateTotal` to `long long`. 2. Cast one of the operands to `long long` during multiplication. The return type of `calculateTotal` must be changed. **Edit 1: Change return type of `calculateTotal`** Original line 7: `00007| int calculateTotal(int pricePerUnit, int quantity) {` I will replace `int` with `long long`. `oldString`: `int calculateTotal` `newString`: `long long calculateTotal` INFO 2026-01-08T16:12:30 +4ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:30 +3ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:30 +1ms service=bus type=message.updated publishing |  Edit app/input/int_overflow.cpp INFO 2026-01-08T16:12:30 +33ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:30 +1ms service=bus type=session.status publishing INFO 2026-01-08T16:12:30 +0ms service=session.prompt step=20 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 loop INFO 2026-01-08T16:12:30 +70ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:30 +0ms service=session.prompt status=started resolveTools INFO 2026-01-08T16:12:30 +1ms service=tool.registry status=started invalid INFO 2026-01-08T16:12:30 +0ms service=tool.registry status=started bash INFO 2026-01-08T16:12:30 +0ms service=bash-tool shell=/usr/bin/bash bash tool using shell INFO 2026-01-08T16:12:30 +0ms service=tool.registry status=started read INFO 2026-01-08T16:12:30 +0ms service=tool.registry status=started glob INFO 2026-01-08T16:12:30 +0ms service=tool.registry status=started grep INFO 2026-01-08T16:12:30 +1ms service=tool.registry status=started edit INFO 2026-01-08T16:12:30 +0ms service=tool.registry status=started write INFO 2026-01-08T16:12:30 +1ms service=tool.registry status=started task INFO 2026-01-08T16:12:30 +0ms service=tool.registry status=started webfetch INFO 2026-01-08T16:12:30 +0ms service=tool.registry status=started todowrite INFO 2026-01-08T16:12:30 +1ms service=tool.registry status=started todoread INFO 2026-01-08T16:12:30 +0ms service=tool.registry status=started skill INFO 2026-01-08T16:12:30 +1ms service=tool.registry status=completed duration=4 invalid INFO 2026-01-08T16:12:30 +0ms service=tool.registry status=completed duration=4 read INFO 2026-01-08T16:12:30 +1ms service=tool.registry status=completed duration=5 glob INFO 2026-01-08T16:12:30 +0ms service=tool.registry status=completed duration=5 grep INFO 2026-01-08T16:12:30 +0ms service=tool.registry status=completed duration=4 edit INFO 2026-01-08T16:12:30 +1ms service=tool.registry status=completed duration=5 write INFO 2026-01-08T16:12:30 +1ms service=tool.registry status=completed duration=5 webfetch INFO 2026-01-08T16:12:30 +0ms service=tool.registry status=completed duration=5 todowrite INFO 2026-01-08T16:12:30 +0ms service=tool.registry status=completed duration=4 todoread INFO 2026-01-08T16:12:30 +0ms service=tool.registry status=completed duration=7 bash INFO 2026-01-08T16:12:30 +0ms service=tool.registry status=completed duration=4 skill INFO 2026-01-08T16:12:30 +0ms service=tool.registry status=completed duration=5 task INFO 2026-01-08T16:12:30 +4ms service=session.prompt status=completed duration=12 resolveTools INFO 2026-01-08T16:12:30 +4ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:30 +2ms service=bus type=session.updated publishing INFO 2026-01-08T16:12:30 +1ms service=bus type=session.diff publishing INFO 2026-01-08T16:12:30 +15ms service=session.processor process INFO 2026-01-08T16:12:30 +1ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build stream INFO 2026-01-08T16:12:30 +1ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-preview-09-2025 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 small=false agent=build params={"temperature":1,"topP":0.95,"topK":64,"options":{}} params INFO 2026-01-08T16:12:30 +16ms service=bus type=session.status publishing INFO 2026-01-08T16:12:31 +617ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:31 +1ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:31 +63ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:31 +60ms service=bus type=message.part.updated publishing ERROR 2026-01-08T16:12:31 +60ms service=acp-command promise={} reason=NotFoundError Unhandled rejection ERROR 2026-01-08T16:12:31 +0ms service=default e=NotFoundError rejection INFO 2026-01-08T16:12:31 +46ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:31 +92ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:31 +65ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:31 +218ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:31 +3ms service=bus type=message.part.updated publishing INFO 2026-01-08T16:12:31 +4ms service=bus type=message.updated publishing **Edit 2: Cast to `long long` in multiplication** Now that the function returns `long long`, the multiplication should be performed with at least one `long long` operand to avoid intermediate overflow. Original line 8: `00008| return pricePerUnit * quantity; // Can overflow!` I will cast `pricePerUnit` to `long long`. `oldString`: `pricePerUnit * quantity` `newString`: `(long long)pricePerUnit * quantity INFO 2026-01-08T16:12:31 +27ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:31 +0ms service=bus type=session.status publishing INFO 2026-01-08T16:12:31 +0ms service=session.prompt step=21 sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 loop INFO 2026-01-08T16:12:31 +85ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:31 +1ms service=bus type=message.updated publishing INFO 2026-01-08T16:12:31 +1ms service=bus type=session.updated publishing INFO 2026-01-08T16:12:31 +0ms service=bus type=session.diff publishing INFO 2026-01-08T16:12:32 +12ms service=session.prompt sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 exiting loop INFO 2026-01-08T16:12:32 +1ms service=session.compaction pruning INFO 2026-01-08T16:12:32 +6ms service=session.prompt sessionID=ses_4619f328dffeoQjXZ8RJ16tIX1 cancel INFO 2026-01-08T16:12:32 +1ms service=bus type=session.status publishing INFO 2026-01-08T16:12:32 +0ms service=bus type=session.idle publishing INFO 2026-01-08T16:12:32 +12ms service=default directory=/app/input disposing instance INFO 2026-01-08T16:12:32 +1ms service=state key=/app/input waiting for state disposal to complete INFO 2026-01-08T16:12:32 +5ms service=state key=/app/input state disposal completed --- Initial command finished (exit code: 0) --- --- no_shell=true, exiting container without starting shell --- Command execution complete. Container has exited. Session has been cleaned up.