/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_20251025_150024/task9_cpp_footguns/openrouter-google-gemini-2.5-flash-lite-preview-09-2025/workspace to /app No project_name provided - skipping configuration directory setup. Session created successfully! Session ID: 0b0a9164 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 122 models to OpenCode configuration Added openrouter standard provider with 347 models to OpenCode configuration Set default model to openrouter/google/gemini-2.5-flash-lite-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 `input/` 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 `input/`). 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 2025-10-25T16:44:32 +3496ms service=default version=0.15.11 args=["run","--print-logs"] opencode INFO 2025-10-25T16:44:32 +42ms service=project directory=/app/input fromDirectory INFO 2025-10-25T16:44:32 +63ms service=storage index=0 running migration ERROR 2025-10-25T16:44:32 +38ms service=storage error=ENOENT: no such file or directory, open '/home/cubbi/.local/share/opencode/project' index=0 failed to run migration INFO 2025-10-25T16:44:32 +102ms service=config path=/home/cubbi/.config/opencode/config.json loading INFO 2025-10-25T16:44:33 +1044ms service=config path=/home/cubbi/.config/opencode/opencode.json loading INFO 2025-10-25T16:44:33 +14ms service=config path=/home/cubbi/.config/opencode/opencode.jsonc loading INFO 2025-10-25T16:44:33 +120ms service=bun cmd=["/opt/node/lib/node_modules/opencode-ai/node_modules/opencode-linux-x64/bin/opencode","add","@opencode-ai/plugin@0.15.11","--exact"] cwd=/home/cubbi/.config/opencode running INFO 2025-10-25T16:44:33 +265ms service=plugin path=opencode-copilot-auth@0.0.3 loading plugin INFO 2025-10-25T16:44:33 +21ms service=bun pkg=opencode-copilot-auth version=0.0.3 installing package using Bun's default registry resolution INFO 2025-10-25T16:44:33 +2ms 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@0.0.3"] cwd=/home/cubbi/.cache/opencode running INFO 2025-10-25T16:44:34 +419ms service=bun code=0 stdout=bun add v1.3.0 (b0a6feca) installed opencode-copilot-auth@0.0.3 1 package installed [335.00ms] stderr=Resolving dependencies Resolved, downloaded and extracted [4] Saved lockfile done INFO 2025-10-25T16:44:34 +55ms service=plugin path=opencode-anthropic-auth@0.0.2 loading plugin INFO 2025-10-25T16:44:34 +75ms service=bun pkg=opencode-anthropic-auth version=0.0.2 installing package using Bun's default registry resolution INFO 2025-10-25T16:44:34 +2ms 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@0.0.2"] cwd=/home/cubbi/.cache/opencode running INFO 2025-10-25T16:44:35 +1359ms service=bun code=0 stdout=bun add v1.3.0 (b0a6feca) installed @opencode-ai/plugin@0.15.11 3 packages installed [2.11s] stderr=Resolving dependencies Resolved, downloaded and extracted [12] Saved lockfile done INFO 2025-10-25T16:44:36 +808ms service=bun code=0 stdout=bun add v1.3.0 (b0a6feca) + opencode-copilot-auth@0.0.3 installed opencode-anthropic-auth@0.0.2 14 packages installed [2.08s] stderr=Resolving dependencies Resolved, downloaded and extracted [50] Saved lockfile done INFO 2025-10-25T16:44:37 +518ms service=bus type=* subscribing INFO 2025-10-25T16:44:37 +4ms service=bus type=session.updated subscribing INFO 2025-10-25T16:44:37 +2ms service=bus type=message.updated subscribing INFO 2025-10-25T16:44:37 +2ms service=bus type=message.part.updated subscribing INFO 2025-10-25T16:44:37 +0ms service=format init INFO 2025-10-25T16:44:37 +1ms service=bus type=file.edited subscribing INFO 2025-10-25T16:44:37 +47ms service=session id=ses_5e3be0661ffeg4k8Zcmrpso7M7 version=0.15.11 projectID=global directory=/app/input title=New session - 2025-10-25T16:44:37.150Z time={"created":1761410677150,"updated":1761410677150} created INFO 2025-10-25T16:44:37 +50ms service=lsp serverIds=deno, typescript, vue, eslint, gopls, ruby-lsp, pyright, elixir-ls, zls, csharp, rust, clangd, svelte, astro, jdtls enabled LSP servers INFO 2025-10-25T16:44:37 +17ms service=bus type=session.updated publishing INFO 2025-10-25T16:44:37 +37ms service=bus type=message.part.updated subscribing 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service=bun pkg=@ai-sdk/openai-compatible version=latest installing package using Bun's default registry resolution INFO 2025-10-25T16:44:37 +5ms 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","@ai-sdk/openai-compatible@latest"] cwd=/home/cubbi/.cache/opencode running INFO 2025-10-25T16:44:39 +1837ms service=bun code=0 stdout=bun add v1.3.0 (b0a6feca) + opencode-anthropic-auth@0.0.2 + opencode-copilot-auth@0.0.3 installed @ai-sdk/openai-compatible@1.0.22 21 packages installed [1.74s] stderr=Resolving dependencies Resolved, downloaded and extracted [26] Saved lockfile done INFO 2025-10-25T16:44:41 +1392ms service=provider status=completed duration=3240 providerID=openrouter getSDK INFO 2025-10-25T16:44:41 +42ms service=provider providerID=openrouter modelID=google/gemini-2.5-flash-lite-preview-09-2025 found INFO 2025-10-25T16:44:41 +5ms service=session.lock sessionID=ses_5e3be0661ffeg4k8Zcmrpso7M7 locked INFO 2025-10-25T16:44:41 +1ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 sessionID=ses_5e3be0661ffeg4k8Zcmrpso7M7 locking INFO 2025-10-25T16:44:41 +228ms service=provider providerID=openrouter modelID=anthropic/claude-3.5-haiku getModel INFO 2025-10-25T16:44:41 +3ms service=provider status=started providerID=openrouter getSDK INFO 2025-10-25T16:44:41 +2ms service=provider status=completed duration=3 providerID=openrouter getSDK INFO 2025-10-25T16:44:41 +59ms service=provider providerID=openrouter modelID=anthropic/claude-3.5-haiku found INFO 2025-10-25T16:44:41 +5ms service=bus type=message.updated publishing INFO 2025-10-25T16:44:41 +179ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 process INFO 2025-10-25T16:44:41 +104ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start part INFO 2025-10-25T16:44:42 +1251ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 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type=text-end part INFO 2025-10-25T16:44:43 +9ms service=bus type=message.part.updated publishing  I understand. I need to fix one subtle bug in each of the eight provided C++ files located in the `input/` directory. The fixes must ensure the code compiles cleanly with strict flags (`-Wall -Wextra -Werror`), passes sanitizer checks (ASan/UBSan), and produces the correct output. Since I cannot ask questions, I must rely on my analysis of the code to determine the expected behavior and the nature of the bug. I will start by listing the files to confirm their presence and then proceed to analyze and fix them one by one, using the `bash` tool to compile and test where necessary, and the `read`/`edit` tools to apply fixes. First, I will list the files in the `input/` directory.  INFO 2025-10-25T16:44:43 +89ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-result part INFO 2025-10-25T16:44:43 +35ms service=bus type=message.part.updated publishing |  List app/input INFO 2025-10-25T16:44:43 +25ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish-step part INFO 2025-10-25T16:44:43 +55ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:43 +12ms service=bus type=message.updated publishing INFO 2025-10-25T16:44:43 +7ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish part INFO 2025-10-25T16:44:43 +11ms service=bus type=message.updated publishing INFO 2025-10-25T16:44:43 +49ms service=bus type=message.updated publishing INFO 2025-10-25T16:44:43 +14ms service=bus type=message.updated publishing INFO 2025-10-25T16:44:43 +102ms service=bus type=message.updated publishing INFO 2025-10-25T16:44:44 +245ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 process INFO 2025-10-25T16:44:44 +15ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start part INFO 2025-10-25T16:44:44 +591ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start-step part INFO 2025-10-25T16:44:44 +45ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:44 +9ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-start part INFO 2025-10-25T16:44:44 +10ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:44:44 +17ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:44 +0ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:44:44 +15ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:44 +36ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:44:44 +4ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:44 +32ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:44:44 +15ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:44 +57ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-start part INFO 2025-10-25T16:44:44 +31ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:45 +29ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-delta part INFO 2025-10-25T16:44:45 +1ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-end part INFO 2025-10-25T16:44:45 +15ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-call part INFO 2025-10-25T16:44:45 +2ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:45 +10ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-end part INFO 2025-10-25T16:44:45 +8ms service=bus type=message.part.updated publishing  I have confirmed the presence of all eight files. I will now proceed with the analysis and fixing of each file sequentially. I will use the `bash` tool to compile and run the code with the specified flags and sanitizers to verify the fix for each file before moving to the next. I will start with `virtual_destructor.cpp`. I need to read the file first to understand its structure and identify the bug.  INFO 2025-10-25T16:44:45 +34ms service=file.time sessionID=ses_5e3be0661ffeg4k8Zcmrpso7M7 file=/app/input/virtual_destructor.cpp read INFO 2025-10-25T16:44:45 +16ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-result part INFO 2025-10-25T16:44:45 +20ms service=bus type=message.part.updated publishing |  Read app/input/virtual_destructor.cpp INFO 2025-10-25T16:44:45 +12ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish-step part INFO 2025-10-25T16:44:45 +15ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:45 +14ms service=bus type=message.updated publishing INFO 2025-10-25T16:44:45 +6ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish part INFO 2025-10-25T16:44:45 +6ms service=bus type=message.updated publishing INFO 2025-10-25T16:44:45 +58ms service=lsp.server downloading clangd from GitHub releases INFO 2025-10-25T16:44:45 +58ms service=bus type=message.updated publishing INFO 2025-10-25T16:44:45 +17ms service=bus type=message.updated publishing INFO 2025-10-25T16:44:45 +207ms service=bus type=message.updated publishing INFO 2025-10-25T16:44:45 +44ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 process INFO 2025-10-25T16:44:45 +13ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start part INFO 2025-10-25T16:44:49 +3473ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start-step part INFO 2025-10-25T16:44:49 +246ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:49 +1ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-start part INFO 2025-10-25T16:44:49 +12ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:44:49 +33ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:49 +4ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:44:49 +7ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:49 +15ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:44:49 +1ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:49 +0ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:44:49 +33ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:49 +13ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-start part INFO 2025-10-25T16:44:49 +18ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:49 +11ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-delta part INFO 2025-10-25T16:44:49 +9ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-end part INFO 2025-10-25T16:44:49 +17ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-call part INFO 2025-10-25T16:44:49 +7ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:49 +14ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-end part INFO 2025-10-25T16:44:49 +36ms service=bus type=message.part.updated publishing  The bug in `virtual_destructor.cpp` is clearly identified on line 12: the destructor in the base class `Plugin` is not declared as `virtual`. This leads to undefined behavior (potential memory leaks or double-free issues) when deleting a derived class object (`ImagePlugin`) through a base class pointer (`Plugin*`). **Fix:** Add the `virtual` keyword to the destructor of `Plugin`. I will now apply the fix.  INFO 2025-10-25T16:44:49 +163ms service=bus type=file.edited publishing INFO 2025-10-25T16:44:49 +26ms service=format file=/app/input/virtual_destructor.cpp formatting INFO 2025-10-25T16:44:49 +19ms service=format name=zig ext=.cpp checking INFO 2025-10-25T16:44:49 +9ms service=format name=standardrb ext=.cpp checking INFO 2025-10-25T16:44:49 +0ms service=format name=ruff ext=.cpp checking INFO 2025-10-25T16:44:49 +0ms service=format name=rubocop ext=.cpp checking INFO 2025-10-25T16:44:49 +1ms service=format name=prettier ext=.cpp checking INFO 2025-10-25T16:44:49 +0ms service=format name=mix ext=.cpp checking INFO 2025-10-25T16:44:49 +1ms service=format name=ktlint ext=.cpp checking INFO 2025-10-25T16:44:49 +0ms service=format name=htmlbeautifier ext=.cpp checking INFO 2025-10-25T16:44:49 +1ms service=format name=gofmt ext=.cpp checking INFO 2025-10-25T16:44:49 +0ms service=format name=clang-format ext=.cpp checking INFO 2025-10-25T16:44:49 +56ms service=format name=biome ext=.cpp checking INFO 2025-10-25T16:44:49 +38ms service=file.time sessionID=ses_5e3be0661ffeg4k8Zcmrpso7M7 file=/app/input/virtual_destructor.cpp read INFO 2025-10-25T16:44:49 +35ms service=lsp.server downloading clangd from GitHub releases ERROR 2025-10-25T16:44:50 +220ms service=lsp.server Failed to extract clangd binary ERROR 2025-10-25T16:44:54 +4182ms service=lsp.server Failed to extract clangd binary INFO 2025-10-25T16:44:54 +24ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-result part INFO 2025-10-25T16:44:54 +11ms service=bus type=message.part.updated publishing |  Edit app/input/virtual_destructor.cpp INFO 2025-10-25T16:44:54 +20ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish-step part INFO 2025-10-25T16:44:54 +37ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:54 +14ms service=bus type=message.updated publishing INFO 2025-10-25T16:44:54 +2ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish part INFO 2025-10-25T16:44:54 +6ms service=bus type=message.updated publishing INFO 2025-10-25T16:44:54 +31ms service=bus type=message.updated publishing INFO 2025-10-25T16:44:54 +13ms service=bus type=message.updated publishing INFO 2025-10-25T16:44:54 +152ms service=bus type=message.updated publishing INFO 2025-10-25T16:44:54 +65ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 process INFO 2025-10-25T16:44:54 +29ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start part INFO 2025-10-25T16:44:55 +1077ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start-step part INFO 2025-10-25T16:44:55 +46ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:55 +9ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-start part INFO 2025-10-25T16:44:55 +9ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:44:55 +15ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:55 +8ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:44:55 +4ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:55 +17ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:44:55 +12ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:55 +15ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:44:55 +12ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:55 +8ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:44:55 +9ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:55 +5ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:44:55 +9ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:55 +44ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:44:55 +20ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:56 +7ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-start part INFO 2025-10-25T16:44:56 +187ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:56 +108ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-delta part INFO 2025-10-25T16:44:56 +8ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-end part INFO 2025-10-25T16:44:56 +9ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-call part INFO 2025-10-25T16:44:56 +6ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:56 +5ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-end part INFO 2025-10-25T16:44:56 +5ms service=bus type=message.part.updated publishing  The fix has been applied. Now I will compile and run the code with strict flags and sanitizers to verify correctness. I will use `g++` with `-Wall -Wextra -Werror -fsanitize=address,undefined -fno-omit-frame-pointer -std=c++17` for compilation and then execute the resulting binary. If compilation fails, I will adjust the compilation command or check for other issues. Since this is a C++ file, I'll assume a standard compilation process. Compilation command: `g++ -Wall -Wextra -Werror -fsanitize=address,undefined -fno-omit-frame-pointer -std=c++17 virtual_destructor.cpp -o virtual_destructor_test` Execution command: `./virtual_destructor_test`  INFO 2025-10-25T16:44:56 +61ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:56 +23ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-result part INFO 2025-10-25T16:44:56 +14ms service=bus type=message.part.updated publishing |  Bash g++ -Wall -Wextra -Werror -fsanitize=address,undefined -fno-omit-frame-pointer -std=c++17 /app/input/virtual_destructor.cpp -o virtual_destructor_test && ./virtual_destructor_test /bin/sh: 1: g++: Permission denied INFO 2025-10-25T16:44:56 +9ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish-step part INFO 2025-10-25T16:44:56 +25ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:56 +11ms service=bus type=message.updated publishing INFO 2025-10-25T16:44:56 +6ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish part INFO 2025-10-25T16:44:56 +12ms service=bus type=message.updated publishing INFO 2025-10-25T16:44:56 +81ms service=bus type=message.updated publishing INFO 2025-10-25T16:44:56 +26ms service=bus type=message.updated publishing INFO 2025-10-25T16:44:56 +369ms service=bus type=message.updated publishing INFO 2025-10-25T16:44:57 +64ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 process INFO 2025-10-25T16:44:57 +21ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start part INFO 2025-10-25T16:44:57 +574ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start-step part INFO 2025-10-25T16:44:57 +19ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:57 +7ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-start part INFO 2025-10-25T16:44:57 +7ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:44:57 +4ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:57 +13ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:44:57 +6ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:57 +161ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:44:57 +2ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:57 +143ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:44:57 +5ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:58 +234ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:44:58 +10ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:58 +177ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:44:58 +4ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:58 +150ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:44:58 +9ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:58 +63ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:44:58 +5ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:58 +79ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-start part INFO 2025-10-25T16:44:58 +20ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:58 +12ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-delta part INFO 2025-10-25T16:44:58 +9ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-end part INFO 2025-10-25T16:44:58 +5ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-call part INFO 2025-10-25T16:44:58 +3ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:58 +17ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-end part INFO 2025-10-25T16:44:58 +8ms service=bus type=message.part.updated publishing  It seems I do not have permission to execute `g++` directly, or it's not in the PATH in a way that allows direct execution without specifying the full path or using a shell that handles it better. I will try to use the full path for `g++` if available, or assume the environment supports standard compilation via `bash`. Given the output, I will try again, assuming the environment might require a different approach or that the initial attempt failed due to environment setup rather than the command itself. I will try to use `/usr/bin/g++` if available, or just rely on `g++` again, as it's common in these environments. I will also check if I can run the compilation command without the sanitizer flags first to see if the code compiles at all, but the requirement is to pass sanitizers. I will stick to the required command structure. Let's re-run the compilation/execution, assuming the environment might have fixed itself or that the initial failure was transient. If it fails again, I will try to find the compiler path. Since I cannot ask for help, I must assume the environment is capable of running standard commands. I will try again with the full required command. If it fails again, I will try to find the compiler path using `which g++`. Let's try to find the compiler first.  INFO 2025-10-25T16:44:58 +23ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-result part INFO 2025-10-25T16:44:58 +13ms service=bus type=message.part.updated publishing |  Bash which g++ INFO 2025-10-25T16:44:58 +5ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish-step part INFO 2025-10-25T16:44:58 +20ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:58 +1ms service=bus type=message.updated publishing INFO 2025-10-25T16:44:58 +7ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish part INFO 2025-10-25T16:44:58 +4ms service=bus type=message.updated publishing INFO 2025-10-25T16:44:58 +19ms service=bus type=message.updated publishing INFO 2025-10-25T16:44:58 +7ms service=bus type=message.updated publishing INFO 2025-10-25T16:44:59 +226ms service=bus type=message.updated publishing INFO 2025-10-25T16:44:59 +55ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 process INFO 2025-10-25T16:44:59 +12ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start part INFO 2025-10-25T16:44:59 +597ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start-step part INFO 2025-10-25T16:44:59 +35ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:59 +3ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-start part INFO 2025-10-25T16:44:59 +7ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:44:59 +4ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:59 +11ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:44:59 +1ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:44:59 +107ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:44:59 +1ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:00 +221ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:00 +13ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:00 +64ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:00 +4ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:00 +162ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-start part INFO 2025-10-25T16:45:00 +15ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:00 +32ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-delta part INFO 2025-10-25T16:45:00 +1ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-end part INFO 2025-10-25T16:45:00 +1ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-call part INFO 2025-10-25T16:45:00 +4ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:00 +13ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:00 +15ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-end part INFO 2025-10-25T16:45:00 +7ms service=bus type=message.part.updated publishing  The `which g++` command returned nothing, suggesting `g++` might not be directly accessible or installed in a standard location, or the environment is restricted. However, the problem description implies a standard C++ environment where compilation is possible. I will proceed by using the full path `/usr/bin/g++` which is common on Linux systems, as a strong guess for the compiler location, and re-run the test. If that fails, I will try compiling without sanitizers just to confirm the fix works for compilation/output, and then report the sanitizer issue if it persists. Let's try `/usr/bin/g++`.  INFO 2025-10-25T16:45:00 +21ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-result part INFO 2025-10-25T16:45:00 +7ms service=bus type=message.part.updated publishing |  Bash /usr/bin/g++ -Wall -Wextra -Werror -fsanitize=address,undefined -fno-omit-frame-pointer -std=c++17 /app/input/virtual_destructor.cpp -o virtual_destructor_test && ./virtual_destructor_test /bin/sh: 1: /usr/bin/g++: not found INFO 2025-10-25T16:45:00 +10ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish-step part INFO 2025-10-25T16:45:00 +15ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:00 +13ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:00 +2ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish part INFO 2025-10-25T16:45:00 +5ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:00 +43ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:00 +10ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:00 +235ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:00 +68ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 process INFO 2025-10-25T16:45:00 +5ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start part INFO 2025-10-25T16:45:01 +873ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start-step part INFO 2025-10-25T16:45:01 +9ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:01 +2ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-start part INFO 2025-10-25T16:45:01 +2ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:01 +11ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:02 +205ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:02 +3ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:02 +127ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:02 +3ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:02 +127ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:02 +2ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:02 +145ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:02 +6ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:02 +77ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:02 +11ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:02 +202ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:02 +4ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:03 +781ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-start part INFO 2025-10-25T16:45:03 +12ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:03 +8ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-delta part INFO 2025-10-25T16:45:03 +1ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-end part INFO 2025-10-25T16:45:03 +7ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-call part INFO 2025-10-25T16:45:03 +3ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:03 +19ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-end part INFO 2025-10-25T16:45:03 +3ms service=bus type=message.part.updated publishing  The environment seems to lack a standard C++ compiler (`g++`) accessible via common paths or commands, which prevents me from running the required compilation and sanitizer checks for verification. However, the bug in `virtual_destructor.cpp` is a textbook C++ error (missing virtual destructor), and the fix is certain based on the code analysis. **File: `virtual_destructor.cpp`** **Bug:** Missing `virtual` keyword on the base class destructor (`Plugin::~Plugin()`). **Fix Applied:** Added `virtual` to line 12. Since I cannot verify compilation/sanitizers, I must proceed to the next file based on the certainty of the fix. Next file: `reference_to_temporary.cpp`. I will read its content.  INFO 2025-10-25T16:45:03 +11ms service=file.time sessionID=ses_5e3be0661ffeg4k8Zcmrpso7M7 file=/app/input/reference_to_temporary.cpp read INFO 2025-10-25T16:45:03 +5ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-result part INFO 2025-10-25T16:45:03 +20ms service=bus type=message.part.updated publishing |  Read app/input/reference_to_temporary.cpp INFO 2025-10-25T16:45:03 +1ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish-step part INFO 2025-10-25T16:45:03 +26ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:03 +10ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:03 +3ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish part INFO 2025-10-25T16:45:03 +6ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:03 +16ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:03 +7ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:03 +175ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:03 +58ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 process INFO 2025-10-25T16:45:03 +23ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start part INFO 2025-10-25T16:45:04 +653ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start-step part INFO 2025-10-25T16:45:04 +30ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:04 +3ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-start part INFO 2025-10-25T16:45:04 +9ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:04 +1ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:04 +10ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:04 +1ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:04 +134ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:04 +5ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:04 +17ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:04 +3ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:04 +145ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-start part INFO 2025-10-25T16:45:04 +19ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:04 +13ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-delta part INFO 2025-10-25T16:45:04 +5ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-end part INFO 2025-10-25T16:45:04 +2ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-call part INFO 2025-10-25T16:45:05 +2ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:05 +25ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-end part INFO 2025-10-25T16:45:05 +3ms service=bus type=message.part.updated publishing  The bug in `reference_to_temporary.cpp` is a classic dangling reference issue on lines 8-10. The function `getAppName` returns a `const std::string&` to a temporary `std::string` object created inside the function, which is destroyed immediately after the function returns. **Fix:** Change the return type of `getAppName` to return by value (`std::string`) instead of by const reference (`const std::string&`). I will apply the fix.  INFO 2025-10-25T16:45:05 +29ms service=bus type=file.edited publishing INFO 2025-10-25T16:45:05 +2ms service=format file=/app/input/reference_to_temporary.cpp formatting INFO 2025-10-25T16:45:05 +1ms service=format name=zig ext=.cpp checking INFO 2025-10-25T16:45:05 +2ms service=format name=standardrb ext=.cpp checking INFO 2025-10-25T16:45:05 +0ms service=format name=ruff ext=.cpp checking INFO 2025-10-25T16:45:05 +0ms service=format name=rubocop ext=.cpp checking INFO 2025-10-25T16:45:05 +0ms service=format name=prettier ext=.cpp checking INFO 2025-10-25T16:45:05 +1ms service=format name=mix ext=.cpp checking INFO 2025-10-25T16:45:05 +2ms service=format name=ktlint ext=.cpp checking INFO 2025-10-25T16:45:05 +0ms service=format name=htmlbeautifier ext=.cpp checking INFO 2025-10-25T16:45:05 +0ms service=format name=gofmt ext=.cpp checking INFO 2025-10-25T16:45:05 +0ms service=format name=clang-format ext=.cpp checking INFO 2025-10-25T16:45:05 +0ms service=format name=biome ext=.cpp checking INFO 2025-10-25T16:45:05 +4ms service=file.time sessionID=ses_5e3be0661ffeg4k8Zcmrpso7M7 file=/app/input/reference_to_temporary.cpp read INFO 2025-10-25T16:45:05 +15ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-result part INFO 2025-10-25T16:45:05 +5ms service=bus type=message.part.updated publishing |  Edit app/input/reference_to_temporary.cpp INFO 2025-10-25T16:45:05 +9ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish-step part INFO 2025-10-25T16:45:05 +17ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:05 +52ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:05 +1ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish part INFO 2025-10-25T16:45:05 +12ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:05 +116ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:05 +65ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:05 +197ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:05 +85ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 process INFO 2025-10-25T16:45:05 +14ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start part INFO 2025-10-25T16:45:06 +622ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start-step part INFO 2025-10-25T16:45:06 +18ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:06 +1ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-start part INFO 2025-10-25T16:45:06 +6ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:06 +1ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:06 +2ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:06 +6ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:06 +0ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:06 +1ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:06 +57ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-start part INFO 2025-10-25T16:45:06 +16ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:06 +9ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-delta part INFO 2025-10-25T16:45:06 +4ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-end part INFO 2025-10-25T16:45:06 +2ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-call part INFO 2025-10-25T16:45:06 +6ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:06 +16ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-end part INFO 2025-10-25T16:45:06 +4ms service=bus type=message.part.updated publishing  The fix is applied. Proceeding to the next file: `iterator_invalidation.cpp`. I will read its content.  INFO 2025-10-25T16:45:06 +50ms service=file.time sessionID=ses_5e3be0661ffeg4k8Zcmrpso7M7 file=/app/input/iterator_invalidation.cpp read INFO 2025-10-25T16:45:06 +11ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-result part INFO 2025-10-25T16:45:06 +6ms service=bus type=message.part.updated publishing |  Read app/input/iterator_invalidation.cpp INFO 2025-10-25T16:45:06 +14ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish-step part INFO 2025-10-25T16:45:06 +14ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:06 +12ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:06 +5ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish part INFO 2025-10-25T16:45:06 +13ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:06 +62ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:06 +3ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:06 +173ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:06 +55ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 process INFO 2025-10-25T16:45:06 +11ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start part INFO 2025-10-25T16:45:07 +1053ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start-step part INFO 2025-10-25T16:45:07 +12ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:07 +1ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-start part INFO 2025-10-25T16:45:07 +11ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:07 +0ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:08 +74ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:08 +11ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:08 +88ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:08 +3ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:08 +125ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:08 +6ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:08 +122ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:08 +3ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:08 +129ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:08 +5ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:08 +129ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:08 +1ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:08 +115ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:08 +10ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:08 +117ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:08 +3ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:09 +180ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:09 +1ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:09 +199ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:09 +1ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:09 +183ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:09 +8ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:09 +207ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:09 +0ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:09 +265ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:09 +7ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:10 +216ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:10 +2ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:10 +192ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:10 +2ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:10 +194ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:10 +2ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:10 +142ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:10 +0ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:10 +202ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:10 +5ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:11 +178ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:11 +4ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:11 +202ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:11 +5ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:11 +165ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:11 +1ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:11 +159ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:11 +4ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:11 +196ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:11 +10ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:12 +213ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:12 +24ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:12 +242ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:12 +14ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:12 +23ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:12 +11ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:12 +122ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:12 +18ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:12 +180ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:12 +9ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:12 +172ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:12 +11ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:13 +166ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:13 +7ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:13 +132ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:13 +7ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:13 +112ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:13 +6ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:13 +138ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:13 +4ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:13 +158ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:13 +3ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:13 +142ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:13 +2ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:13 +168ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:13 +6ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:14 +217ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:14 +2ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:14 +191ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:14 +2ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:14 +184ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:14 +6ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:14 +124ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:14 +3ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:14 +186ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:14 +3ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:14 +130ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:14 +2ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:15 +158ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:15 +3ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:15 +157ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:15 +3ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:15 +147ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:15 +8ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:15 +189ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:15 +5ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:15 +172ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:15 +8ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:15 +134ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:15 +6ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:16 +122ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:16 +10ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:16 +138ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:16 +5ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:16 +180ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:16 +7ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:16 +138ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:16 +7ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:16 +121ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:16 +9ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:16 +170ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:16 +8ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:16 +143ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:17 +9ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:17 +149ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:17 +6ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:17 +153ms service=session.prompt 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session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:18 +7ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:18 +148ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:18 +2ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:18 +149ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:18 +5ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:18 +106ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:18 +15ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:18 +221ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:18 +3ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:20 +2136ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-start part INFO 2025-10-25T16:45:20 +10ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:20 +7ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-delta part INFO 2025-10-25T16:45:20 +3ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-end part INFO 2025-10-25T16:45:20 +2ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-call part INFO 2025-10-25T16:45:20 +4ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:20 +11ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-end part INFO 2025-10-25T16:45:20 +10ms service=bus type=message.part.updated publishing  The bug in `iterator_invalidation.cpp` is iterator invalidation on line 21. Calling `events_.push_back()` inside the loop invalidates iterators pointing into the vector, causing undefined behavior when `++it` is executed on line 00017. **Fix:** To safely modify a `std::vector` while iterating, one must use the return value of `push_back` (or `insert`) to update the iterator, or use a loop structure that correctly handles iterator advancement after insertion. The standard way to handle this when inserting is to reassign the iterator to the result of the insertion, or use a `while` loop structure that manually advances the iterator only when no insertion occurs. Since the goal is to process all events, including newly added ones, the loop must continue until the end is reached, and the iterator must be correctly advanced after an insertion. I will change the `for` loop to a `while` loop structure that correctly handles iterator advancement after insertion. Original loop structure: ```cpp 00016| for (auto it = events_.begin(); it != events_.end(); ++it) { 00017| std::cout << "Event: " << *it << std::endl; 00019| // Add derived event during iteration 00021| if (*it == "user_login") { 00022| events_.push_back("log_analytics"); // Invalidates iterator! 00023| } 00024| } ``` Corrected loop structure: ```cpp for (auto it = events_.begin(); it != events_.end(); /* no increment here */) { std::cout << "Event: " << *it << std::endl; // Add derived event during iteration if (*it == "user_login") { events_.push_back("log_analytics"); // Iterator is invalidated, but we don't advance it yet. // The next iteration will check the new end() against the old iterator, which is now invalid. // The correct approach when inserting is to let the loop condition handle the end check, // but we must advance 'it' manually if no insertion happens, or re-evaluate 'it' if insertion happens. // Since push_back invalidates, we must rely on the loop condition re-evaluating against the new end(). // However, if we insert, we must NOT advance 'it' because the element *it points to is still valid, // and the new element is at it+1. If we don't insert, we must advance 'it'. } // If we insert, the iterator 'it' is invalidated. The loop condition 'it != events_.end()' will re-evaluate. // If we don't insert, we must advance 'it'. // The safest way is to use the iterator returned by insert, but push_back doesn't return one. // For push_back, if we insert, we must NOT advance 'it' because the element *it is still the one we just processed, // and the loop condition will check against the new end(). If we don't insert, we advance. if (*it != "user_login") { // Simplified logic: only advance if we didn't insert (i.e., the condition wasn't met) ++it; } // Wait, this is still tricky. If we insert, the loop condition will check against the new end(). // If we insert, the element *it is still the one we just processed, and the next element is at it+1. // If we don't insert, we advance. // Let's use the standard pattern for insertion: // If we insert, the iterator is invalidated. We must rely on the loop condition re-evaluating. // If we don't insert, we advance. if (*it == "user_login") { events_.push_back("log_analytics"); // Do not advance 'it'. The loop condition will check against the new end(). // The next iteration will process the element *after* the one we just processed, which is now at it+1. // Wait, if we insert, the element at 'it' is still the one we just processed. The next element to process is the one *after* it. // If we insert, the iterator 'it' is invalidated. We must rely on the loop condition re-evaluating. // The element we just processed is still *it. The next element is now at it+1. // If we don't advance, the next loop iteration will process *it again, leading to an infinite loop if we keep inserting. // Correct pattern for insertion: If insertion happens, the iterator is invalidated. We must rely on the loop condition re-evaluating. // If we insert, we must NOT advance 'it' because the element at 'it' is still the one we just processed, and the loop condition will check against the new end(). // If we don't insert, we advance. // Let's re-read the standard fix: If insertion occurs, the iterator is invalidated. We must rely on the loop condition re-evaluating. // If we insert, we must NOT advance 'it' because the element at 'it' is still the one we just processed, and the loop condition will check against the new end(). // If we don't insert, we advance. // The simplest fix that works for push_back invalidation is to use a while loop and only advance if no insertion occurred. } else { ++it; } } ``` This logic is flawed for `push_back` because `it` is invalidated. The correct approach when using `push_back` is to check if the element was processed, and if so, advance the iterator *only if no insertion happened*. Let's use the standard C++ idiom for this specific case: only advance the iterator if no insertion occurred. ```cpp 00016| for (auto it = events_.begin(); it != events_.end(); /* no increment */) { 00017| std::cout << "Event: " << *it << std::endl; 00019| // Add derived event during iteration 00021| if (*it == "user_login") { 00022| events_.push_back("log_analytics"); // Invalidates iterator! 00023| } else { 00024| ++it; // Only advance if no insertion happened 00025| } 00026| } ``` This is still problematic because if `push_back` happens, `it` is invalidated, and the next loop iteration will check `it != events_.end()`. If the vector grew, `events_.end()` is now different, but `it` is invalid. The safest fix is to use `std::vector::erase` or `std::list` if we were allowed to change containers, but we must fix the iterator logic for `std::vector`. The correct idiom for `std::vector` when inserting elements that need to be processed in the same loop is to use a `while` loop and only advance the iterator if no insertion occurred, relying on the fact that `push_back` invalidates *all* iterators, but the loop condition will re-evaluate against the new `end()`. If we insert, we must not advance `it` because the element at `it` is still the one we just processed, and the next element to process is now at `it+1`. If we don't insert, we advance `it`. Let's rewrite lines 16-26 using a `while` loop structure that handles the invalidation correctly by only advancing when no insertion happens. ```cpp 00016| auto it = events_.begin(); 00017| while (it != events_.end()) { 00018| std::cout << "Event: " << *it << std::endl; 00019| 00020| // Add derived event during iteration 00021| if (*it == "user_login") { 00022| events_.push_back("log_analytics"); // Invalidates iterator! 00023| // Do not advance 'it'. The next iteration will check the new end() against the now-invalid 'it'. 00024| // Since push_back invalidates all iterators, we must rely on the loop condition re-evaluating. 00025| // The element we just processed is still *it. The next element is now at it+1. 00026| // If we don't advance, the next iteration will process *it again, leading to an infinite loop if we keep inserting. 00027| } else { 00028| ++it; // Only advance if no insertion happened 00029| } 00030| } ``` Wait, if `push_back` happens, `it` is invalidated. The loop condition `it != events_.end()` will re-evaluate. If the vector grew, `events_.end()` is now different, but `it` is invalid. This is UB. The correct fix for `std::vector` when inserting is to use the iterator returned by `insert`, but `push_back` doesn't return one. The only safe way to iterate and insert into a `std::vector` is to use indices or to re-obtain iterators after insertion, which is inefficient. Given the context of a "subtle bug" fix, the intended fix is likely to use the iterator returned by `insert` if we were inserting in the middle, or to use indices. Since we are using `push_back`, the simplest fix that avoids UB is to use indices, or switch to `std::list`. Since I must fix *in place*, I will use indices, which is safer than relying on invalidated iterators. **Fix using indices:** ```cpp 00016| for (size_t i = 0; i < events_.size(); ++i) { 00017| std::cout << "Event: " << events_[i] << std::endl; 00019| // Add derived event during iteration 00021| if (events_[i] == "user_login") { 00022| events_.push_back("log_analytics"); // Safe with indices 00023| } 00024| } ``` This requires changing line 16 and removing line 00024 (`++it`). Applying the index-based fix. Original lines 16-24: ```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 replace line 16 and remove line 22. 1. Replace line 16: `for (auto it = events_.begin(); it != events_.end(); ++it)` with `for (size_t i = 0; i < events_.size(); ++i)` 2. Update line 17: `std::cout << "Event: " << *it << std::endl;` to `std::cout << "Event: " << events_[i] << std::endl;` 3. Update line 20: `if (*it == "user_login")` to `if (events_[i] == "user_login")` 4. Remove line 22: `}` (which is the closing brace for the `if` block, but the structure is different now). This is too complex for simple `edit` calls. I will use a single `edit` call to replace the entire loop block with the index-based version. Old block (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| } ``` New block (lines 16-23): ```cpp for (size_t i = 0; i < events_.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 need to be careful with line numbers and context. I will use the whole block for replacement. Old string (lines 16-23): `for (auto it = events_.begin(); it != events_.end(); ++it) {\n std::cout << "Event: " << *it << std::endl;\n\n // Add derived event during iteration\n if (*it == "user_login") {\n events_.push_back("log_analytics"); // Invalidates iterator!\n }\n }` New string: `for (size_t i = 0; i < events_.size(); ++i) {\n std::cout << "Event: " << events_[i] << std::endl;\n\n // Add derived event during iteration\n if (events_[i] == "user_login") {\n events_.push_back("log_analytics");\n }\n }` I will simplify the new string by removing the comment about invalidation, as the code is now correct. New string (simplified): `for (size_t i = 0; i < events_.size(); ++i) {\n std::cout << "Event: " << events_[i] << std::endl;\n\n // Add derived event during iteration\n if (events_[i] == "user_login") {\n events_.push_back("log_analytics");\n }\n }` Wait, the original line 18 is an empty line, and line 19 is a comment. I must preserve surrounding context/lines if possible, but replacing the whole loop block is cleaner here. I will use the exact text from the file for the old string. Old string (lines 16-23): `for (auto it = events_.begin(); it != events_.end(); ++it) {\n std::cout << "Event: " << *it << std::endl;\n\n // Add derived event during iteration\n if (*it == "user_login") {\n events_.push_back("log_analytics"); // Invalidates iterator!\n }\n }` New string (lines 16-23): `for (size_t i = 0; i < events_.size(); ++i) {\n std::cout << "Event: " << events_[i] << std::endl;\n\n // Add derived event during iteration\n if (events_[i] == "user_login") {\n events_.push_back("log_analytics");\n }\n }` I will use a slightly cleaner new string that matches the original formatting style better. New string: `for (size_t i = 0; i < events_.size(); ++i) {\n std::cout << "Event: " << events_[i] << std::endl;\n\n // Add derived event during iteration\n if (events_[i] == "user_login") {\n events_.push_back("log_analytics");\n }\n }` Let's check the original lines 16-23 again from the read output: ``` 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| } ``` Old string: `for (auto it = events_.begin(); it != events_.end(); ++it) {\n std::cout << "Event: " << *it << std::endl;\n\n // Add derived event during iteration\n if (*it == "user_login") {\n events_.push_back("log_analytics"); // Invalidates iterator!\n }\n }` New string: `for (size_t i = 0; i < events_.size(); ++i) {\n std::cout << "Event: " << events_[i] << std::endl;\n\n // Add derived event during iteration\n if (events_[i] == "user_login") {\n events_.push_back("log_analytics");\n }\n }` This looks correct for replacing the entire loop structure.  INFO 2025-10-25T16:45:20 +74ms service=bus type=file.edited publishing INFO 2025-10-25T16:45:20 +1ms service=format file=/app/input/iterator_invalidation.cpp formatting INFO 2025-10-25T16:45:20 +2ms service=format name=zig ext=.cpp checking INFO 2025-10-25T16:45:20 +0ms service=format name=standardrb ext=.cpp checking INFO 2025-10-25T16:45:20 +0ms service=format name=ruff ext=.cpp checking INFO 2025-10-25T16:45:20 +0ms service=format name=rubocop ext=.cpp checking INFO 2025-10-25T16:45:20 +0ms service=format name=prettier ext=.cpp checking INFO 2025-10-25T16:45:20 +0ms service=format name=mix ext=.cpp checking INFO 2025-10-25T16:45:20 +0ms service=format name=ktlint ext=.cpp checking INFO 2025-10-25T16:45:20 +0ms service=format name=htmlbeautifier ext=.cpp checking INFO 2025-10-25T16:45:20 +0ms service=format name=gofmt ext=.cpp checking INFO 2025-10-25T16:45:20 +1ms service=format name=clang-format ext=.cpp checking INFO 2025-10-25T16:45:20 +0ms service=format name=biome ext=.cpp checking INFO 2025-10-25T16:45:20 +4ms service=file.time sessionID=ses_5e3be0661ffeg4k8Zcmrpso7M7 file=/app/input/iterator_invalidation.cpp read INFO 2025-10-25T16:45:20 +10ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-result part INFO 2025-10-25T16:45:20 +2ms service=bus type=message.part.updated publishing |  Edit app/input/iterator_invalidation.cpp INFO 2025-10-25T16:45:20 +8ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish-step part INFO 2025-10-25T16:45:20 +9ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:20 +4ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:21 +4ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish part INFO 2025-10-25T16:45:21 +5ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:21 +56ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:21 +3ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:21 +211ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:21 +63ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 process INFO 2025-10-25T16:45:21 +9ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start part INFO 2025-10-25T16:45:22 +775ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start-step part INFO 2025-10-25T16:45:22 +58ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:22 +1ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-start part INFO 2025-10-25T16:45:22 +0ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:22 +10ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:22 +6ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:22 +2ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:22 +61ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:22 +3ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:22 +3ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-start part INFO 2025-10-25T16:45:22 +17ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:22 +0ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-delta part INFO 2025-10-25T16:45:22 +4ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-end part INFO 2025-10-25T16:45:22 +0ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-call part INFO 2025-10-25T16:45:22 +1ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:22 +17ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-end part INFO 2025-10-25T16:45:22 +4ms service=bus type=message.part.updated publishing  Fix applied for `iterator_invalidation.cpp`. Next file: `unsigned_underflow.cpp`. I will read its content.  INFO 2025-10-25T16:45:22 +20ms service=file.time sessionID=ses_5e3be0661ffeg4k8Zcmrpso7M7 file=/app/input/unsigned_underflow.cpp read INFO 2025-10-25T16:45:22 +52ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-result part INFO 2025-10-25T16:45:22 +11ms service=bus type=message.part.updated publishing |  Read app/input/unsigned_underflow.cpp INFO 2025-10-25T16:45:22 +7ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish-step part INFO 2025-10-25T16:45:22 +20ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:22 +8ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:22 +10ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish part INFO 2025-10-25T16:45:22 +1ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:22 +86ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:22 +3ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:22 +334ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:22 +70ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 process INFO 2025-10-25T16:45:22 +16ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start part INFO 2025-10-25T16:45:23 +907ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start-step part INFO 2025-10-25T16:45:23 +7ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:23 +0ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-start part INFO 2025-10-25T16:45:23 +7ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:23 +1ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:24 +240ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:24 +9ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:24 +2ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:24 +4ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:24 +100ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:24 +8ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:24 +117ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:24 +4ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:24 +132ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:24 +4ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:24 +116ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:24 +0ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:24 +134ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:24 +1ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:24 +202ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:24 +2ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:25 +244ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:25 +7ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:26 +1716ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-start part INFO 2025-10-25T16:45:26 +11ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:26 +11ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-delta part INFO 2025-10-25T16:45:26 +1ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-end part INFO 2025-10-25T16:45:26 +2ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-call part INFO 2025-10-25T16:45:26 +4ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:26 +6ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-end part INFO 2025-10-25T16:45:26 +10ms service=bus type=message.part.updated publishing  The bug in `unsigned_underflow.cpp` is on line 16: `return tail_ - head_;`. Since `tail_` and `head_` are `size_t` (unsigned), if `tail_ < head_`, the subtraction results in a large positive number due to unsigned integer wrap-around, instead of indicating that the buffer is mostly full (or that the calculation is invalid in this simple model). In a typical ring buffer implementation where `head_ == tail_` means empty, the number of elements is usually calculated as `(tail_ - head_ + capacity_) % capacity_` if we assume the buffer is never completely full (leaving one slot empty) or if we use a separate count variable. However, looking at the `push` implementation (lines 9-11), it seems the buffer is intended to be full when `tail_` wraps around and catches up to `head_`, but the `isEmpty` check suggests `head_ == tail_` means empty. If the buffer is never full, then `tail_ - head_` is correct *unless* `tail_ < head_`. Given the simple structure, the expected number of elements when `tail_ < head_` (meaning it wrapped around) is `(capacity_ - head_) + tail_`. **Fix:** Modify line 16 to correctly calculate the distance, accounting for wrap-around. New calculation for line 16: `return (tail_ >= head_) ? (tail_ - head_) : (capacity_ - head_ + tail_);` I will apply this fix.  INFO 2025-10-25T16:45:26 +13ms service=bus type=file.edited publishing INFO 2025-10-25T16:45:26 +12ms service=format file=/app/input/unsigned_underflow.cpp formatting INFO 2025-10-25T16:45:26 +2ms service=format name=zig ext=.cpp checking INFO 2025-10-25T16:45:26 +1ms service=format name=standardrb ext=.cpp checking INFO 2025-10-25T16:45:26 +0ms service=format name=ruff ext=.cpp checking INFO 2025-10-25T16:45:26 +4ms service=format name=rubocop ext=.cpp checking INFO 2025-10-25T16:45:26 +1ms service=format name=prettier ext=.cpp checking INFO 2025-10-25T16:45:26 +0ms service=format name=mix ext=.cpp checking INFO 2025-10-25T16:45:26 +2ms service=format name=ktlint ext=.cpp checking INFO 2025-10-25T16:45:26 +2ms service=format name=htmlbeautifier ext=.cpp checking INFO 2025-10-25T16:45:26 +0ms service=format name=gofmt ext=.cpp checking INFO 2025-10-25T16:45:26 +1ms service=format name=clang-format ext=.cpp checking INFO 2025-10-25T16:45:26 +0ms service=format name=biome ext=.cpp checking INFO 2025-10-25T16:45:26 +1ms service=file.time sessionID=ses_5e3be0661ffeg4k8Zcmrpso7M7 file=/app/input/unsigned_underflow.cpp read INFO 2025-10-25T16:45:27 +19ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-result part INFO 2025-10-25T16:45:27 +7ms service=bus type=message.part.updated publishing |  Edit app/input/unsigned_underflow.cpp INFO 2025-10-25T16:45:27 +7ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish-step part INFO 2025-10-25T16:45:27 +11ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:27 +8ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:27 +4ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish part INFO 2025-10-25T16:45:27 +4ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:27 +17ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:27 +10ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:27 +316ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:27 +50ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 process INFO 2025-10-25T16:45:27 +15ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start part INFO 2025-10-25T16:45:28 +870ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start-step part INFO 2025-10-25T16:45:28 +14ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:28 +2ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-start part INFO 2025-10-25T16:45:28 +9ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:28 +1ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:28 +68ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:28 +8ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:28 +177ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:28 +5ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:29 +812ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-start part INFO 2025-10-25T16:45:29 +8ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:29 +6ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-delta part INFO 2025-10-25T16:45:29 +2ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-end part INFO 2025-10-25T16:45:29 +3ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-call part INFO 2025-10-25T16:45:29 +6ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:29 +3ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-end part INFO 2025-10-25T16:45:29 +9ms service=bus type=message.part.updated publishing  Fix applied for `unsigned_underflow.cpp`. Next file: `dangling_cstr.cpp`. I will read its content.  INFO 2025-10-25T16:45:29 +16ms service=file.time sessionID=ses_5e3be0661ffeg4k8Zcmrpso7M7 file=/app/input/dangling_cstr.cpp read INFO 2025-10-25T16:45:29 +6ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-result part INFO 2025-10-25T16:45:29 +8ms service=bus type=message.part.updated publishing |  Read app/input/dangling_cstr.cpp INFO 2025-10-25T16:45:29 +2ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish-step part INFO 2025-10-25T16:45:29 +8ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:29 +12ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:29 +1ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish part INFO 2025-10-25T16:45:29 +2ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:29 +71ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:29 +6ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:29 +194ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:29 +34ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 process INFO 2025-10-25T16:45:29 +10ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start part INFO 2025-10-25T16:45:30 +872ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start-step part INFO 2025-10-25T16:45:30 +15ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:30 +8ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-start part INFO 2025-10-25T16:45:30 +9ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:30 +2ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:30 +79ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:30 +5ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:30 +106ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:30 +2ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:31 +122ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:31 +6ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:31 +125ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:31 +2ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:31 +132ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:31 +5ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:31 +117ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:31 +0ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:31 +154ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-delta part INFO 2025-10-25T16:45:31 +0ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:33 +1751ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-start part INFO 2025-10-25T16:45:33 +13ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:33 +5ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-delta part INFO 2025-10-25T16:45:33 +1ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-end part INFO 2025-10-25T16:45:33 +3ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-call part INFO 2025-10-25T16:45:33 +1ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:33 +9ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=text-end part INFO 2025-10-25T16:45:33 +5ms service=bus type=message.part.updated publishing  The bug in `dangling_cstr.cpp` is on line 10. The function `formatMessage` returns `const char*` obtained from `formatted.c_str()`, where `formatted` is a local `std::string` temporary object created on line 9. This results in a dangling pointer being returned. **Fix:** Change `formatMessage` to return `std::string` by value, or make the returned string a member of `Logger` (which is less ideal for a formatting function). Returning `std::string` by value is the idiomatic fix here. I will change the return type on line 8 and the return statement on line 10. 1. Change line 8: `const char* formatMessage(const std::string& msg)` to `std::string formatMessage(const std::string& msg)` 2. Change line 10: `return formatted.c_str();` to `return formatted;` Applying the fixes.  INFO 2025-10-25T16:45:33 +14ms service=bus type=file.edited publishing INFO 2025-10-25T16:45:33 +0ms service=format file=/app/input/dangling_cstr.cpp formatting INFO 2025-10-25T16:45:33 +0ms service=format name=zig ext=.cpp checking INFO 2025-10-25T16:45:33 +1ms service=format name=standardrb ext=.cpp checking INFO 2025-10-25T16:45:33 +1ms service=format name=ruff ext=.cpp checking INFO 2025-10-25T16:45:33 +0ms service=format name=rubocop ext=.cpp checking INFO 2025-10-25T16:45:33 +0ms service=format name=prettier ext=.cpp checking INFO 2025-10-25T16:45:33 +0ms service=format name=mix ext=.cpp checking INFO 2025-10-25T16:45:33 +0ms service=format name=ktlint ext=.cpp checking INFO 2025-10-25T16:45:33 +4ms service=format name=htmlbeautifier ext=.cpp checking INFO 2025-10-25T16:45:33 +0ms service=format name=gofmt ext=.cpp checking INFO 2025-10-25T16:45:33 +0ms service=format name=clang-format ext=.cpp checking INFO 2025-10-25T16:45:33 +0ms service=format name=biome ext=.cpp checking INFO 2025-10-25T16:45:33 +8ms service=file.time sessionID=ses_5e3be0661ffeg4k8Zcmrpso7M7 file=/app/input/dangling_cstr.cpp read INFO 2025-10-25T16:45:33 +5ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-result part INFO 2025-10-25T16:45:33 +6ms service=bus type=message.part.updated publishing |  Edit app/input/dangling_cstr.cpp INFO 2025-10-25T16:45:33 +10ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish-step part INFO 2025-10-25T16:45:33 +6ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:33 +6ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:33 +4ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish part INFO 2025-10-25T16:45:33 +3ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:33 +60ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:33 +6ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:33 +315ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:33 +54ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 process INFO 2025-10-25T16:45:33 +16ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start part INFO 2025-10-25T16:45:34 +770ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=start-step part INFO 2025-10-25T16:45:34 +33ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:34 +13ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-start part INFO 2025-10-25T16:45:34 +3ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:34 +7ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-delta part INFO 2025-10-25T16:45:34 +12ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-input-end part INFO 2025-10-25T16:45:34 +5ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-call part INFO 2025-10-25T16:45:34 +9ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:34 +17ms service=bus type=file.edited publishing INFO 2025-10-25T16:45:34 +10ms service=format file=/app/input/dangling_cstr.cpp formatting INFO 2025-10-25T16:45:34 +6ms service=format name=zig ext=.cpp checking INFO 2025-10-25T16:45:34 +9ms service=format name=standardrb ext=.cpp checking INFO 2025-10-25T16:45:34 +0ms service=format name=ruff ext=.cpp checking INFO 2025-10-25T16:45:34 +0ms service=format name=rubocop ext=.cpp checking INFO 2025-10-25T16:45:34 +0ms service=format name=prettier ext=.cpp checking INFO 2025-10-25T16:45:34 +0ms service=format name=mix ext=.cpp checking INFO 2025-10-25T16:45:34 +0ms service=format name=ktlint ext=.cpp checking INFO 2025-10-25T16:45:34 +0ms service=format name=htmlbeautifier ext=.cpp checking INFO 2025-10-25T16:45:34 +0ms service=format name=gofmt ext=.cpp checking INFO 2025-10-25T16:45:34 +0ms service=format name=clang-format ext=.cpp checking INFO 2025-10-25T16:45:34 +1ms service=format name=biome ext=.cpp checking INFO 2025-10-25T16:45:34 +112ms service=file.time sessionID=ses_5e3be0661ffeg4k8Zcmrpso7M7 file=/app/input/dangling_cstr.cpp read INFO 2025-10-25T16:45:34 +64ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=tool-result part INFO 2025-10-25T16:45:34 +16ms service=bus type=message.part.updated publishing |  Edit app/input/dangling_cstr.cpp INFO 2025-10-25T16:45:34 +6ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish-step part INFO 2025-10-25T16:45:35 +24ms service=bus type=message.part.updated publishing INFO 2025-10-25T16:45:35 +26ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:35 +5ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 type=finish part INFO 2025-10-25T16:45:35 +15ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:35 +164ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:35 +11ms service=bus type=message.updated publishing INFO 2025-10-25T16:45:35 +20ms service=session.compaction pruning INFO 2025-10-25T16:45:35 +16ms service=session.lock sessionID=ses_5e3be0661ffeg4k8Zcmrpso7M7 unlocked INFO 2025-10-25T16:45:35 +0ms service=session.prompt session=ses_5e3be0661ffeg4k8Zcmrpso7M7 sessionID=ses_5e3be0661ffeg4k8Zcmrpso7M7 unlocking  INFO 2025-10-25T16:45:35 +94ms service=bus type=session.idle publishing INFO 2025-10-25T16:45:36 +974ms service=session.compaction pruned=0 total=0 found --- 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.