Test: unsigned_underflow.cpp
unsigned_underflow.cpp:14:31: error: stray '\' in program
   14 |     size_t available() const {\n        return (tail_ + capacity_ - head_) % capacity_;\n    }
      |                               ^
unsigned_underflow.cpp:14:88: error: stray '\' in program
   14 |     size_t available() const {\n        return (tail_ + capacity_ - head_) % capacity_;\n    }
      |                                                                                        ^
unsigned_underflow.cpp: In member function 'size_t RingBuffer::available() const':
unsigned_underflow.cpp:14:32: error: 'n' was not declared in this scope
   14 |     size_t available() const {\n        return (tail_ + capacity_ - head_) % capacity_;\n    }
      |                                ^
unsigned_underflow.cpp:14:94: error: expected ';' before '}' token
   14 |     size_t available() const {\n        return (tail_ + capacity_ - head_) % capacity_;\n    }
      |                                                                                              ^
unsigned_underflow.cpp:14:94: warning: no return statement in function returning non-void [-Wreturn-type]