# Avoiding False Positives

Before reporting, check:

- A raw pointer that is non-owning (an observer) is fine; only owning raw
  pointers are a problem.
- Unsigned integer overflow is defined (wraps); only signed overflow is UB.
- `std::move` on a `const` object or a return of a local is a
  pessimization/no-op, not a bug.
- Copy elision: returning a local by value is fine; don't suggest `std::move` on
  return.
- Static locals are initialized thread-safely since C++11.
- Code guarded by `#ifdef` or feature macros may target a different standard or
  platform.
- If the compiler (with warnings enabled) would reject or warn on it, defer to
  the compiler.
- If you're unsure a construct is UB, look it up on cppreference before
  reporting.

If still unsure, mark the finding as **Question** instead of **Issue**.