| .. title:: clang-tidy - bugprone-posix-return |
| |
| bugprone-posix-return |
| ===================== |
| |
| Checks if any calls to ``pthread_*`` or ``posix_*`` functions |
| (except ``posix_openpt``) expect negative return values. These functions return |
| either ``0`` on success or an ``errno`` on failure, which is positive only. |
| |
| Example buggy usage looks like: |
| |
| .. code-block:: c |
| |
| if (posix_fadvise(...) < 0) { |
| |
| This will never happen as the return value is always non-negative. A simple fix could be: |
| |
| .. code-block:: c |
| |
| if (posix_fadvise(...) > 0) { |
