| .. title:: clang-tidy - cppcoreguidelines-pro-type-vararg |
| |
| cppcoreguidelines-pro-type-vararg |
| ================================= |
| |
| This check flags all calls to c-style vararg functions and all use of |
| ``va_arg``. |
| |
| To allow for SFINAE use of vararg functions, a call is not flagged if a literal |
| 0 is passed as the only vararg argument. |
| |
| Passing to varargs assumes the correct type will be read. This is fragile |
| because it cannot generally be enforced to be safe in the language and so relies |
| on programmer discipline to get it right. |
| |
| This rule is part of the `Type safety (Type.8) |
| <https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#Pro-type-varargs>`_ |
| profile from the C++ Core Guidelines. |