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Add warn disable for GGC 12 bound checking error (#5355)

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Issue: #5224

The `internals.registered_types_py...` line in pybind11.h triggers a
false-positive bounds checking warning in GCC 12.

This is discussed in
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115824.

The workaround implemented is taken from suggestions then refactored to
use the `PYBIND11_WARNING_PUSH` and `PYBIND11_WARNING_POP` MACROS.
This commit is contained in:
Bobby R. Bruce 2024-09-14 23:51:50 -07:00 committed by GitHub
parent 0cf3a0f7b5
commit a7910be630
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1 changed files with 10 additions and 0 deletions
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include/pybind11/pybind11.h
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@ -1382,7 +1382,17 @@ protected:
} else {
internals.registered_types_cpp[tindex] = tinfo;
}
PYBIND11_WARNING_PUSH
#if defined(__GNUC__) && __GNUC__ == 12
// When using GCC 12 these warnings are disabled as they trigger
// false positive warnings. Discussed here:
// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115824.
PYBIND11_WARNING_DISABLE_GCC("-Warray-bounds")
PYBIND11_WARNING_DISABLE_GCC("-Wstringop-overread")
#endif
internals.registered_types_py[(PyTypeObject *) m_ptr] = {tinfo};
PYBIND11_WARNING_POP
});
if (rec.bases.size() > 1 || rec.multiple_inheritance) {