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libstdc++: Suppress an attribute suggestion warning [PR116853].

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This warning is triggering during the build and breaking bootstrap on
at least two targets.  The warning appears valid, but the final fix for
it is not yet clear.

In the meantime, to restore bootstrap, the following patch ignores the
warning in the relevant code section.

	PR libstdc++/116853

libstdc++-v3/ChangeLog:

	* include/bits/basic_string.h: Ignore suggest-attribute=format
	warning when using posix vsnprintf in to_string() implementations.

Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>
This commit is contained in:
Iain Sandoe 2024-09-26 11:07:41 +01:00
parent c45844eb7d
commit d797202caa
1 changed files with 3 additions and 0 deletions
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libstdc++-v3/include/bits/basic_string.h
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@ -4399,6 +4399,8 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
return __str;
}
#elif _GLIBCXX_USE_C99_STDIO
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wsuggest-attribute=format"
// NB: (v)snprintf vs sprintf.
_GLIBCXX_NODISCARD
@ -4430,6 +4432,7 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
return __gnu_cxx::__to_xstring<string>(&std::vsnprintf, __n,
"%Lf", __val);
}
#pragma GCC diagnostic pop
#endif // _GLIBCXX_USE_C99_STDIO
#if defined(_GLIBCXX_USE_WCHAR_T) && _GLIBCXX_USE_C99_WCHAR