https://gcc.gnu.org/g:d797202caa34f008399dc65e10cc723f52fcbcc5
commit r15-3894-gd797202caa34f008399dc65e10cc723f52fcbcc5
Author: Iain Sandoe <i...@sandoe.co.uk>
Date: Thu Sep 26 11:07:41 2024 +0100
libstdc++: Suppress an attribute suggestion warning [PR116853].
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 <i...@sandoe.co.uk>
Diff:
---
libstdc++-v3/include/bits/basic_string.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/libstdc++-v3/include/bits/basic_string.h
b/libstdc++-v3/include/bits/basic_string.h
index 976577f8f22d..e9b17ea48b5a 100644
--- a/libstdc++-v3/include/bits/basic_string.h
+++ b/libstdc++-v3/include/bits/basic_string.h
@@ -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
