https://gcc.gnu.org/g:d87c0d5443ba860dcbc6be24921e0ffb463cc96f
commit r15-7856-gd87c0d5443ba860dcbc6be24921e0ffb463cc96f
Author: Thomas Schwinge <tschwi...@baylibre.com>
Date: Wed Feb 19 20:34:25 2025 +0100
libstdc++: Avoid '-Wunused-parameter' for '__what' in function 'void
std::__throw_format_error(const char*)'
In a '-fno-exceptions' configuration:
In file included from
../../../../../source-gcc/libstdc++-v3/src/c++20/format.cc:29:
[...]/build-gcc/[...]/libstdc++-v3/include/format: In function ‘void
std::__throw_format_error(const char*)’:
[...]/build-gcc/[...]/libstdc++-v3/include/format:200:36: error: unused
parameter ‘__what’ [-Werror=unused-parameter]
200 | __throw_format_error(const char* __what)
| ~~~~~~~~~~~~^~~~~~
libstdc++-v3/
* include/bits/c++config [!__cpp_exceptions]
(_GLIBCXX_THROW_OR_ABORT): Reference '_EXC'.
Co-authored-by: Jonathan Wakely <jwak...@redhat.com>
Diff:
---
libstdc++-v3/include/bits/c++config | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libstdc++-v3/include/bits/c++config
b/libstdc++-v3/include/bits/c++config
index 6a73507d0748..676f5eecbbb6 100644
--- a/libstdc++-v3/include/bits/c++config
+++ b/libstdc++-v3/include/bits/c++config
@@ -261,7 +261,7 @@
# if __cpp_exceptions
# define _GLIBCXX_THROW_OR_ABORT(_EXC) (throw (_EXC))
# else
-# define _GLIBCXX_THROW_OR_ABORT(_EXC) (__builtin_abort())
+# define _GLIBCXX_THROW_OR_ABORT(_EXC) (__builtin_abort(), (void)(_EXC))
# endif
#endif
