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libstdc++: Include <mutex> in syncbuf.cc [PR122698] 

For most configurations bits/std_mutex.h would already be included by
<syncstream>, but not if configured with _GLIBCXX_USE_CXX11_ABI=0 as the
default, because syncbuf is disabled in that case.

libstdc++-v3/ChangeLog:

	PR libstdc++/122698
	* src/c++20/syncbuf.cc (__syncbuf_get_mutex): Include <mutex>.
	Fix indentation of function body.
This commit is contained in:
Jonathan Wakely 2025-11-16 13:57:25 +00:00 committed by Jonathan Wakely
parent d9a19e6805
commit 84dbb22f32
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1 changed files with 7 additions and 6 deletions
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13
libstdc++-v3/src/c++20/syncbuf.cc
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@ -23,6 +23,7 @@
// <http://www.gnu.org/licenses/>. // <http://www.gnu.org/licenses/>.
#include <syncstream> #include <syncstream>
#include <mutex>
#include <bits/functional_hash.h> #include <bits/functional_hash.h>
#if _GLIBCXX_HAS_GTHREADS #if _GLIBCXX_HAS_GTHREADS
@ -32,13 +33,13 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
mutex& mutex&
__syncbuf_get_mutex(void* __t) __syncbuf_get_mutex(void* __t)
{ {
const unsigned char __mask = 0xf; const unsigned char __mask = 0xf;
static mutex __m[__mask + 1]; static mutex __m[__mask + 1];
auto __key = _Hash_impl::hash(__t) & __mask; auto __key = _Hash_impl::hash(__t) & __mask;
return __m[__key]; return __m[__key];
} }
_GLIBCXX_END_NAMESPACE_VERSION _GLIBCXX_END_NAMESPACE_VERSION
} }