* [committed] libstdc++: Do not use assume attribute for Clang [PR112467]
@ 2023-11-11 0:58 Jonathan Wakely
0 siblings, 0 replies; only message in thread
From: Jonathan Wakely @ 2023-11-11 0:58 UTC (permalink / raw)
To: libstdc++, gcc-patches
Tested x86_64-linux (-m32 and -m64). Pushed to trunk.
-- >8 --
Clang has an 'assume' attribute, but it's a function attribute not a
statement attribute. The recently-added use of the statement form causes
an error with Clang.
libstdc++-v3/ChangeLog:
PR libstdc++/112467
* include/bits/stl_bvector.h (_M_assume_normalized): Do not use
statement form of assume attribute for Clang.
---
libstdc++-v3/include/bits/stl_bvector.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/libstdc++-v3/include/bits/stl_bvector.h b/libstdc++-v3/include/bits/stl_bvector.h
index 2b91af2005f..64f04c1f4f5 100644
--- a/libstdc++-v3/include/bits/stl_bvector.h
+++ b/libstdc++-v3/include/bits/stl_bvector.h
@@ -185,8 +185,10 @@ _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
void
_M_assume_normalized() const
{
+#if __has_attribute(__assume__) && !defined(__clang__)
unsigned int __ofst = _M_offset;
__attribute__ ((__assume__ (__ofst < unsigned(_S_word_bit))));
+#endif
}
_GLIBCXX20_CONSTEXPR
--
2.41.0
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2023-11-11 0:58 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2023-11-11 0:58 [committed] libstdc++: Do not use assume attribute for Clang [PR112467] Jonathan Wakely
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).