* [committed] libstdc++: Fix -Wmaybe-uninitialized false positive [PR103984]
@ 2022-03-01 15:26 Jonathan Wakely
0 siblings, 0 replies; only message in thread
From: Jonathan Wakely @ 2022-03-01 15:26 UTC (permalink / raw)
To: libstdc++, gcc-patches
Tested powerpc64le-linux, pushed to trunk.
-- >8 --
This fixes a false positive warning seen with LTO:
12/bits/regex_compiler.tcc:443:32: error: '__last_char._M_char' may be used uninitialized [-Werror=maybe-uninitialized]
Given that the std::regex code is not very efficient anyway, the
overhead of initializing this byte should be minimal.
libstdc++-v3/ChangeLog:
PR middle-end/103984
* include/bits/regex_compiler.h (_BracketMatcher::_M_char): Use
default member initializer.
---
libstdc++-v3/include/bits/regex_compiler.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libstdc++-v3/include/bits/regex_compiler.h b/libstdc++-v3/include/bits/regex_compiler.h
index 174aefe75f7..348c170c81a 100644
--- a/libstdc++-v3/include/bits/regex_compiler.h
+++ b/libstdc++-v3/include/bits/regex_compiler.h
@@ -125,7 +125,7 @@ namespace __detail
struct _BracketState
{
enum class _Type : char { _None, _Char, _Class } _M_type = _Type::_None;
- _CharT _M_char;
+ _CharT _M_char = _CharT();
void
set(_CharT __c) noexcept { _M_type = _Type::_Char; _M_char = __c; }
--
2.34.1
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2022-03-01 15:26 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-03-01 15:26 [committed] libstdc++: Fix -Wmaybe-uninitialized false positive [PR103984] 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).