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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/89543] Don't modify TREE_NO_WARNING during folding in place
Date: Sat, 25 Dec 2021 21:45:29 +0000 [thread overview]
Message-ID: <bug-89543-4-ZnWcx2nexc@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-89543-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89543
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #4)
> [apinski@xeond2 upstream-gcc-git]$ gdb --args ./gcc/objdir/stage1-gcc/cc1
> /home/apinski/src/upstream-gcc-git/gcc/gcc/testsuite/gcc.dg/Wstringop-
> overread-6.c
>
> ....
> (gdb) p debug_generic_expr(expr)
> strlen ((const char *) &arr + 4)
Here is the reduced testcase:
const char arr[7] = "abc\0def";
int warn_strlen (void)
{
return __builtin_strlen (arr+4);
}
next prev parent reply other threads:[~2021-12-25 21:45 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <bug-89543-4@http.gcc.gnu.org/bugzilla/>
2021-12-24 21:38 ` pinskia at gcc dot gnu.org
2021-12-24 21:48 ` pinskia at gcc dot gnu.org
2021-12-25 17:33 ` pinskia at gcc dot gnu.org
2021-12-25 21:24 ` pinskia at gcc dot gnu.org
2021-12-25 21:45 ` pinskia at gcc dot gnu.org [this message]
2021-12-25 21:52 ` pinskia at gcc dot gnu.org
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