https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104492
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Component|c++ |middle-end
Summary|Bogus dangling pointer |[12 Regression] Bogus
|warning (dangling pointer |dangling pointer warning at
|to ‘candidates’ may be used |-O3
|[-Werror=dangling-pointer=] |
|) |
Ever confirmed|0 |1
Blocks| |104077
Last reconfirmed| |2022-02-11
Keywords| |diagnostic
CC| |msebor at gcc dot gnu.org
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
The warning is issued for the if condition in the basic block below:
<bb 28> [local count: 1014686340]:
# _106 = PHI <&MEM <const struct QLatin1String[1]> [(void *)&candidates +
16B](26), &candidates(27)>
<L14>:
_274 = _106;
__pred ={v} {CLOBBER(eol)};
_17 = _274;
__pred ={v} {CLOBBER(eol)};
candidates ={v} {CLOBBER(eol)};
<<< clobber
s ={v} {CLOBBER(eol)};
D.169975 ={v} {CLOBBER(eol)};
if (&MEM <const struct QLatin1String[1]> [(void *)&candidates + 16B] != _17)
<<< -Wdangling-pointer
goto <bb 30>; [5.50%]
else
goto <bb 29>; [94.50%]
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104077
[Bug 104077] bogus/missing -Wdangling-pointer
