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[Bug c/51309] -Wstrict-overflow false alarm when overflow impossible in loop body
- From: "egallager at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 25 Jul 2017 19:45:07 +0000
- Subject: [Bug c/51309] -Wstrict-overflow false alarm when overflow impossible in loop body
- Auto-submitted: auto-generated
- References: <bug-51309-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51309
Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |egallager at gcc dot gnu.org
Resolution|--- |WORKSFORME
--- Comment #1 from Eric Gallager <egallager at gcc dot gnu.org> ---
I can't seem to reproduce the warning; all of these are silent:
$ /usr/local/bin/gcc -Wstrict-overflow -O2 -S u.c
$ /usr/local/bin/gcc -Wstrict-overflow=1 -O2 -S u.c
$ /usr/local/bin/gcc -Wstrict-overflow=2 -O2 -S u.c
$ /usr/local/bin/gcc -Wstrict-overflow=3 -O2 -S u.c
$ /usr/local/bin/gcc -Wstrict-overflow=4 -O2 -S u.c
$ /usr/local/bin/gcc -Wstrict-overflow=5 -O2 -S u.c
$ /usr/local/bin/gcc -Wstrict-overflow -O1 -S u.c
$ /usr/local/bin/gcc -Wstrict-overflow -O0 -S u.c
$ /usr/local/bin/gcc -Wstrict-overflow -Os -S u.c
$ /usr/local/bin/gcc -Wstrict-overflow -Og -S u.c
$ /usr/local/bin/gcc -Wstrict-overflow -O3 -S u.c
$ /usr/local/bin/gcc -Wstrict-overflow -Ofast -S u.c
And seeing as -Wstrict-overflow is being considered for deprecation in the next
release of GCC anyways, I think I can close this.