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[Bug sanitizer/87837] [8/9 Regression] -O2 -fsanitize=signed-integer-overflow misses overflows on x86-64
- From: "jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 05 Nov 2018 10:27:46 +0000
- Subject: [Bug sanitizer/87837] [8/9 Regression] -O2 -fsanitize=signed-integer-overflow misses overflows on x86-64
- Auto-submitted: auto-generated
- References: <bug-87837-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87837
--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Nov 5 10:27:13 2018
New Revision: 265793
URL: https://gcc.gnu.org/viewcvs?rev=265793&root=gcc&view=rev
Log:
PR sanitizer/87837
* match.pd (X + Y < X): Don't optimize if TYPE_OVERFLOW_SANITIZED.
* c-c++-common/ubsan/pr87837.c: New test.
Added:
trunk/gcc/testsuite/c-c++-common/ubsan/pr87837.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/match.pd
trunk/gcc/testsuite/ChangeLog