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[Bug tree-optimization/63445] [5 Regression] request: make -Wstrict-overflow avoid a class of false positives
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 09 Oct 2014 08:21:25 +0000
- Subject: [Bug tree-optimization/63445] [5 Regression] request: make -Wstrict-overflow avoid a class of false positives
- Auto-submitted: auto-generated
- References: <bug-63445-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63445
--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Oct 9 08:20:53 2014
New Revision: 216028
URL: https://gcc.gnu.org/viewcvs?rev=216028&root=gcc&view=rev
Log:
2014-10-09 Richard Biener <rguenther@suse.de>
PR tree-optimization/63445
* tree-vrp.c (simplify_cond_using_ranges): Only warn about
overflow for non-equality compares.
* gcc.dg/Wstrict-overflow-26.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/Wstrict-overflow-26.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vrp.c