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[Bug middle-end/83373] False positive reported by -Wstringop-overflow
- From: "msebor at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 18 Dec 2017 22:50:29 +0000
- Subject: [Bug middle-end/83373] False positive reported by -Wstringop-overflow
- Auto-submitted: auto-generated
- References: <bug-83373-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83373
--- Comment #10 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Mon Dec 18 22:49:57 2017
New Revision: 255790
URL: https://gcc.gnu.org/viewcvs?rev=255790&root=gcc&view=rev
Log:
PR middle-end/83373 - False positive reported by -Wstringop-overflow
PR tree-optimization/78450 - strlen(s) return value can be assumed to be less
than the size of s
gcc/ChangeLog:
PR middle-end/83373
PR tree-optimization/78450
* tree-ssa-strlen.c (maybe_set_strlen_range): New function.
(handle_builtin_strlen): Call it.
gcc/testsuite/ChangeLog:
PR middle-end/83373
PR tree-optimization/78450
* gcc.dg/pr83373.c: New test.
* gcc.dg/strlenopt-36.c: New test.
* gcc.dg/strlenopt-37.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr83373.c
trunk/gcc/testsuite/gcc.dg/strlenopt-36.c
trunk/gcc/testsuite/gcc.dg/strlenopt-37.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-strlen.c