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[Bug preprocessor/79214] -Wno-system-header defeats strncat buffer overflow warnings
- 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: Thu, 04 May 2017 20:55:15 +0000
- Subject: [Bug preprocessor/79214] -Wno-system-header defeats strncat buffer overflow warnings
- Auto-submitted: auto-generated
- References: <bug-79214-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79214
--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Thu May 4 20:54:43 2017
New Revision: 247618
URL: https://gcc.gnu.org/viewcvs?rev=247618&root=gcc&view=rev
Log:
PR preprocessor/79214 - -Wno-system-header defeats strncat buffer overflow
warnings
PR middle-end/79222 - missing -Wstringop-overflow= on a stpcpy overflow
PR middle-end/79223 - missing -Wstringop-overflow on a memmove overflow
gcc/ChangeLog:
PR preprocessor/79214
PR middle-end/79222
PR middle-end/79223
* builtins.c (check_sizes): Add inlinining context and issue
warnings even when -Wno-system-headers is set.
(check_strncat_sizes): Same.
(expand_builtin_strncat): Same.
(expand_builtin_memmove): New function.
(expand_builtin_stpncpy): Same.
(expand_builtin): Handle memmove and stpncpy.
gcc/testsuite/ChangeLog:
PR preprocessor/79214
PR middle-end/79222
PR middle-end/79223
* gcc.dg/pr79214.c: New test.
* gcc.dg/pr79214.h: New test header.
* gcc.dg/pr79222.c: New test.
* gcc.dg/pr79223.c: New test.
* gcc.dg/pr78138.c: Adjust.
* gfortran.dg/unconstrained_commons.f: Same.
Added:
trunk/gcc/testsuite/gcc.dg/pr79214.c
trunk/gcc/testsuite/gcc.dg/pr79214.h
trunk/gcc/testsuite/gcc.dg/pr79222.c
trunk/gcc/testsuite/gcc.dg/pr79223.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/builtins.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/pr78138.c
trunk/gcc/testsuite/gfortran.dg/unconstrained_commons.f