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[Bug middle-end/23484] __builtin___memcpy_chk miscompilation
- From: "cvs-commit at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 29 Aug 2005 08:40:56 -0000
- Subject: [Bug middle-end/23484] __builtin___memcpy_chk miscompilation
- References: <20050819163816.23484.gbeauchesne@mandriva.com>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2005-08-29 08:40 -------
Subject: Bug 23484
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: jakub@gcc.gnu.org 2005-08-29 08:40:48
Modified files:
gcc : ChangeLog builtins.c
gcc/testsuite : ChangeLog
Added files:
gcc/testsuite/gcc.c-torture/execute/builtins: pr23484-chk-lib.c
pr23484-chk.c
Log message:
PR middle-end/23484
* builtins.c (fold_builtin_memory_chk, fold_builtin_stxcpy_chk,
fold_builtin_strncpy_chk, fold_builtin_snprintf_chk): If len is
not constant, but maxlen is, don't set len to maxlen, rather
set maxlen to len if len is a constant.
* gcc.c-torture/execute/builtins/pr23484-chk.c: New test.
* gcc.c-torture/execute/builtins/pr23484-chk-lib.c: New file.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.9847&r2=2.9848
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/builtins.c.diff?cvsroot=gcc&r1=1.474&r2=1.475
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.5974&r2=1.5975
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.c-torture/execute/builtins/pr23484-chk-lib.c.diff?cvsroot=gcc&r1=NONE&r2=1.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.c-torture/execute/builtins/pr23484-chk.c.diff?cvsroot=gcc&r1=NONE&r2=1.1
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23484