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[Bug middle-end/24851] [4.1 Regression] f2c miscompilation
- From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 17 Nov 2005 11:35:05 -0000
- Subject: [Bug middle-end/24851] [4.1 Regression] f2c miscompilation
- References: <bug-24851-10053@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #18 from rguenth at gcc dot gnu dot org 2005-11-17 11:35 -------
Subject: Bug 24851
Author: rguenth
Date: Thu Nov 17 11:35:00 2005
New Revision: 107117
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=107117
Log:
2005-11-16 Richard Guenther <rguenther@suse.de>
PR middle-end/24851
* fold-const.c (extract_array_ref): Return byte offset
in all cases.
(fold_binary): Fold &x[a] CMP &x[b] to
a*sizeof(*x) CMP b*sizeof(*x) to get correct overflow
behavior.
* gcc.c-torture/execute/pr24851.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.c-torture/execute/pr24851.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/fold-const.c
trunk/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24851