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[Bug tree-optimization/38835] [4.3/4.4 Regression] field-insensitive PTA causes libstdc++ miscompiles
- 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: 16 Jan 2009 19:18:35 -0000
- Subject: [Bug tree-optimization/38835] [4.3/4.4 Regression] field-insensitive PTA causes libstdc++ miscompiles
- References: <bug-38835-10053@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #12 from rguenth at gcc dot gnu dot org 2009-01-16 19:18 -------
Subject: Bug 38835
Author: rguenth
Date: Fri Jan 16 19:18:18 2009
New Revision: 143442
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=143442
Log:
2009-01-16 Richard Guenther <rguenther@suse.de>
PR tree-optimization/38835
PR middle-end/36227
* fold-const.c (fold_binary): Remove PTR + INT -> (INT)(PTR p+ INT)
and INT + PTR -> (INT)(PTR p+ INT) folding.
* tree-ssa-address.c (create_mem_ref): Properly use POINTER_PLUS_EXPR.
java/
* builtins.c (build_addr_sum): Use POINTER_PLUS_EXPR.
* gcc.c-torture/execute/pr36227.c: New testcase.
* gcc.dg/tree-ssa/foldaddr-1.c: XFAIL.
* g++.dg/init/const7.C: Likewise.
Added:
trunk/gcc/testsuite/gcc.c-torture/execute/pr36227.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/fold-const.c
trunk/gcc/java/ChangeLog
trunk/gcc/java/builtins.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/init/const7.C
trunk/gcc/testsuite/gcc.dg/tree-ssa/foldaddr-1.c
trunk/gcc/tree-ssa-address.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38835