[Bug tree-optimization/21173] [4.0/4.1 regression] miscompiled pointer subtraction broke Linux kernel

Mon Apr 25 14:00:00 GMT 2005

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-04-25 13:59 -------
Subject: Bug 21173

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	dberlin@gcc.gnu.org	2005-04-25 13:59:39

Modified files:
	gcc            : ChangeLog tree-ssa-pre.c 

Log message:
	2005-04-25  Steven Bosscher  <stevenb@suse.de>
	
	Fix PR tree-optimization/21173
	
	* tree-ssa-pre.c (create_expression_by_pieces): Simplify code.
	Unshare expression we pass to force_gimple_operand.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.8450&r2=2.8451
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-pre.c.diff?cvsroot=gcc&r1=2.81&r2=2.82


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21173