From: Richard Guenther <rguenther@suse.de>
Date: Fri, 15 Aug 2008 12:59:16 +0000 (+0000)
Subject: tree-ssa-ccp.c (maybe_fold_offset_to_reference): Do not strip components for unknown... 
X-Git-Tag: releases/gcc-4.4.0~3126
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a214f4d615c7c7e6720db5d579eaf8e97aefb216;p=thirdparty%2Fgcc.git

tree-ssa-ccp.c (maybe_fold_offset_to_reference): Do not strip components for unknown size accesses.

2008-08-15  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-ccp.c (maybe_fold_offset_to_reference): Do not
	strip components for unknown size accesses.

From-SVN: r139129
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d25df32cd9eb..d823e22a41ad 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2008-08-15  Richard Guenther  <rguenther@suse.de>
+
+	* tree-ssa-ccp.c (maybe_fold_offset_to_reference): Do not
+	strip components for unknown size accesses.
+
 2008-08-15  Wolfgang Gellerich  <gellerich@de.ibm.com>
 
 	* config/s390/2097.md New file.
diff --git a/gcc/tree-ssa-ccp.c b/gcc/tree-ssa-ccp.c
index ff8af4f14dd6..2e34bd99d6b4 100644
--- a/gcc/tree-ssa-ccp.c
+++ b/gcc/tree-ssa-ccp.c
@@ -1976,6 +1976,7 @@ maybe_fold_offset_to_reference (tree base, tree offset, tree orig_type)
 					     &size, &maxsize);
 	  gcc_assert (newbase);
 	  if (size == maxsize
+	      && size != -1
 	      && !(sub_offset & (BITS_PER_UNIT - 1)))
 	    {
 	      base = newbase;