From: Richard Biener <rguenther@suse.de>
Date: Wed, 2 Nov 2016 08:13:29 +0000 (+0000)
Subject: re PR middle-end/78047 (Chromium apparently gets miscompiled)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=3cea049a4fbfd0a81690d12d383d6a27246c98b7;p=gcc.git

re PR middle-end/78047 (Chromium apparently gets miscompiled)

2016-11-02  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/78047
	* tree-ssa-structalias.c (push_fields_onto_fieldstack): Initialize
	fake field at offset zero conservatively regarding to may_have_pointers.

From-SVN: r241775
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 163f5f68ffb..5fdafbfac06 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2016-11-02  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/78047
+	* tree-ssa-structalias.c (push_fields_onto_fieldstack): Initialize
+	fake field at offset zero conservatively regarding to may_have_pointers.
+
 2016-11-02  Richard Biener  <rguenther@suse.de>
 
 	* tree-vrp.c (evrp_dom_walker::before_dom_children): Call
diff --git a/gcc/tree-ssa-structalias.c b/gcc/tree-ssa-structalias.c
index fb364f1319d..a0110bcfccb 100644
--- a/gcc/tree-ssa-structalias.c
+++ b/gcc/tree-ssa-structalias.c
@@ -5566,7 +5566,7 @@ push_fields_onto_fieldstack (tree type, vec<fieldoff_s> *fieldstack,
 		&& offset + foff != 0)
 	      {
 		fieldoff_s e
-		  = {0, offset + foff, false, false, false, false, NULL_TREE};
+		  = {0, offset + foff, false, false, true, false, NULL_TREE};
 		pair = fieldstack->safe_push (e);
 	      }