From: Martin Liska <mliska@suse.cz>
Date: Wed, 25 May 2016 09:10:16 +0000 (+0200)
Subject: re PR tree-optimization/71239 (ICE in operand_equal_p (fold-const.c:2769))
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=6aa1abe5f29491a70fda964f13427a82fd65df95;p=gcc.git

re PR tree-optimization/71239 (ICE in operand_equal_p (fold-const.c:2769))

Fix PR tree-optimization/71239.

	* g++.dg/pr71239.C: New test.
	PR tree-optimization/71239
	* tree.c (array_at_struct_end_p): Do not call operand_equal_p
	if DECL_SIZE is NULL.

From-SVN: r236696
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 10b423587bf..cad9dab8cbc 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2016-05-25  Martin Liska  <mliska@suse.cz>
+
+	PR tree-optimization/71239
+	* tree.c (array_at_struct_end_p): Do not call operand_equal_p
+	if DECL_SIZE is NULL.
+
 2016-05-25  Richard Biener  <rguenther@suse.de>
 
 	* timevar.def (TV_TREE_LOOP_IFCVT): Add.
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index f670a902a08..d7a59ad54ce 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2016-05-25  Martin Liska  <mliska@suse.cz>
+
+	* g++.dg/pr71239.C: New test.
+
 2016-05-25  Richard Biener  <rguenther@suse.de>
 
 	* gcc/testsuite/gcc.dg/vect/pr58135.c: Rename to ...
diff --git a/gcc/tree.c b/gcc/tree.c
index 83dc7d8bc90..f4b470b3ce8 100644
--- a/gcc/tree.c
+++ b/gcc/tree.c
@@ -13097,7 +13097,8 @@ array_at_struct_end_p (tree ref)
 
 	 is valid because BUF allocate enough space.  */
 
-      && (!size || operand_equal_p (DECL_SIZE (ref), size, 0))
+      && (!size || (DECL_SIZE (ref) != NULL
+		    && operand_equal_p (DECL_SIZE (ref), size, 0)))
       && !(flag_unconstrained_commons
 	   && TREE_CODE (ref) == VAR_DECL && DECL_COMMON (ref)))
     return false;