tree-pretty-print (dump_generic_node): Test for NULL_TREE before accessing TREE_TYPE.

2011-08-26  Tom de Vries  <tom@codesourcery.com>

	* tree-pretty-print (dump_generic_node): Test for NULL_TREE before
	accessing TREE_TYPE.

From-SVN: r178103

gcc/ChangeLog

+2011-08-26  Tom de Vries  <tom@codesourcery.com>
+
+	* tree-pretty-print (dump_generic_node): Test for NULL_TREE before
+	accessing TREE_TYPE.
+
 2011-08-26  Jiangning Liu  <jiangning.liu@arm.com>
 
        * config/arm/arm.md (*ior_scc_scc): Enable for Thumb2 as well.

gcc/tree-pretty-print.c

@@ -820,6 +820,8 @@ dump_generic_node (pretty_printer *buffer, tree node, int spc, int flags,
 	       infer them and MEM_ATTR caching will share MEM_REFs
 	       with differently-typed op0s.  */
 	    && TREE_CODE (TREE_OPERAND (node, 0)) != INTEGER_CST
+	    /* Released SSA_NAMES have no TREE_TYPE.  */
+	    && TREE_TYPE (TREE_OPERAND (node, 0)) != NULL_TREE
 	    /* Same pointer types, but ignoring POINTER_TYPE vs.
 	       REFERENCE_TYPE.  */
 	    && (TREE_TYPE (TREE_TYPE (TREE_OPERAND (node, 0)))
@@ -1186,6 +1188,8 @@ dump_generic_node (pretty_printer *buffer, tree node, int spc, int flags,
 		     can't infer them and MEM_ATTR caching will share
 		     MEM_REFs with differently-typed op0s.  */
 		  && TREE_CODE (TREE_OPERAND (op0, 0)) != INTEGER_CST
+		  /* Released SSA_NAMES have no TREE_TYPE.  */
+		  && TREE_TYPE (TREE_OPERAND (op0, 0)) != NULL_TREE
 		  /* Same pointer types, but ignoring POINTER_TYPE vs.
 		     REFERENCE_TYPE.  */
 		  && (TREE_TYPE (TREE_TYPE (TREE_OPERAND (op0, 0)))