* fold-const.c (const_binop): Add early return for non-tcc_binary.

From-SVN: r220007

gcc/ChangeLog

-2015-01-23  Chen Gang  <gang.chen.5i5j@gmail.com>
+2015-01-22  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* fold-const.c (const_binop): Add early return for non-tcc_binary.
+
+2015-01-22  Chen Gang  <gang.chen.5i5j@gmail.com>
 
 	* toplev.c (init_local_tick): Process the failure when read
 	fails for random_seed.

gcc/fold-const.c

@@ -1562,9 +1562,13 @@ const_binop (enum tree_code code, tree type, tree arg1, tree arg2)
     default:;
     }
 
+  if (TREE_CODE_CLASS (code) != tcc_binary)
+    return NULL_TREE;
+
   /* Make sure type and arg0 have the same saturating flag.  */
   gcc_checking_assert (TYPE_SATURATING (type)
 		       == TYPE_SATURATING (TREE_TYPE (arg1)));
+
   return const_binop (code, arg1, arg2);
 }