Get gcc to check that we don't ignore return values of functions that can...

test/mjsunit/const-eval-init.js

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 49 matching lines @@
 
 function testAssignmentArgument(x) {
   function local() {
     var source = "delete x; const x = 7; assertEquals(7, x)";
     eval(source);
   }
   local();
   assertEquals(7, x);
 }
 
-testAssignmentArgument();
+for (var i = 0; i < 10000; i++) {
+  testAssignmentArgument();
+}
 assertEquals(6, x);
 
 __defineSetter__('x', function() { throw 42; });
 function testAssignGlobalThrows() {
   // Initialization turns into assignment to global 'x' which
   // throws an exception.
   var source = "delete x; const x = 8";
   eval(source);
 }
 
@@ skipping 21 matching lines @@
   var x = 12;
   function local() {
     var source = "delete x; const x = 13; assertEquals(13, x)";
     eval(source);
   }
   local();
   assertEquals(13, x);
 }
 
 testAssignSurroundingContextSlot();