Fix Regress2237 on gc stress builder.

test/cctest/test-heap.cc

 // Copyright 2012 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 2364 matching lines @@
   // size of the first page a little in SizeOfFirstPage in spaces.cc.  The
   // first page should be small in order to reduce memory used when the VM
   // boots, but if the 20 small arrays don't fit on the first page then that's
   // an indication that it is too small.
   HEAP->CollectAllAvailableGarbage("triggered really hard");
   CHECK_EQ(1, old_pointer_space->CountTotalPages());
 }
 
 
 TEST(Regress2237) {
+  i::FLAG_stress_compaction = false;
   CcTest::InitializeVM();
   Isolate* isolate = Isolate::Current();
   Factory* factory = isolate->factory();
   v8::HandleScope scope(CcTest::isolate());
   Handle<String> slice(HEAP->empty_string());
 
   {
     // Generate a parent that lives in new-space.
     v8::HandleScope inner_scope(CcTest::isolate());
     const char* c = "This text is long enough to trigger sliced strings.";
@@ skipping 777 matching lines @@
              "    var a = new Array(n);"
              "    for (var i = 0; i < n; i += 100) a[i] = i;"
              "};"
              "f(10 * 1024 * 1024);");
   IncrementalMarking* marking = HEAP->incremental_marking();
   if (marking->IsStopped()) marking->Start();
   // This big step should be sufficient to mark the whole array.
   marking->Step(100 * MB, IncrementalMarking::NO_GC_VIA_STACK_GUARD);
   ASSERT(marking->IsComplete());
 }