Fix regexp interrupt test.

test/cctest/test-regexp.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 1798 matching lines @@
   ZoneList<CharacterRange> first_only(4, &zone);
   ZoneList<CharacterRange> second_only(4, &zone);
   ZoneList<CharacterRange> both(4, &zone);
 }
 
 
 TEST(Graph) {
   V8::Initialize(NULL);
   Execute("\\b\\w+\\b", false, true, true);
 }
+
+
+class TimeoutThread : public i::Thread {
+ public:
+  explicit TimeoutThread(v8::Isolate* isolate)
+      : Thread("TimeoutThread"), isolate_(isolate) {}
+
+  virtual void Run() {
+    OS::Sleep(500);  // Wait a bit before terminating thread.
+    v8::V8::TerminateExecution(isolate_);
+  }
+
+ private:
+  v8::Isolate* isolate_;
+};
+
+
+// Test that a regular expression execution can be interrupted and
+// survive a garbage collection.
+TEST(RegExpInterruption) {
+  v8::HandleScope scope(CcTest::isolate());
+  LocalContext env;
+
+  TimeoutThread timeout_thread(CcTest::isolate());
+  v8::TryCatch try_catch;
+
+  timeout_thread.Start();
+  // Run a regexp that does not terminate in reasonable time unless forced.
+  CompileRun("/((a*)*)*b/.exec('aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa')");
+  CHECK(try_catch.HasTerminated());
+
+  timeout_thread.Join();
+}