Join threads after stopping.

test/cctest/test-mark-compact.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 548 matching lines @@
     } else {                            // 32-bit.
       if (v8::internal::Snapshot::IsEnabled()) {
         CHECK_LE(delta, 3100 * 1024);
       } else {
         CHECK_LE(delta, 3400 * 1024);
       }
     }
   }
 }
 
+
+intptr_t ShortLivingIsolate() {
+  v8::Isolate* isolate = v8::Isolate::New();
+  { v8::Isolate::Scope isolate_scope(isolate);
+    v8::Locker lock(isolate);
+    v8::HandleScope handle_scope;
+    v8::Local<v8::Context> context = v8::Context::New(isolate);
+    CHECK(!context.IsEmpty());
+  }
+  isolate->Dispose();
+  return MemoryInUse();
+}
+
+
+TEST(RegressJoinThreadsOnIsolateDeinit) {
+  intptr_t first_size = ShortLivingIsolate();
+  for (int i = 0; i < 10; i++) {
+    CHECK_EQ(first_size, ShortLivingIsolate());
+  }
+}
+
 #endif  // __linux__ and !USE_SIMULATOR