[fuzzer] Force a GC before shutting down isolates

test/fuzzer/fuzzer-support.cc

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "test/fuzzer/fuzzer-support.h"
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
@@ skipping 50 matching lines @@
 FuzzerSupport::~FuzzerSupport() {
   {
     v8::Isolate::Scope isolate_scope(isolate_);
     while (v8::platform::PumpMessageLoop(platform_, isolate_)) /* empty */
       ;
 
     v8::HandleScope handle_scope(isolate_);
     context_.Reset();
   }
 
+  isolate_->LowMemoryNotification();

[ulan, 2016/05/06 12:27:11]

Wouldn't RequestGarbageCollectionForTesting be more descriptive here?

   isolate_->Dispose();
   isolate_ = nullptr;
 
   delete allocator_;
   allocator_ = nullptr;
 
   v8::V8::Dispose();
   v8::V8::ShutdownPlatform();
 
   delete platform_;
@@ skipping 13 matching lines @@
   return handle_scope.Escape(context);
 }
 
 }  // namespace v8_fuzzer
 
 extern "C" int LLVMFuzzerInitialize(int* argc, char*** argv) {
   v8_fuzzer::g_fuzzer_support = new v8_fuzzer::FuzzerSupport(argc, argv);
   atexit(&v8_fuzzer::DeleteFuzzerSupport);
   return 0;
 }