[GC] Check for incremental marking when a GC is triggered on reaching the external allocation limit

test/cctest/test-api.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 12556 matching lines @@
            isolate->AdjustAmountOfExternalAllocatedMemory(-kSize));
   const int64_t kTriggerGCSize =
       v8::internal::Internals::kExternalAllocationLimit + 1;
   CHECK_EQ(baseline + kTriggerGCSize,
            isolate->AdjustAmountOfExternalAllocatedMemory(kTriggerGCSize));
   CHECK_EQ(baseline,
            isolate->AdjustAmountOfExternalAllocatedMemory(-kTriggerGCSize));
 }
 
 
+TEST(Regress51719) {
+  i::FLAG_incremental_marking = false;
+  CcTest::InitializeVM();
+
+  const int64_t kTriggerGCSize =
+      v8::internal::Internals::kExternalAllocationLimit + 1;
+  v8::Isolate* isolate = CcTest::isolate();
+  isolate->AdjustAmountOfExternalAllocatedMemory(kTriggerGCSize);
+}
+
+
 // Regression test for issue 54, object templates with internal fields
 // but no accessors or interceptors did not get their internal field
 // count set on instances.
 THREADED_TEST(Regress54) {
   LocalContext context;
   v8::Isolate* isolate = context->GetIsolate();
   v8::HandleScope outer(isolate);
   static v8::Persistent<v8::ObjectTemplate> templ;
   if (templ.IsEmpty()) {
     v8::EscapableHandleScope inner(isolate);
@@ skipping 9224 matching lines @@
   CHECK(try_catch.HasTerminated());
 }
 
 
 TEST(EstimatedContextSize) {
   v8::Isolate* isolate = CcTest::isolate();
   v8::HandleScope scope(isolate);
   LocalContext env;
   CHECK(50000 < env->EstimatedSize());
 }