Plug leaked string stream debug object cache in Isolate.

src/isolate.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 11 matching lines @@
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <stdlib.h>
 
 #include "v8.h"
 
+#include "allocation-inl.h"
 #include "ast.h"
 #include "bootstrapper.h"
 #include "codegen.h"
 #include "compilation-cache.h"
 #include "debug.h"
 #include "deoptimizer.h"
 #include "heap-profiler.h"
 #include "hydrogen.h"
 #include "isolate.h"
 #include "lithium-allocator.h"
@@ skipping 1953 matching lines @@
   delete string_tracker_;
   string_tracker_ = NULL;
 
   delete memory_allocator_;
   memory_allocator_ = NULL;
   delete code_range_;
   code_range_ = NULL;
   delete global_handles_;
   global_handles_ = NULL;
 
+  delete string_stream_debug_object_cache_;
+  string_stream_debug_object_cache_ = NULL;
+
   delete external_reference_table_;
   external_reference_table_ = NULL;
 
   delete callback_table_;
   callback_table_ = NULL;
 
 #ifdef ENABLE_DEBUGGER_SUPPORT
   delete debugger_;
   debugger_ = NULL;
   delete debug_;
@@ skipping 437 matching lines @@
 
 #ifdef DEBUG
 #define ISOLATE_FIELD_OFFSET(type, name, ignored)                       \
 const intptr_t Isolate::name##_debug_offset_ = OFFSET_OF(Isolate, name##_);
 ISOLATE_INIT_LIST(ISOLATE_FIELD_OFFSET)
 ISOLATE_INIT_ARRAY_LIST(ISOLATE_FIELD_OFFSET)
 #undef ISOLATE_FIELD_OFFSET
 #endif
 
 } }  // namespace v8::internal