Properly handle stack overflows in the AST graph builder.

src/compiler/pipeline.cc

 // Copyright 2014 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 "src/compiler/pipeline.h"
 
 #include <fstream>  // NOLINT(readability/streams)
 #include <sstream>
 
 #include "src/base/platform/elapsed-timer.h"
@@ skipping 301 matching lines @@
   PipelineData data(info(), &zone_pool, pipeline_statistics.get());
 
   data.source_positions()->AddDecorator();
 
   Node* context_node;
   {
     PhaseScope phase_scope(pipeline_statistics.get(), "graph builder");
     ZonePool::Scope zone_scope(data.zone_pool());
     AstGraphBuilderWithPositions graph_builder(
         zone_scope.zone(), info(), data.jsgraph(), data.source_positions());
-    graph_builder.CreateGraph();
+    if (!graph_builder.CreateGraph()) return Handle<Code>::null();
     context_node = graph_builder.GetFunctionContext();
   }
 
   VerifyAndPrintGraph(data.graph(), "Initial untyped", true);
 
   {
     PhaseScope phase_scope(pipeline_statistics.get(),
                            "early control reduction");
     SourcePositionTable::Scope pos(data.source_positions(),
                                    SourcePosition::Unknown());
@@ skipping 294 matching lines @@
 }
 
 
 void Pipeline::TearDown() {
   InstructionOperand::TearDownCaches();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8