Clear pending exception on stack overflow in the parser

BUG=450960
LOG=n

Review URL: https://codereview.chromium.org/858213003

Cr-Commit-Position: refs/heads/master@{#26390}

src/runtime/runtime-internal.cc

@@ -166,14 +166,20 @@ RUNTIME_FUNCTION(Runtime_RenderCallSite) {
   Zone zone;
   if (location.function()->shared()->is_function()) {
     CompilationInfo info(location.function(), &zone);
-    if (!Parser::Parse(&info)) return isolate->heap()->empty_string();
+    if (!Parser::Parse(&info)) {
+      isolate->clear_pending_exception();
+      return isolate->heap()->empty_string();
+    }
     CallPrinter printer(isolate, &zone);
     const char* string = printer.Print(info.function(), location.start_pos());
     return *isolate->factory()->NewStringFromAsciiChecked(string);
   }
 
   CompilationInfo info(location.script(), &zone);
-  if (!Parser::Parse(&info)) return isolate->heap()->empty_string();
+  if (!Parser::Parse(&info)) {
+    isolate->clear_pending_exception();
+    return isolate->heap()->empty_string();
+  }
   CallPrinter printer(isolate, &zone);
   const char* string = printer.Print(info.function(), location.start_pos());
   return *isolate->factory()->NewStringFromAsciiChecked(string);

test/mjsunit/regress/regress-crbug-450960.js

+// Copyright 2015 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.
+
+// Flags: --stack-size=70
+
+"a".replace(/a/g, "");
+
+function test() {
+   try {
+     test();
+   } catch(e) {
+     "b".replace(/(b)/g, new []);
+   }
+}
+
+try {
+  test();
+} catch (e) {
+}