From 5022adb6ad70d24d2d7491912e5ce2cad763f4ed Mon Sep 17 00:00:00 2001
From: Marshall Greenblatt <magreenblatt@gmail.com>
Date: Fri, 21 Oct 2011 14:25:14 +0000
Subject: [PATCH] Add handling for empty V8 exception messages (issue #342).

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@331 5089003a-bbd8-11dd-ad1f-f1f9622dbc98
---
 libcef/v8_impl.cc | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/libcef/v8_impl.cc b/libcef/v8_impl.cc
index 11e2b1766..eb69a4323 100644
--- a/libcef/v8_impl.cc
+++ b/libcef/v8_impl.cc
@@ -1030,10 +1030,15 @@ bool CefV8ValueImpl::ExecuteFunctionWithContext(
 
   v8::TryCatch try_catch;
   v8::Local<v8::Value> func_rv = func->Call(recv, argc, argv);
-  if (try_catch.HasCaught())
-    GetCefString(try_catch.Message()->Get(), exception);
-  else
+  if (try_catch.HasCaught()) {
+    v8::Local<v8::Message> msg = try_catch.Message();
+    if (msg.IsEmpty())
+      exception = "CEF received an empty exception message.";
+    else
+      GetCefString(msg->Get(), exception);
+  } else {
     retval = new CefV8ValueImpl(func_rv);
+  }
 
   return true;
 }