[MERGE chakra-core#2544 @pleath] Don't attempt to get redeferred FunctionBody from JavascriptExceptionObject

pleath · pleath · commit fa03139ec831 · 2017-02-16T15:55:47.000-08:00
Merge pull request chakra-core#2544 from pleath:9774444
diff --git a/lib/Runtime/Language/JavascriptExceptionObject.cpp b/lib/Runtime/Language/JavascriptExceptionObject.cpp
@@ -137,7 +137,15 @@ namespace Js
     FunctionBody* JavascriptExceptionObject::GetFunctionBody() const
     {
         // If it is a throwing function; it must be deserialized
-        return exceptionContext.ThrowingFunction() ? exceptionContext.ThrowingFunction()->GetFunctionBody() : NULL;
+        if (exceptionContext.ThrowingFunction())
+        {
+            ParseableFunctionInfo *info = exceptionContext.ThrowingFunction()->GetParseableFunctionInfo();
+            if (info->IsFunctionBody())
+            {
+                return info->GetFunctionBody();
+            }
+        }
+        return nullptr;
     }
 
     JavascriptExceptionContext::StackFrame::StackFrame(JavascriptFunction* func, const JavascriptStackWalker& walker, bool initArgumentTypes)
