Issue 35001: Fallback to Thread Context on bad Exception Context

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@418 4c0a9323-5329-0410-9bdc-e9ce6186880e

src/processor/minidump_processor.cc

@@ -169,8 +169,10 @@ ProcessResult MinidumpProcessor::Process(
         // of the thread's own context.  For the crashed thread, the thread's
         // own context is the state inside the exception handler.  Using it
         // would not result in the expected stack trace from the time of the
-        // crash.
-        context = exception->GetContext();
+        // crash. If the exception context is invalid, however, we fall back
+        // on the thread context.
+        MinidumpContext * ctx = exception->GetContext();
+        context = ctx ? ctx : thread->GetContext();
       }
     }