review (S) for 6982537: Crash in Node*step_through_mergemem

Tom Rodriguez tom.rodriguez at
Wed Sep 22 10:36:18 PDT 2010

6982537: Crash in Node*step_through_mergemem

Code which was examining the type of memory was attempting to
introspect on the klass of TypeOopPtr but wasn't checking for NULL
which led to crashes when it looked at a primitive array type.  The
fix is to check for NULL.  I also updated similar code in escape.cpp
and corrected variable names to match the types.  Tested with failing
test from bug report.


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