tree b6dfd2d5f4ebff454c75fb435c438af56be78e29
parent 7571e8b761ebc2c923525e12ea9fcf07e62cb33e
author Ian Rogers <irogers@google.com> 1376587614 -0700
committer Brian Carlstrom <bdc@google.com> 1376950414 -0700

Prevent segvs in JNI.

A segv in JNI code (without CheckJNI) is hard to debug as we fail to see
stacks, pending exceptions.. Make JNI code robust to null arguments, but don't
go to the lengths that CheckJNI does in also sanity checking arguments, the
priority here is just to stop the VM from crashing.

Bug 10305723

Also, allow an unknown throw location not to crash exception dumping.

Found/useful for debugging bug 10331039.

(cherry picked from commit bc939663ccfbe0c648dd6a3670041510aca82420)

Change-Id: Id0203db7d9e320d45ae5ba25d2b63939c79e5c16