tree 40dd741cec1cefe435e666722cdf974131321d88
parent fbb0ba491042a7f8fb38f51b2f0538ca8fd074a6
author Ian Rogers <irogers@google.com> 1376587614 -0700
committer Ian Rogers <irogers@google.com> 1376592192 -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.

Change-Id: Ib1e5540df87e2d9ce7570802d624baae7797611f