tree bc309303ea13294f8ff188a5a384d7d44ebf7920
parent 84d26f467f7de8bdbb0d230458135fe1b6b2a99d
author Ian Lance Taylor <iant@golang.org> 1492642592 -0700
committer Ian Lance Taylor <iant@golang.org> 1492651483 +0000

runtime: don't crash if panicstring called with no m

It's possible for runtime_panicstring to be called with no m if a
signal handler, or scheduler innards, do something wrong.  If that
happens carry on with the panic rather than crashing.

Change-Id: I8ad04f1f9d7655b4a4e9a983f439f2cc3ac6b269
Reviewed-on: https://go-review.googlesource.com/41137
Reviewed-by: Than McIntosh <thanm@google.com>