ppc64* native-gdbserver testsuite hangs on gdb.threads/process-dies-while-handling-bp.exp

[Yao Qi]

Yao Qi <qiyaoltc@gmail.com> writes:

> As described in PR 18749, GDB/GDBserver may get an error on accessing
> memory or register because the thread may disappear.  However, some
> path doesn't expect the error.  This patch fixes this problem by
> marking the register unavailable when PTRACE_PEEKUSER fails instead
> of throwing error.
>
> gdb/gdbserver:
>
> 2017-12-19  Yao Qi  <yao.qi@linaro.org>
>
> 	PR gdb/18749
> 	* linux-low.c (fetch_register): Call supply_register instead of
> 	error.

I pushed it in to master.

-- 
Yao (齐尧)