Check for truncated registers in process_g_packet

[Yao Qi]

On Tue, Nov 8, 2016 at 10:37 AM, Pedro Alves <palves@redhat.com> wrote:
> On 10/18/2016 05:07 PM, Lionel Flandrin wrote:
>
>>> This patch looks good to me, a few minor comments below about formatting.
>>> Someone else with the approval stamp must look at it, but hopefully it will
>>> save them a bit of work.
>>
>> Thank you for the feedback, here's the updated patch:
>
> This is OK.  I've pushed it in.
>

This patch 9dc193c causes a regression,

$ make check RUNTESTFLAGS="--target_board=native-extended-gdbserver
multi-arch-exec.exp"
FAIL: gdb.multi/multi-arch-exec.exp: continue across exec that changes
architecture

This test passes on the previous commit.  The test
passes also if I revert this commit on mainline.

-- 
Yao (齐尧)