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From: "qiyao at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/18208] Fails in gdb.base/coredump-filter.exp in remote
 testing
Date: Wed, 08 Apr 2015 12:00:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=18208

--- Comment #5 from Yao Qi <qiyao at gcc dot gnu.org> ---
I am running testing for aarch64-linux-gnu target on x86_64 machine, and they
are connected via ssh.

After this remote_exec,

 remote_exec target "sh -c \"echo $filter_flag > /proc/$ipid/coredump_filter\""

I dump the /proc/$ipid/coredump_filter via cat, and it becomes 00000000, which
is a surprise to me.  Dejagnu does remote_exec on build like this,

$ ssh -l yaoqi01 linaro-junor1-1 sh -c 'echo 0x7e > /proc/6160/coredump_filter'

and on target, coredump_filter is zero.

$ cat /proc/6160/coredump_filter 
00000000

However, I remove "sh -c", like:

$ /usr/bin/ssh -l yaoqi01 linaro-junor1-1 'echo 0x7e >
/proc/6160/coredump_filter'

then the coredump_filter is correctly set,

$ cat /proc/6160/coredump_filter 
0000007e

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