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Re: [PATCH][BZ #18508] S390: Fix "backtrace() returns infinitely deep stack frames with makecontext()".

Is this patch okay for 2.22?

On 07/09/2015 10:23 AM, Stefan Liebler wrote:
On 07/08/2015 04:45 PM, Carlos O'Donell wrote:
On 07/08/2015 10:43 AM, Carlos O'Donell wrote:
On 07/08/2015 08:00 AM, Stefan Liebler wrote:
On 07/07/2015 09:02 PM, Carlos O'Donell wrote:
On 07/07/2015 01:47 PM, H.J. Lu wrote:
I opened:


Please fix this promptly as glibc 2.22 will be released
shortly and the test results should be clean. If we can't
fix it promptly, then we should revert the test changes.



the testcase seems to be okay, but there is a bug in i686 backtrace
handling if the context was set via makecontext.
If we revert the test changes, the test case will pass, but the bug
is only hidden.

If that's the case then please file a bug on sourceware for
this particular failure, mark the test as XFAIL for i686 and
use a comment to reference the bug when you mark it XFAIL.

Bug 18635 was already filed by H.J, so use that.


This patch marks stdlib/tst-makecontext as XFAIL for i686.
Ok to commit?


2015-07-09  Stefan Liebler  <>

     * sysdeps/i386/i686/Makefile (test-xfail-tst-makecontext):
     New variable.

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