Re: [pushed + testcase] Re: [PATCH] Fix GDB hang with remote after error from resume

[Edjunior Machado <edjunior at gmail dot com>]

Hi all,

On Mon, Jan 15, 2018 at 3:52 PM, Yao Qi <qiyaoltc@gmail.com> wrote:

> On Mon, Jan 15, 2018 at 2:43 PM, Andreas Arnez <arnez@linux.vnet.ibm.com>
> wrote:
> >
> > Sergio, now that this is in, we should be able to re-activate the
> > reporting for the s390 (and Power) Buildbots, right?
> >
>
> I am not sure ppc64 issue is resolved.  See
> https://sourceware.org/ml/gdb-patches/2017-12/msg00414.html
> Note that I had a patch to fix fails in
> gdb.threads/process-dies-while-handling-bp.exp
> in this thread, but the tests with gdbserver still hang in some watchpoint
> tests.
>
>
Andreas' patch does fix the gdb.base/watchpoint.exp hang on ppc64*
native-gdbserver, but as Yao mentioned, it is still hanging on
gdb.threads/process-dies-while-handling-bp.exp without his fix (
https://sourceware.org/ml/gdb-patches/2017-12/msg00434.html).

That said, just tested upstream testsuite, with Andreas' patch included,
plus Yao's aforementioned patch and native-gdbserver testrun no longer
hangs. These are the results I got with native-gdbserver on Fedora26:

ppc64le:
                === gdb Summary ===

# of expected passes            50410
# of unexpected failures        550
# of unexpected successes       3
# of expected failures          58
# of unknown successes          4
# of known failures             64
# of unresolved testcases       5
# of untested testcases         49
# of unsupported tests          171
/home/fedora/binutils-gdb.git/build/gdb/gdb version  8.1.50.20180115-git
-nw -nx -data-directory
/home/fedora/binutils-gdb.git/build/gdb/testsuite/../data-directory  -ex
"set auto-connect-native-target off"

ppc64:
                === gdb Summary ===

# of expected passes            50133
# of unexpected failures        1109
# of unexpected successes       3
# of expected failures          58
# of unknown successes          4
# of known failures             65
# of unresolved testcases       6
# of untested testcases         51
# of unsupported tests          162
/home/fedora/binutils-gdb.git/build/gdb/gdb version  8.1.50.20180115-git
-nw -nx -data-directory
/home/fedora/binutils-gdb.git/build/gdb/testsuite/../data-directory  -ex
"set auto-connect-native-target off"

(FWIW, at first glance, gdb.linespec/cpcompletion.exp in ppc64 BE seems to
be one of the main culprits for the whole testrun taking longer (~1h) and
with considerably more failures than in ppc64le, aparently due to the
ppc64's function descriptor.)

Please let me know if you need any additional testing.

Thanks and regards,
Edjunior