[Octave-bug-tracker] [bug #57591] Segmentation faults when running the test suite (mostly with clang)

[John W. Eaton]

Follow-up Comment #133, bug #57591 (project octave):

I disabled the buildbot jobs for the build mentioned in comment #132 so that
it would not be wiped out by a later execution of the buildbot
stable-clan-debian build.

I didn't find a core file there.  Maybe I missed it?  Anyway, I was able to
execute the tests in a loop until I triggered a segfault.  The output from
make at the time of the segfault was


sparse/spconvert.m .............................................fatal: caught
signal Segmentation fault -- stopping myself...
/bin/bash: line 1: 4174536 Segmentation fault      (core dumped) /bin/bash
../run-octave --no-init-file --silent --no-history -p
/scratch/buildbot/workers/jwe-debian-x86_64-0/stable-clang-debian/build/test/mex
/scratch/buildbot/workers/jwe-debian-x86_64-0/stable-clang-debian/build/../src/test/fntests.m
/scratch/buildbot/workers/jwe-debian-x86_64-0/stable-clang-debian/build/../src/test
make[3]: *** [Makefile:31664: check-local] Error 139
make[3]: Leaving directory
'/scratch/buildbot/workers/jwe-debian-x86_64-0/stable-clang-debian-save/build'
make[2]: *** [Makefile:27801: check-am] Error 2
make[2]: Leaving directory
'/scratch/buildbot/workers/jwe-debian-x86_64-0/stable-clang-debian-save/build'
make[1]: *** [Makefile:27503: check-recursive] Error 1
make[1]: Leaving directory
'/scratch/buildbot/workers/jwe-debian-x86_64-0/stable-clang-debian-save/build'
make: *** [Makefile:27803: check] Error 2


The full strack trace for all threads is attached.  A simple "where" command
in gdb shows the process was in thread 1 at the time of the fault.  The
interpreter appears to be attempting to execute a shell command with "system".
 There is no direct call to system in the tests for spconvert.m, so maybe it
is from a call to "print_usage" when it is calling makeinfo to format the help
text?


(file #50140)
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Additional Item Attachment:

File name: stable-clang-debian-stack-trace.txt Size:78 KB
   
<https://file.savannah.gnu.org/file/stable-clang-debian-stack-trace.txt?file_id=50140>



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