[Pkg-octave-devel] Bug#743885: octave: Octave triggers an assertion in Mesa

[Thomas Weber]

Package: octave
Version: 3.8.1-1+b1
Severity: normal

I found this bug first in the normal packaged version of Octave in
Debian. The attached stack traces were created with a local build
without optimization to get meaningful stack traces. The code orginates
from matlab2tikz's test suite.

================================================================
$ cat mesatest.m 
x = -pi:pi/10:pi;
y = tan(sin(x)) - sin(tan(x));
y(3) = NaN;
y(7) = Inf;
y(11) = -Inf;
plot(x,y,'--o', 'Color', [0.6,0.2,0.0], ...
                'LineWidth', 1*360/127,...
                'MarkerEdgeColor','k',...
                'MarkerFaceColor',[0.3,0.1,0.0],...
                'MarkerSize', 5*360/127 );
================================================================

$ gdb -q  --args /usr/bin/octave --quiet --persist --eval "mesatest"
Reading symbols from /usr/bin/octave...Reading symbols from /usr/lib/debug/.build-id/02/aaaba0a5a74803e4a94b21f0fd9873fb6f6a8b.debug...done.
done.
(gdb) r
Starting program: /usr/bin/octave --quiet --persist --eval mesatest
warning: Could not load shared library symbols for linux-vdso.so.1.
Do you need "set solib-search-path" or "set sysroot"?
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
process 27392 is executing new program: /usr/bin/octave-cli
warning: Could not load shared library symbols for linux-vdso.so.1.
Do you need "set solib-search-path" or "set sysroot"?
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
octave-cli: ../../../../../../../src/mesa/drivers/dri/i965/brw_eu_emit.c:267: validate_reg: Assertion `execsize >= width' failed.

Program received signal SIGABRT, Aborted.
0x00007ffff46183a9 in __GI_raise (sig=sig at entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
56	../nptl/sysdeps/unix/sysv/linux/raise.c: Datei oder Verzeichnis nicht gefunden.

I am filing the bug right now in the hope that someone has an idea on
how to continue with this - I have no clue whatsoever about Mesa.

	Thomas
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