Bug#1081952: gtk4: FTBFS on powerpc: gtk:gtk / sorter test fails

[Simon McVittie]

Source: gtk4
Version: 4.16.1+ds-2
Severity: normal
Tags: ftbfs
X-Debbugs-Cc: debian-powerpc at lists.debian.org
User: debian-powerpc at lists.debian.org
Usertags: powerpc

gtk4 passes most of its test suite on powerpc, but fails one test:

https://buildd.debian.org/status/fetch.php?pkg=gtk4&arch=powerpc&ver=4.16.1%2Bds-2&stamp=1726438341&raw=0
> ================================== 163/692 ===================================
> test:         gtk:gtk / sorter
> start time:   22:08:07
> duration:     0.07s
> result:       killed by signal 6 SIGABRT
> command:      GTK_A11Y=test GDK_DEBUG=default-settings MESON_TEST_ITERATION=1 GSETTINGS_SCHEMA_DIR=/<<PKGBUILDDIR>>/debian/build/deb/gtk G_TEST_BUILDDIR=/<<PKGBUILDDIR>>/debian/build/deb/testsuite/gtk G_TEST_SRCDIR=/<<PKGBUILDDIR>>/testsuite/gtk GDK_BACKEND=x11 GSK_RENDERER=cairo MALLOC_PERTURB_=63 UBSAN_OPTIONS=halt_on_error=1:abort_on_error=1:print_summary=1:print_stacktrace=1 TEST_OUTPUT_SUBDIR=x11 LD_LIBRARY_PATH=/<<PKGBUILDDIR>>/debian/build/deb/gtk MSAN_OPTIONS=halt_on_error=1:abort_on_error=1:print_summary=1:print_stacktrace=1 GTK_DEBUG=css GTK_CSD=1 GSETTINGS_BACKEND=memory ASAN_OPTIONS=halt_on_error=1:abort_on_error=1:print_summary=1 G_ENABLE_DIAGNOSTIC=0 /<<PKGBUILDDIR>>/debian/build/deb/testsuite/gtk/sorter --tap -k
> ----------------------------------- stdout -----------------------------------
> TAP version 14
> # random seed: R02S6b2c8c0fedad0d1281925bd23a570430
> 1..19
> # Start of sorter tests
> ok 1 /sorter/simple
> ok 2 /sorter/string
> ok 3 /sorter/change
> ok 4 /sorter/multi
> ok 5 /sorter/stable
> # Start of numeric tests
> ok 6 /sorter/numeric/boolean
> ok 7 /sorter/numeric/char
> ok 8 /sorter/numeric/uchar
> ok 9 /sorter/numeric/int
> ok 10 /sorter/numeric/uint
> ok 11 /sorter/numeric/float
> ok 12 /sorter/numeric/double
> ok 13 /sorter/numeric/long
> ok 14 /sorter/numeric/ulong
> not ok /sorter/numeric/int64 - ERROR:../../../testsuite/gtk/sorter.c:439:test_numeric_int64: assertion failed (model == "1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20"): ("10 12 18 19 13 7 5 3 6 9 16 15 20 1 11 4 2 17 14 8" == "1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20")
> Bail out!

I don't know whether this is a bug in the test, or a bug in the part of
GTK that is being tested. It might be a problem with pointers or varargs
or something (powerpc is 32-bit big-endian, which is unusual these days).

The same test fails on hppa, which I think might also be 32-bit big-endian?

That test does succeed on ppc64 and s390x, which are 64-bit big-endian.

The Debian GNOME team is unlikely to prioritize investigating this,
because our focus is the release architectures where GNOME is most
commonly used, but tested patches (ideally sent upstream) would be
appreciated.

Thanks,
    smcv