testListLabelPDFExport segfaulting

[Dan Horák]

Hello,

we are seeing segfaults in the testListLabelPDFExport from
CppunitTest_sw_globalfilter at least on aarch64 and ppc64le in Fedora.
To some degree it's related to
https://git.libreoffice.org/core/+/ea0f9776ed8e7e9809853d292923b86756274564
because reverting the commit removes the segfault, but the test still
fails on some assert. The 7-6-branching-point has no such issue.

...
[Thread 0x7fffd2a0e7a0 (LWP 2064868) exited]
Test::testDateFormFieldCharacterFormatting finished in: 1481ms
[_RUN_____] testListLabelPDFExport::TestBody
private:factory/swriter:

Thread 1 "cppunittester" received signal SIGSEGV, Segmentation fault.
testListLabelPDFExport::TestBody (this=0x102a95d0) at /usr/include/c++/13/bits/unique_ptr.h:199
199	      pointer    _M_ptr() const noexcept { return std::get<0>(_M_t); }
(gdb) where
#0  testListLabelPDFExport::TestBody() (this=0x102a95d0) at /usr/include/c++/13/bits/unique_ptr.h:199
#1  0x00007fffdc9aaf4c in std::__invoke_impl<void, void (testListLabelPDFExport::*&)(), testListLabelPDFExport*&>(std::__invoke_memfun_deref, void (testListLabelPDFExport::*&)(), testListLabelPDFExport*&) (__f=<optimized out>, __t=<optimized out>) at /usr/include/c++/13/bits/invoke.h:71
#2  std::__invoke<void (testListLabelPDFExport::*&)(), testListLabelPDFExport*&>(void (testListLabelPDFExport::*&)(), testListLabelPDFExport*&) (__fn=<optimized out>)
    at /usr/include/c++/13/bits/invoke.h:96
#3  std::_Bind<void (testListLabelPDFExport::*(testListLabelPDFExport*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (__args=<optimized out>, this=<optimized out>)
    at /usr/include/c++/13/functional:506
#4  std::_Bind<void (testListLabelPDFExport::*(testListLabelPDFExport*))()>::operator()<, void>() (this=<optimized out>) at /usr/include/c++/13/functional:591
#5  std::__invoke_impl<void, std::_Bind<void (testListLabelPDFExport::*(testListLabelPDFExport*))()>&>(std::__invoke_other, std::_Bind<void (testListLabelPDFExport::*(testListLabelPDFExport*))()>&) (__f=<optimized out>) at /usr/include/c++/13/bits/invoke.h:61
#6  std::__invoke_r<void, std::_Bind<void (testListLabelPDFExport::*(testListLabelPDFExport*))()>&>(std::_Bind<void (testListLabelPDFExport::*(testListLabelPDFExport*))()>&)
    (__fn=<optimized out>) at /usr/include/c++/13/bits/invoke.h:111
#7  std::_Function_handler<void (), std::_Bind<void (testListLabelPDFExport::*(testListLabelPDFExport*))()> >::_M_invoke(std::_Any_data const&) (__functor=<optimized out>)
    at /usr/include/c++/13/bits/std_function.h:290
#8  0x00007fffdc9ab424 in std::function<void ()>::operator()() const (this=<optimized out>) at /usr/include/c++/13/bits/std_function.h:591
#9  CppUnit::TestCaller<testListLabelPDFExport>::runTest() (this=<error reading variable: value has been optimized out>)
    at /home/sharkcz/projects/libreoffice/workdir/UnpackedTarball/cppunit/include/cppunit/TestCaller.h:175
#10 0x00007ffff7ebc578 in CppUnit::TestCaseMethodFunctor::operator()() const () at /home/sharkcz/projects/libreoffice/workdir/UnpackedTarball/cppunit/src/cppunit/.libs/libcppunit-1.15.so.1
#11 0x00007fffdd0102fc in (anonymous namespace)::Protector::protect(CppUnit::Functor const&, CppUnit::ProtectorContext const&) (this=<optimized out>, functor=<optimized out>)
    at /home/sharkcz/projects/libreoffice/test/source/vclbootstrapprotector.cxx:46
#12 0x00007ffff7eb303c in CppUnit::ProtectorChain::ProtectFunctor::operator()() const ()
    at /home/sharkcz/projects/libreoffice/workdir/UnpackedTarball/cppunit/src/cppunit/.libs/libcppunit-1.15.so.1
#13 0x00007fffe9a5067c in (anonymous namespace)::Prot::protect(CppUnit::Functor const&, CppUnit::ProtectorContext const&) (this=<optimized out>, functor=<optimized out>)
    at /home/sharkcz/projects/libreoffice/unotest/source/cpp/unobootstrapprotector/unobootstrapprotector.cxx:78
#14 0x00007ffff7eb303c in CppUnit::ProtectorChain::ProtectFunctor::operator()() const ()
    at /home/sharkcz/projects/libreoffice/workdir/UnpackedTarball/cppunit/src/cppunit/.libs/libcppunit-1.15.so.1


		Dan