After commit https://cgit.freedesktop.org/libreoffice/core/commit/?id=975884fbbc3f80a634258ee562037688a42027a9 ofz#7110 ensure join is called on std::exceptions as well as uno::Exception Both gcc and clang are failing on my 32 bit Fedora box. The x86 Tinderboxes have also been failing since this commit. For a sample tinderbox log: https://tinderbox.libreoffice.org/cgi-bin/gunzip.cgi?tree=MASTER&full-log=1522779601.11309 The following is my build log: Testing file:///home/luke/core/sw/qa/core/data/ooxml/fail/EDB-36788-1.docx: Tested file:///home/luke/core/sw/qa/core/data/ooxml/fail/EDB-36788-1.docx: Fail (277ms) Testing file:///home/luke/core/sw/qa/core/data/ooxml/fail/ofz4825-1.docx: No core file identified in directory /home/luke/core/workdir/CppunitTest/sw_filters_test.test.core To show backtraces for crashes during test execution, enable core files with: ulimit -c unlimited Error: a unit test failed, please do one of: make CppunitTest_sw_filters_test CPPUNITTRACE="gdb --args" # for interactive debugging on Linux /home/luke/core/solenv/gbuild/CppunitTest.mk:114: recipe for target '/home/luke/core/workdir/CppunitTest/sw_filters_test.test' failed make[1]: *** [/home/luke/core/workdir/CppunitTest/sw_filters_test.test] Error 1 Makefile:282: recipe for target 'build' failed make: *** [build] Error 2 Note after several hours, I had to manually kill the CppunitTest processes as it appeared to be stuck in an infinite loop. Not sure if the Tinderboxes have a watchdog or are failing differently.