The siginfo_t parameter allows us to show what process sent a signal or the crashing address. Additionally, it allows us to determine if the crashing signal was indeed sent due to a crash. The selftest tst_crashes produces now: $ QTEST_DISABLE_STACK_DUMP=1 ./crashes ********* Start testing of tst_Crashes ********* Config: Using QtTest library 6.4.0, Qt 6.4.0 (x86_64-little_endian-lp64 shared (dynamic) debug build; by GCC 11.2.1 20220420 [revision 691af15031e00227ba6d5935c1d737026cda4129]), opensuse-tumbleweed 20220428 PASS : tst_Crashes::initTestCase() Received signal 11 (SIGSEGV), code 1, for address 0x0000000000000004 Function time: 0ms, total time: 0ms [1] 201995 segmentation fault (core dumped) QTEST_DISABLE_STACK_DUMP=1 ./crashes The last line comes from the shell. The code isn't decoded, but on Linux it's a SEGV_MAPERR. macOS prints exactly the same thing. I've updated one of the expected_crashes_*.txt output that doesn't seem possible (the "Received a fatal error" message does not appear in Qt anywhere). Pick-to: 6.4 Change-Id: I5ff8e16fcdcb4ffd9ab6fffd16ebc8391234f0e2 Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>