https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92191
--- Comment #7 from John Watts <john_watts at isoparix dot com> --- (gdb) backtrace #0 0x00000001004fcf20 in ?? () #1 0x00000001004fd4c9 in ?? () #2 0x00000001004fd6d0 in ?? () #3 0x000000010050aac4 in ?? () #4 0x00000001004983af in ?? () #5 0x00000001004df32b in ?? () #6 0x00000001008fd8ac in ?? () #7 0x00000001010e7b8d in ?? () #8 0x0000000101107545 in ?? () #9 0x000000018004a816 in _cygwin_exit_return () from /usr/bin/cygwin1.dll #10 0x0000000180048353 in _cygtls::call2(unsigned int (*)(void*, void*), void*, void*) () from /usr/bin/cygwin1.dll #11 0x0000000180048404 in _cygtls::call(unsigned int (*)(void*, void*), void*) () from /usr/bin/cygwin1.dll #12 0x0000000000000000 in ?? () Backtrace stopped: previous frame inner to this frame (corrupt stack?) (gdb)