https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68742
--- Comment #2 from John David Anglin <danglin at gcc dot gnu.org> ---
(gdb) r
Starting program: /test/gnu/gcc/objdir/gcc/testsuite/gfortran/event_2.exe
warning: Private mapping of shared library text was not specified
by the executable; setting a breakpoint in a shared library which
is not privately mapped will not work. See the HP-UX 11i v3 chatr
manpage for methods to privately map shared library text.
Program aborted. Backtrace:
Could not print backtrace: backtrace library does not support threads
Program received signal SIGSEGV, Segmentation fault.
backtrace_alloc (state=state@entry=0x0, size=size@entry=4096,
error_callback=error_callback@entry=0x0, data=data@entry=0x0)
at ../../../gcc/libbacktrace/mmap.c:102
102 if (!state->threaded)
(gdb) bt
#0 backtrace_alloc (state=state@entry=0x0, size=size@entry=4096,
error_callback=error_callback@entry=0x0, data=data@entry=0x0)
at ../../../gcc/libbacktrace/mmap.c:102
#1 0xc0000000003438b0 in backtrace_full (state=state@entry=0x0,
skip=skip@entry=0,
callback=callback@entry=0xc000000000347380 <full_callback>,
error_callback=error_callback@entry=0x800003fffdfd8e70,
data=data@entry=0x800003fffdff0bd8)
at ../../../gcc/libbacktrace/backtrace.c:118
#2 0xc0000000003477e8 in _gfortrani_show_backtrace (
in_signal_handler=in_signal_handler@entry=false)
at ../../../gcc/libgfortran/runtime/backtrace.c:156
#3 0xc000000000348c10 in _gfortrani_sys_abort ()
at ../../../gcc/libgfortran/runtime/error.c:178
#4 0xc00000000041e4a4 in _gfortran_abort ()
at ../../../gcc/libgfortran/intrinsics/abort.c:33
#5 0x4000000000004ad0 in MAIN__ ()
at /test/gnu/gcc/gcc/gcc/testsuite/gfortran.dg/coarray/event_2.f90:15
#6 main (argc=<optimized out>, argv=<optimized out>)
at /test/gnu/gcc/gcc/gcc/testsuite/gfortran.dg/coarray/event_2.f90:89
(gdb) p state
$1 = (struct backtrace_state *) 0x0
