.
Thread 1 (LWP 16433):
#0  0x00007f3d1cdaff79 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
        resultvar = 0
        pid = 16433
        selftid = 16433
#1  0x00007f3d1cdb34c8 in __GI_abort () at abort.c:118
        act = {__sigaction_handler = {sa_handler = 0x0, sa_sigaction = 0x0}, sa_mask = {__val = {18446744073709551615 <repeats 16 times>}}, sa_flags = 0, sa_restorer = 0x0}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00000000004404af in programming_error ()
No symbol table info available.
#3  0x00000000004b4970 in ?? ()
No symbol table info available.
#4  0x00000000004729b6 in sh_xrealloc ()
No symbol table info available.
#5  0x0000000000423819 in ?? ()
No symbol table info available.
#6  0x0000000000426592 in ?? ()
No symbol table info available.
#7  0x0000000000429b74 in yyparse ()
No symbol table info available.
#8  0x0000000000420e5b in parse_command ()
No symbol table info available.
#9  0x00000000004780a1 in parse_and_execute ()
No symbol table info available.
#10 0x000000000042ca2b in execute_variable_command ()
No symbol table info available.
#11 0x0000000000420e43 in parse_command ()
No symbol table info available.
#12 0x0000000000420f2c in read_command ()
No symbol table info available.
#13 0x0000000000421129 in reader_loop ()
No symbol table info available.
#14 0x000000000041f6c9 in main ()
No symbol table info available.