gdb's stack trace

trace.txt (text/plain), 634 bytes, created by Raymond Jennings on 2017-10-29 08:06:04 UTC

[New LWP 27177]
Core was generated by `pwck -s passwd shadow'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  _IO_new_fclose (fp=0x0) at iofclose.c:53
53	  if (fp->_IO_file_flags & _IO_IS_FILEBUF)
#0  _IO_new_fclose (fp=0x0) at iofclose.c:53
#1  0x0000000000404fb1 in commonio_close (db=db@entry=0x60a8e0 <passwd_db>) at commonio.c:921
#2  0x000000000040616e in commonio_close (db=db@entry=0x60a8e0 <passwd_db>) at commonio.c:914
#3  0x000000000040473a in pw_close () at pwio.c:179
#4  0x00000000004022fb in close_files (changed=true) at pwck.c:320
#5  main (argc=<optimized out>, argv=<optimized out>) at pwck.c:877