b:~[0]# export LC_ALL=C
b:~[0]# finger
finger: /dev//pts/40: No such file or directory
Login    Name                    Tty      Idle  Login Time   Office     Office Phone
root     root                    tty1      98d  Jun 21  2024
root     root                    pts/9          Feb  1 23:21 (2a01:261:e80:4887:e::1)
root     root                   *tty2     166d  Jul 25  2024
root     root                    pts/0     25d  Oct 26 16:30 (:0)
Segmentation fault (core dumped)
b:~[139]# gdb /usr/bin/finger core
Reading symbols from /usr/bin/finger...
Reading symbols from /usr/lib/debug//usr/bin/finger.debug...
[New LWP 8033]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `finger'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  stimeprint (w=0x556f1bb73050) at sprint.c:161
161		if (!delta->tm_yday)
(gdb) bt     
#0  stimeprint (w=0x556f1bb73050) at sprint.c:161
#1  sflag_print () at sprint.c:110
#2  0x0000556f1a44daee in main (argc=<optimized out>, argv=0x7ffc170ea790) at finger.c:173
(gdb) p delta
$1 = (struct tm *) 0x0
(gdb) list
156	
157	static void stimeprint(WHERE *w) {
158		register struct tm *delta;
159	
160		delta = gmtime(&w->idletime);
161		if (!delta->tm_yday)
162			if (!delta->tm_hour)
163				if (!delta->tm_min)
164					(void)xprintf("     ");
165				else
(gdb) quit
b:~[0]#