Debian bug report logs - #1340
ncurses setupterm() handles unknown terminals badly.

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From mdd.comm.mot.com!mitchell Sat Sep  9 11:08:14 1995
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Date: Sat, 9 Sep 1995 11:08:07 -0700 (PDT)
From: Bill Mitchell <mitchell@mdd.comm.mot.com>
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To: debian-bugs@pixar.com
Subject: ncurses setupterm() handles unknown terminals badly.
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PACKAGE:  ncurses
VERSION:  1.9.3

terminfo(3ncurses)			     terminfo(3ncurses)
[...]
       int setupterm(char *term, int fildes, int *errret);
[...]
       int setterm(char *term);
[...]
       If errret is not null, then setupterm returns  OK  or  ERR
       and  stores  a  status  value in the integer pointed to by
       errret.	A status of 1 in errret is normal, 0  means  that
       the  terminal  could  not  be found, and -1 means that the
       terminfo database could not be found.  If errret is  null,
       setupterm  prints  an  error message upon finding an error
       and exits. [...]

Script started on Sun Sep 10 10:47:26 1995

root:~# cat x.c
#include <ncurses/curses.h>
#include <ncurses/term.h>
main() {
    int rv;
    rv = setupterm((char *) 0, 1, (int *) 0);
    exit(rv);
}
 
root:~# TERM=crap
root:~# time ./x
"/etc/termcap", line 5: terminal 'linux', Unknown Capability - 'sb'
"/etc/termcap", line 38: terminal 'xterm', Unknown Capability - 'kn'
[... continues in this vein for several hundred lines ...]
"/etc/termcap", line 3618: terminal 'scoansi', Unknown Capability - 'Gu'
"/etc/termcap", line 3618: terminal 'scoansi', Unknown Capability - 'Gv'
[... very long delay ...]
'crap': Unknown terminal type.
Command had non-zero exit status 1
66.94user 1.84system 1:09.98elapsed 98%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (41major+368minor)pagefaults 0swaps
root:~# 
Script done on Sun Sep 10 10:49:23 1995

Note that this took over a minute to complete.

mitchell@mdd.comm.mot.com (Bill Mitchell)