I swear, the last time gdb worked right was in 1991 on SunOS 4.1.3.

% gdb foo
[ ... 7 lines of worthless RMS ranting elided ... ]
(gdb) r
Starting program: foo
[New Thread 8192 (LWP 3056)]
Cannot find user-level thread for LWP 3056: generic error
(gdb) quit
The program is running. Exit anyway? (y or n) y
Cannot find thread 8192: generic error
(gdb) k
Kill the program being debugged? (y or n) y
Cannot find thread 8192: generic error
(gdb) quit
The program is running. Exit anyway? (y or n) y
Cannot find thread 8192: generic error
(gdb) ^Z

Suspended
% kill %
% ^M
[4]    Terminated                    gdb foo