gdb problem with 6.1-RELEASE-p3

[Jim Segrave]

I was trying to debug a threaded application on my machine (Sony Vaio
laptop, i386 architecture)

I'm running 6.1-RELEASE-p3 as downgrade from RELENG_6 (after upgrading
5.4->5.5) 

When I invoke gdb on a threaded application, I get the following:

Script started on Thu Aug 24 13:32:12 2006
jes at jes-2.demon.nl:/home/jes/gnubg% gdb ./gnubg
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i386-marcel-freebsd"...
(gdb) b main
Breakpoint 1 at 0x8078a58: file gnubg.c, line 7109.
(gdb) r -t
Starting program: /usr/home/jes/gnubg/gnubg -t
warning: Unable to get location for thread creation breakpoint: generic error
Error while reading shared library symbols:
PT_LWPINFO: Invalid argument.
no thread to satisfy query
Stopped due to shared library event
(gdb) c
Continuing.
no thread to satisfy query
0x282381c0 in r_debug_state () from /libexec/ld-elf.so.1
(gdb) c
Continuing.
no thread to satisfy query
0x282381c0 in r_debug_state () from /libexec/ld-elf.so.1
(gdb) q
The program is running.  Exit anyway? (y or n) y
jes at jes-2.demon.nl:/home/jes/gnubg% exit
exit

Script done on Thu Aug 24 13:32:41 2006


Anyone have any ideas what is causing this?
The version from /usr/ports/devel/gdb6 doesn't do this.

-- 
Jim Segrave           jes at jes-2.demon.nl