我的gdb什么不能attach进程呢？

flyingkisser

自己随便写了一程序，运行时让它阻塞，ps找到pid，然后
gdb
attatch pid
提示我：
(gdb) attach 2944
Attaching to process 2944
/usr/src/gnu/usr.bin/gdb/libgdb/../../../../contrib/gdb/gdb/solib-svr4.c:1443: internal-error: legacy_fetch_link_map_offsets called without legacy link_map support enabled.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n)        
另：系统是FreeBSD5.4
gdb版本是：
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".

flyingkisser

自己顶，实在不解