Can't attach to child using gdb-5.1.1 on Linux

[Andrew Cagney]

> I have a process that forks a child.  If I try to attach to the
> child it reads the symbols and shows an accurate stack trace, but when
> I set a breakpoint and try to continue I get the following:
> 
> (gdb) c
> Continuing.
> lin-lwp.c:1003: gdb-internal-error: lin_lwp_wait: Assertion `WIFSTOPPED (status) && WSTOPSIG (status) == SIGSTOP' failed.
> An internal GDB error was detected.  This may make further
> debugging unreliable.  Continue this debugging session? (y or n) n
> 
> Create a core file containing the current state of GDB? (y or n) n
> 
> Inferior GDB exited abnormally with code 1
> 
> 
> I answered yes to the above also, but it did not improve the situation.  Has
> anybody seen this behvior before.  I am using gcc-2.95.3 for compilation.

(not sure if someone has responded to this)

The first thing to do is get a more recent GDB from:

	http://sources.redhat.com/gdb/current/

many problems have been fixed and if this problem still occures things 
have been narrowed down a bit.

Andrew