The until command is broken in the gdb that ships with redhat 7.0.  It was
working in redhat 6.2.

You are supposed to be able to give gdb the command:

until function

and have it run until it either enters the function or leaves the current
function.  For example consider the program:

----------------------------------- bug.c -------------------------------
static int x;

int fun()
{
    x = 1;
}

int main(int ac, char **av)
{
    x = 3;
    fun();
    x = 3;
    return 0;
}
-------------------------------- end of bug.c ----------------------------

and the gdb script:

--------------------------------- script ---------------------------------
shell gcc -g bug.c
file a.out
b main
r
until fun
--------------------------------- end of script --------------------------

Now if you run the command:

gdb -x script

You will get the following output:

GNU gdb 5.0
Copyright 2000 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-redhat-linux".
Breakpoint 1 at 0x80483b3: file bug.c, line 10.

Breakpoint 1, main (ac=1, av=0xbffff964) at bug.c:10
10          x = 3;
0x400329cb in __libc_start_main (main=0x80483b0 <main>, argc=1,
    argv=0xbffff964, init=0x8048274 <_init>, fini=0x804840c <_fini>,
    rtld_fini=0x4000ae60 <_dl_fini>, stack_end=0xbffff95c)
    at ../sysdeps/generic/libc-start.c:92
92      ../sysdeps/generic/libc-start.c: No such file or directory.
(gdb)

instead of the correct result, which would have been for the debugger to
stop inside the fun() function.  Again, this works with the gdb from 6.2