Hello,

I have a case where gdb can not find solib break function (in our case 
_dl_debug_state) in cases where dynamic linker library is stripped.

This patch adds new fallback method of determining solib_break address 
by using _r_debug symbol and r_brk field from it.

Test suite did not show regressions.


Thank you,

Aleksandar



ChangeLog:

<date>  Aleksandar Ristovski  <aristovski@qnx.com>

     * solib-svr4.c (svr4_fetch_solib_break_from_r_debug): New.
     (enable_break): Use new function.