Greetings,

This patch:
  http://sourceware.org/ml/gdb-patches/2009-07/msg00417.html
caused Darwin/MacOSX to stop working with assertion:
  objfiles.c:793: internal-error: qsort_cmp: Assertion
`obj_section_endaddr (sect1) <= sect2_addr' failed.

Turns out this worked only "by accident" before.

Here is a proposed fix. Tested by running "./gdb ./gdb", setting
breakpoints, etc.
(I don't have dejagnu setup on MacOS yet).

Thanks,
-- 
Paul Pluzhnikov

2009-08-14  Paul Pluzhnikov  <ppluzhnikov@google.com>

        * objfiles.h (OBJF_NOT_MAPPED): New macro.
        * objfiles.c (update_section_map): Ignore unmapped objfiles.
        * machoread.c (macho_oso_symfile): Set OBJF_NOT_MAPPED for oso files.