On Sun, Aug 1, 2010 at 11:53 PM, patrick keshishian <pkeshish@gmail.com>
wrote:
quoted text
> On Sun, Aug 1, 2010 at 11:12 PM, Matthieu Herrb <mherrb@gmail.com> wrote:
>> On Mon, Aug 2, 2010 at 7:24 AM, patrick keshishian <pkeshish@gmail.com>
wrote:
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>>> Hi,
>>>
>>> On Fri, Jul 30, 2010 at 5:49 AM, David Coppa <dcoppa@gmail.com> wrote:
>>
>>> Reading symbols from /usr/libexec/ld.so...done.
>>> Loaded symbols for /usr/libexec/ld.so
>>> #0  0x221152f8 in dlsym () from /usr/libexec/ld.so
>>> (gdb) bt full
>>> #0  0x221152f8 in dlsym () from /usr/libexec/ld.so
>>> No symbol table info available.
>>> #1  0x2214af94 in ?? () from /usr/libexec/ld.so
>>> No symbol table info available.
>>> #2  0x2214af94 in ?? () from /usr/libexec/ld.so
>>> No symbol table info available.
>>> Previous frame identical to this frame (corrupt stack?)
>>>
>>>
>>>
>>> [2] Very simple program that calls dlopen()
>>> $ ./so_loader
>>> $ echo $?
>>> 20
>>> $ gdb so_loader
>>> GNU gdb 6.3
>>> Copyright 2004 Free Software Foundation, Inc.
>>> GDB is free software, covered by the GNU General Public License, and you
are
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>>> welcome to change it and/or distribute copies of it under certain
conditions.
quoted text
>>> Type "show copying" to see the conditions.
>>> There is absolutely no warranty for GDB.  Type "show warranty" for
details.
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>>> This GDB was configured as "powerpc-unknown-openbsd4.7"...
>>> (gdb) break main
>>> Breakpoint 1 at 0x1800a64: file so_loader.c, line 35.
>>> (gdb) r
>>> Starting program: /home/sidster/src/so_loader
>>>
>>> Breakpoint 1, main (argc=1, argv=0xfffdd2c4) at so_loader.c:35
>>> 35              dh = dlopen(SOFILE, RTLD_NOW);
>>> (gdb) n
>>>
>>> Program exited with code 024.
>>>
>>>
>>
>>
>> This problem was identified as a gcc4 problem, mis-compiling ld.so.
>> The following commit fixes it.

umm.. the problem remains. unless i misunderstood what was fixed.
ff3.6.8 crashes as before and my test program still exits abnormally.

--patrick



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>
> Excellent news! I'll wait for my mirror of choice to pick up this change.
>
> Thanks for the update,
> --patrick
>
>
>>> Date: Sun, 1 Aug 2010 11:55:28 -0600 (MDT)
>>> From: Mark Kettenis <kettenis@cvs.openbsd.org>
>>> To: source-changes@cvs.openbsd.org
>>> Subject: CVS: cvs.openbsd.org: src
>>>
>>> CVSROOT:        /cvs
>>> Module name:    src
>>> Changes by:     kettenis@cvs.openbsd.org        2010/08/01 11:55:28
>>>
>>> Modified files:
>>>        gnu/gcc/gcc/config/rs6000: rs6000.c
>>>
>>> Log message:
>>> Make __builtin_return_address(0) work with -fstack-protector.  Old diff
>>> from Jakub Jelinek that never made it into upstream GCC.  Fixes ld.so.
>>> Found by drahn@ and me; ok miod@
>>
>> --
>> Matthieu Herrb