Re: Break at address on darwin

[Tristan Gingold <gingold@adacore.com>]

On Aug 3, 2011, at 11:00 PM, Ben L. Titzer wrote:

> On Wed, Aug 3, 2011 at 7:05 AM, Pedro Alves <pedro@codesourcery.com> wrote:
>> On Wednesday 03 August 2011 14:45:11, Ben L. Titzer wrote:
>> 
>>> Yes, 0x1000 is where the program loads its first text page, which is
>>> mapped to file offset 0. 0x01114 happens to be the entrypoint
>>> instruction. 0x01148 is the address of the first function it calls,
>>> which you can see from the assembly listing.
>> 
>> Okay.  I know close to nothing about Darwin.  Apple
>> have their own heavilly modified version of gdb, forked from
>> the FSF tree eons ago, so as Tristan said, you need to contact
>> them.  Or try current FSF gdb.
>> 
> 
> Fair enough. I downloaded and built gdb 7.3 for darwin. It segfaults
> trying to load symbols from this binary (there are none).
> 
> % gdb /tmp/add01
> GNU gdb (GDB) 7.3
> Copyright (C) 2011 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
> and "show warranty" for details.
> This GDB was configured as "x86_64-apple-darwin10.8.0".
> For bug reporting instructions, please see:
> <http://www.gnu.org/software/gdb/bugs/>...
> Reading symbols from /private/tmp/add01...Segmentation fault

Try the development version (from cvs).  I think it works.

Tristan.