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Re: gdb 7.0 on darwin 10



On Oct 12, 2009, at 6:26 PM, Vincent Bénony wrote:


Hi there !

Hi,


I'm pretty impressed by the new functionalities of GDB 7.0, which works pretty well on my Linux box. But, I've some problem with the darwin version.

I currently use an iMac under darwin 10 (Snow Leopard).

First of all, it seems that the dyld struct used by gdb to catch dylib loading have changed: the version number was 1 under darwin 9, and is now 7. So, commands like "info sharedlibrary" do not work unless I change the DYLD_VERSION macro definition in gdb/solib- darwin.c file. By the way, by changing the definition on DYLD_VERSION and by testing everywhere in the code that version is less or equal to 7, I finally got gdb reading symbols of my dylib files correctly !

Thanks for the details. I will fix that.


But now, I've another problem: it seems that GDB do not handle coalesced sections, so symbols address are mostly wrong for functions defined in a header file. Did I missed something in arguments to give to configure script ?

GDB doesn't handle well coalesced sections, dead-stripped binaries or common symbols on Darwin. We are
working on that. One possible work-around is to use a dsym file (see dsymutil).


Tristan.


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