Debugging Objective C with gcc/gdb

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#421

From: Seth Tisue
Date: Tue, 26 Jul 1994 18:58

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I'm using gcc 2.5.8 and gdb 4.1.2 on a Solaris 2.3 machine.

I'd like to debug Objective C programs.  Right now I'm using a few
hacks, like this one:

  break objc_msg_lookup
  command <#>
    silent
    finish
  end

(So that when I step through my program, I don't wind up in the bowels
of libobjc.a.)

Is there a more official way of doing this?  Or does anyone have their
own hacks they'd like to share?  Also, how can I see the contents of
an instance variable of an arbitrary id?  i.e. if my code looks like:

  MyClass* myvar;

I can type "p myvar->data" and get an answer.  But if my code looks like:

  id myvar;

and I happen to know at runtime that myvar is a MyClass object, how do
I access the instance variable?
-- 
== Seth Tisue (s-tisue@anl.gov)

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From: tisu@quads.uchicago.edu (Seth Tisue)
Subject: Debugging Objective C with gcc/gdb
Message-ID: <1994Jul26.185852.14238@midway.uchicago.edu>
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Date: Tue, 26 Jul 1994 18:58:52 GMT
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