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Mail Archives: cygwin/1999/02/21/12:56:04

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To: Christopher Faylor <cgf AT cygnus DOT com>
cc: cygwin AT sourceware DOT cygnus DOT com
Subject: Re: gdb failure
In-reply-to: Your message of "Sun, 21 Feb 1999 12:20:01 EST."
<19990221122001 DOT A7097 AT cygnus DOT com>
Date: Sun, 21 Feb 1999 11:55:05 -0600
From: Mumit Khan <khan AT xraylith DOT wisc DOT EDU>

Christopher Faylor <cgf AT cygnus DOT com> writes:
> On Sun, Feb 21, 1999 at 12:42:45AM -0600, Mumit Khan wrote:
> >Let me apologize on behalf of all who support win32 for the lack of
> >support in gdb for debugging template instantiations. We need to get
> >this fixed, but nobody has volunteered yet.
> 
> Is this a win32 bug or just a generic gdb problem?  This is the first
> that I can recall hearing about this problem.

Actually, there've been a noises about this, but not that much. It was
a combination bug, in egcs debugging output (almost fixed) and something 
in gdb (don't have a clue, and it may very well be another egcs stabs bug).

Here's a reference bug report from Xiaomao Xiao <xiao AT cmold DOT com>:
  http://www.cygnus.com/ml/gnu-win32/1998-Oct/0232.html

Good news is that major problem has been fixed in egcs-1.1.2, but there's
still a few nits I just can't seem to track down. With egcs-1.1.2, you
can step into template instances just fine, but just don't try to step
into a template instance in a library stripped of debugging info. 
Normally, gdb is smart enough to just step "over" these, but the cygwin 
version tends to say something like "Cannot access memory at address 
0x2000000". I believe egcs-1.1.2 solution will be sufficient for 90%
of the time.

Regards,
Mumit


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