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Date: Thu, 03 Jul 2003 09:05:00 -0000
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From: "Paul N. Hilfinger" <hilfingr@otisco.mckusick.com>
To: ac131313@redhat.com
CC: gdb@sources.redhat.com
Subject: Re: Frame handling
Reply-to: Hilfinger@otisco.mckusick.com
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[Apologies if I've missed a message on this].
Something (recent frame stuff?) seems to have broken backtraces on 
Sparc Solaris 5.8.  Use the head version of GDB (although the GDB6 branch 
shows it also) on the attached silly program (I compiled 
with -g and gcc 3.0.3).   If you stop in, say, inside the first recursive
invocation of g, you will find that 'where' only prints three frames, 
getting the frame pointer screwed up in the last one, as far as I can tell.

Paul Hilfinger

------------------------------------------------------------
#include <stdio.h>

extern int g (int);

int h (int r)
{
  int i;
  int s;

  for (i = r-1, s = 0; i >= 0; i -= 1)
    s += g (i);
  return s;
}

int g (int q)
{
  return h (q);
}

int f (int x, int y)
{
  int z, s;
  for (z = x, s = 0; z < y; z += 1)
    s += z * g(x);
  return s;
}


main ()
{
  printf ("%d\n", f (3, 7));
}