Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!samsung!munnari.oz.au!frankland-river!pem
From: pem@frankland-river.aaii.oz.au (Paul E. Maisano)
Newsgroups: comp.lang.perl
Subject: Patched perl misbehaves under the debugger
Message-ID: <1210@frankland-river.aaii.oz.au>
Date: 4 Mar 90 05:35:34 GMT
Organization: Australian AI Institute
Lines: 28

After bringing my version of perl up to patch level 12 on a sparcstation1
and a SUN 3/60, I noticed that "perl -d prog" dumped core occasionally.
I narrowed it down to explicit returns inside a subroutine.
This happens on both the sparcstation and the sun3. The scripts work fine
when run normally. So the work around is obvious: write your programs
in such a way that you either don't use explicit returns or so they work
first time and need no debugging :-)

Seriously, I have just been using perl.old for debugging purposes.

This program dumps core when run under the debugger:

---------------
#!/usr/bin/perl

sub bug {
    return 1;
}

&bug;
---------------

------------------
Paul E. Maisano
Australian Artificial Intelligence Institute
1 Grattan St. Carlton, Vic. 3053, Australia
Ph: +613 663-7922  Fax: +613 663-7937
Email: pem@aaii.oz.au   UUCP: {uunet,mcsun,ukc,nttlab}!munnari!aaii.oz.au!pem