From: Artur Bergman <sky@nanisky.com>
Date: Tue, 2 Oct 2001 10:40:57 +0000 (+0000)
Subject: Fixes obscure bug that manifests itself by.
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=720f287d0034492a26b7255eb708eb820f59a51d;p=p5sagit%2Fp5-mst-13.2.git

Fixes obscure bug that manifests itself by.
local $!=0;undef*STDOUT;#segfaults
Has been around for a while. Possible other magic IO vars are
possibly affected as well. Reported by Jos Boumans.

p4raw-id: //depot/perl@12303
---

diff --git a/mg.c b/mg.c
index 4fc2ffc..0fb1a86 100644
--- a/mg.c
+++ b/mg.c
@@ -1894,6 +1894,8 @@ Perl_magic_set(pTHX_ SV *sv, MAGIC *mg)
     case '|':
 	{
 	    IO *io = GvIOp(PL_defoutgv);
+	    if(!io)
+	      break;
 	    if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0)
 		IoFLAGS(io) &= ~IOf_FLUSH;
 	    else {