From: Jarkko Hietaniemi <jhi@iki.fi>
Date: Wed, 15 May 2002 00:24:28 +0000 (+0000)
Subject: Read of uninitialized heap found by Third Degree
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=dc5990859d9ad86b15371dbc1a77b5f95369a3f2;p=p5sagit%2Fp5-mst-13.2.git

Read of uninitialized heap found by Third Degree
(e.g. in t/op/subst.t)

p4raw-id: //depot/perl@16601
---

diff --git a/scope.c b/scope.c
index a1fdfd1..4ff903f 100644
--- a/scope.c
+++ b/scope.c
@@ -80,7 +80,9 @@ Perl_new_stackinfo(pTHX_ I32 stitems, I32 cxitems)
     si->si_cxmax = cxitems - 1;
     si->si_cxix = -1;
     si->si_type = PERLSI_UNDEF;
-    New(56, si->si_cxstack, cxitems, PERL_CONTEXT);
+    /* Needs to be Newz() because PUSHSUBST() in pp_subst()
+     * might otherwise read uninitialized heap. */
+    Newz(56, si->si_cxstack, cxitems, PERL_CONTEXT);
     return si;
 }