From c55b8a54780c4db6a5fa270ddd2d05ab837f6ffb Mon Sep 17 00:00:00 2001
From: David Kalnischkies <kalnischkies@gmail.com>
Date: Thu, 13 Jan 2011 17:16:11 +0100
Subject: * apt-pkg/cacheiterator.h:   - do not segfault if cache is not build
 (Closes: #254770)

---
 apt-pkg/policy.cc | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'apt-pkg/policy.cc')

diff --git a/apt-pkg/policy.cc b/apt-pkg/policy.cc
index f05b6ca49..5427271b6 100644
--- a/apt-pkg/policy.cc
+++ b/apt-pkg/policy.cc
@@ -45,6 +45,8 @@ using namespace std;
    file matches the V0 policy engine. */
 pkgPolicy::pkgPolicy(pkgCache *Owner) : Pins(0), PFPriority(0), Cache(Owner)
 {
+   if (Owner == 0 || &(Owner->Head()) == 0)
+      return;
    PFPriority = new signed short[Owner->Head().PackageFileCount];
    Pins = new Pin[Owner->Head().PackageCount];
 
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