From 92a2ab70b61f978e96c8a6eaae0cce1c7422a59f Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Tue, 12 Mar 2013 17:13:42 -0400
Subject: [PATCH] Avoid crash when checking property link dependencies without
 link info

Teach the isLinkDependentProperty helper added by commit e9879910 (Make
INTERFACE determined properties readable in generator expressions,
2013-01-19) to return early if no link information is available.
---
 Source/cmTarget.cxx | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Source/cmTarget.cxx b/Source/cmTarget.cxx
index 003f3d830..c8f532e57 100644
--- a/Source/cmTarget.cxx
+++ b/Source/cmTarget.cxx
@@ -4839,6 +4839,10 @@ bool isLinkDependentProperty(cmTarget *tgt, const std::string &p,
                              const char *config)
 {
   cmComputeLinkInformation *info = tgt->GetLinkInformation(config);
+  if(!info)
+    {
+    return false;
+    }
 
   const cmComputeLinkInformation::ItemVector &deps = info->GetItems();