From 06ce1c722580bfa96730167022927c39ebc24528 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Petr=20Mr=C3=A1zek?= <peterix@gmail.com>
Date: Tue, 27 Apr 2010 00:17:53 +0200
Subject: [PATCH] Fix local feature read for arena mode (no read if base == 0)

---
 dfhack/modules/Maps.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/dfhack/modules/Maps.cpp b/dfhack/modules/Maps.cpp
index 4a7d704c5..aa7f630bc 100644
--- a/dfhack/modules/Maps.cpp
+++ b/dfhack/modules/Maps.cpp
@@ -702,6 +702,8 @@ bool Maps::ReadLocalFeatures( std::map <planecoord, std::vector<t_feature *> > &
     memory_info * mem = p->getDescriptor();
     // deref pointer to the humongo-structure
     uint32_t base = p->readDWord(mem->getAddress("local_feature_start_ptr"));
+    if(!base)
+        return false;
     uint32_t sizeof_vec = mem->getHexValue("sizeof_vector");
     const uint32_t sizeof_elem = 16;
     const uint32_t offset_elem = 4;