diff --git a/library/include/BitArray.h b/library/include/BitArray.h
index 5aa46baa9..0389df796 100644
--- a/library/include/BitArray.h
+++ b/library/include/BitArray.h
@@ -27,6 +27,7 @@ distribution.
 #include "Export.h"
 #include <stdint.h>
 #include <string.h>
+#include <stdlib.h>
 #include <sstream>
 //#include <ostream>
 namespace DFHack
@@ -35,33 +36,42 @@ namespace DFHack
     class BitArray
     {
     public:
-        BitArray()
+        BitArray() : bits(NULL), size(0) {}
+        BitArray(const BitArray<T> &other) : bits(NULL), size(0)
         {
-            bits = NULL;
-            size = 0;
+            *this = other;
         }
         ~BitArray()
         {
-            if(bits)
-                delete [] bits;
+            free(bits);
         }
+
         void clear_all ( void )
         {
             if(bits)
                 memset(bits, 0, size);
         }
-        void extend (T index)
+        void resize (unsigned newsize)
         {
-            uint32_t newsize = (index / 8) + 1;
-            if (newsize <= size)
+            if (newsize == size)
                 return;
-            uint8_t *newbits = new uint8_t[newsize];
-            memset(newbits, 0, newsize);
-            memcpy(newbits, bits, size);
-            delete[] bits;
-            bits = newbits;
+            bits = (uint8_t*)realloc(bits, newsize);
+            if (newsize > size)
+                memset(bits+size, 0, newsize-size);
             size = newsize;
         }
+        BitArray<T> &operator= (const BitArray<T> &other)
+        {
+            resize(other.size);
+            memcpy(bits, other.bits, size);
+            return *this;
+        }
+        void extend (T index)
+        {
+            unsigned newsize = (index / 8) + 1;
+            if (newsize > size)
+                resize(newsize);
+        }
         void set (T index, bool value = true)
         {
             if(!value)
@@ -107,7 +117,7 @@ namespace DFHack
             else return false;
         }
         /// WARNING: this can truncate long bit arrays
-        operator uint32_t ()
+        uint32_t as_int ()
         {
             if(!bits)
                 return 0;
@@ -147,4 +157,42 @@ namespace DFHack
         uint8_t * bits;
         uint32_t size;
     };
+
+    template <typename T = int>
+    class DfArray
+    {
+        T *m_data;
+        unsigned short m_size;
+    public:
+        DfArray() : m_data(NULL), m_size(0) {}
+        ~DfArray() { free(m_data); }
+
+        DfArray(const DfArray<T> &other) : m_data(NULL), m_size(0) {
+            *this = other;
+        }
+
+        T *data() { return m_data; }
+        const T *data() const { return m_data; }
+        unsigned size() const { return m_size; }
+
+        T& operator[] (unsigned i) { return m_data[i]; }
+        const T& operator[] (unsigned i) const { return m_data[i]; }
+
+        void resize(unsigned new_size)
+        {
+            if (new_size == m_size)
+                return;
+            m_data = (T*)realloc(m_data, sizeof(T)*new_size);
+            if (new_size > m_size)
+                memset(m_data+sizeof(T)*m_size, 0, sizeof(T)*(new_size - m_size));
+            m_size = new_size;
+        }
+
+        DfArray &operator= (const DfArray<T> &other)
+        {
+            resize(other.size());
+            memcpy(data(), other.data(), sizeof(T)*size());
+            return *this;
+        }
+    };
 }
\ No newline at end of file
diff --git a/library/include/DataDefs.h b/library/include/DataDefs.h
index 7ef64ef5e..4e18f02f2 100644
--- a/library/include/DataDefs.h
+++ b/library/include/DataDefs.h
@@ -181,6 +181,7 @@ namespace df
     using DFHack::bitfield_item_info;
     using DFHack::enum_list_attr;
     using DFHack::BitArray;
+    using DFHack::DfArray;
 
     template<class T>
     class class_virtual_identity : public virtual_identity {
diff --git a/library/modules/Maps.cpp b/library/modules/Maps.cpp
index e64b71dc3..5a1ec5bad 100644
--- a/library/modules/Maps.cpp
+++ b/library/modules/Maps.cpp
@@ -145,7 +145,7 @@ bool Maps::ReadBlock40d(uint32_t x, uint32_t y, uint32_t z, mapblock40d * buffer
         buffer->local_feature = block->local_feature;
         buffer->mystery = block->unk2;
         buffer->origin = block;
-        buffer->blockflags.whole = block->flags;
+        buffer->blockflags.whole = block->flags.as_int();
         return true;
     }
     return false;
@@ -211,7 +211,7 @@ bool Maps::ReadBlockFlags(uint32_t x, uint32_t y, uint32_t z, t_blockflags &bloc
     df::map_block *block = getBlock(x,y,z);
     if (block)
     {
-        blockflags.whole = block->flags;
+        blockflags.whole = block->flags.as_int();
         return true;
     }
     return false;
diff --git a/library/xml b/library/xml
index b3534e853..2444f376e 160000
--- a/library/xml
+++ b/library/xml
@@ -1 +1 @@
-Subproject commit b3534e853f99129b1664766f09f461d54be6cbfe
+Subproject commit 2444f376e32783c9f7a7bf103b209e256e64ed80