1 files changed, 15 insertions, 0 deletions

diff --git a/src/fstring.h b/src/fstring.h
index 5c70919..e1660f9 100644
--- a/src/fstring.h
+++ b/src/fstring.h
@@ -928,26 +928,41 @@ namespace Bu
 
                 iterator begin()
                 {
+                        if( nLength == 0 )
+                                return NULL;
                         flatten();
                         return pFirst->pData;
                 }
 
                 const_iterator begin() const
                 {
+                        if( nLength == 0 )
+                                return NULL;
                         flatten();
                         return pFirst->pData;
                 }
 
                 iterator end()
                 {
+                        if( nLength == 0 )
+                                return NULL;
                         return pFirst->pData+pFirst->nLength;
                 }
 
                 const_iterator end() const
                 {
+                        if( nLength == 0 )
+                                return NULL;
                         return pFirst->pData+pFirst->nLength;
                 }
 
+                bool isEmpty() const
+                {
+                        if( nLength == 0 )
+                                return true;
+                        return false;
+                }
+
         private:
                 void flatten() const
                 {