1 files changed, 2 insertions, 0 deletions

diff --git a/src/fbasicstring.h b/src/fbasicstring.h
index e965de8..73951a6 100644
--- a/src/fbasicstring.h
+++ b/src/fbasicstring.h
@@ -1497,6 +1497,8 @@ namespace Bu
                                 return true;
                         if( core->nLength != pData.core->nLength )
                                 return false;
+                        if( pData.core->pFirst == NULL || core->pFirst == NULL )
+                                return false;
 
                         flatten();
                         pData.flatten();