diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 0bf6ebd74af..e0c72edb875 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2015-12-10  Martin Liska  <mliska@suse.cz>
+
+	* tree-vect-data-refs.c: Free an overwritten dataref.
+
 2015-12-09  John David Anglin  <danglin@gcc.gnu.org>
 
 	PR target/68729
diff --git a/gcc/tree-vect-data-refs.c b/gcc/tree-vect-data-refs.c
index 8810af1bfcd..4c566c84766 100644
--- a/gcc/tree-vect-data-refs.c
+++ b/gcc/tree-vect-data-refs.c
@@ -3847,6 +3847,7 @@ again:
 	      return false;
 	    }
 
+	  free_data_ref (datarefs[i]);
 	  datarefs[i] = dr;
 	  STMT_VINFO_GATHER_SCATTER_P (stmt_info) = gatherscatter;
 	}