correct off-by-one error in CONCAT

CONCAT_WS didn't have it
6 years ago · 69bd73173d
1 changed files with 1 additions and 1 deletions
--- a/sql/item_strfunc.cc
+++ b/sql/item_strfunc.cc
@ -539,7 +539,7 @@ String *Item_func_concat::val_str(String *str)
 	use_as_buff=str;			// Put next arg here
      }
      else if (tmp_value.is_alloced() && res2->ptr() >= tmp_value.ptr() &&
-	       res2->ptr() <= tmp_value.ptr() + tmp_value.alloced_length())
+	       res2->ptr() < tmp_value.ptr() + tmp_value.alloced_length())
      {
 	/*
 	  This happens really seldom: