fulltext.test, fulltext.result:

  Test case for bug#8522, to test for out of bounds memory access in ft_nlq_find_relevance().

mysql-test/r/fulltext.result

@@ -315,3 +315,9 @@ select count(*) from t1;
 count(*)
 1
 drop table t1;
+CREATE TABLE t1 ( a TEXT, FULLTEXT (a) );
+INSERT INTO t1 VALUES ('testing ft_nlq_find_relevance');
+SELECT MATCH(a) AGAINST ('nosuchword') FROM t1;
+MATCH(a) AGAINST ('nosuchword')
+0
+DROP TABLE t1;

mysql-test/t/fulltext.test

@@ -252,3 +252,11 @@ REPAIR TABLE t1;
 select count(*) from t1;
 drop table t1;
 
+#
+# testing out of bounds memory access in ft_nlq_find_relevance()
+# (bug#8522); visible in valgrind.
+#
+CREATE TABLE t1 ( a TEXT, FULLTEXT (a) );
+INSERT INTO t1 VALUES ('testing ft_nlq_find_relevance');
+SELECT MATCH(a) AGAINST ('nosuchword') FROM t1;
+DROP TABLE t1;