Merge polly.local:/tmp/maint/bug24261/my50-bug24261

into  polly.local:/tmp/maint/bug24261/my51-bug24261

mysql-test/r/func_in.result

@@ -342,6 +342,10 @@ select some_id from t1 where some_id not in(-4,-1,3423534,2342342);
 some_id
 1
 2
+select some_id from t1 where some_id not in('-1', '0');
+some_id
+1
+2
 drop table t1;
 create table t1(f1 char(1));
 insert into t1 values ('a'),('b'),('1');

mysql-test/t/func_in.test

@@ -231,6 +231,13 @@ insert into t1 values (1),(2);
 select some_id from t1 where some_id not in(2,-1);
 select some_id from t1 where some_id not in(-4,-1,-4);
 select some_id from t1 where some_id not in(-4,-1,3423534,2342342);
+
+#
+# BUG#24261: crash when WHERE contains NOT IN ('<negative value>') for unsigned column type
+#
+
+select some_id from t1 where some_id not in('-1', '0');
+
 drop table t1;
 
 #

sql/opt_range.cc

@@ -5013,6 +5013,7 @@ static SEL_TREE *get_func_mm_tree(RANGE_OPT_PARAM *param, Item_func *cond_func,
             {
               SEL_ARG *new_interval, *last_val;
               if (((new_interval= tree2->keys[idx])) &&
+                  (tree->keys[idx]) &&
                   ((last_val= tree->keys[idx]->last())))
               {
                 new_interval->min_value= last_val->max_value;