MDEV-11518 Assertion `!table || (!table->read_set || bitmap_is_set(table->read_set, field_index))' failed in Field_long::val_int()

QUICK_RANGE_SELECT::init_ror_merged_scan() should
also set and restore TABLE::vcol_set

Author: vuvova

mysql-test/suite/vcol/r/range.result

@@ -0,0 +1,9 @@
+create table t1 (pk int, i int, v int as (i*2) virtual, primary key (pk), key (v)) engine=myisam;
+insert into t1 (pk,i) values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8);
+create table t2 (a int, b int) engine=myisam;
+insert into t2 values (1,2),(2,4);
+select * from t1 inner join t2 on ( t2.b = t1.v or t2.a = t1.pk );
+pk	i	v	a	b
+1	1	0	1	2
+2	2	0	2	4
+drop table t1, t2;

mysql-test/suite/vcol/t/range.test

@@ -0,0 +1,10 @@
+#
+# MDEV-11518 Assertion `!table || (!table->read_set || bitmap_is_set(table->read_set, field_index))' failed in Field_long::val_int()
+#
+create table t1 (pk int, i int, v int as (i*2) virtual, primary key (pk), key (v)) engine=myisam;
+insert into t1 (pk,i) values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8);
+create table t2 (a int, b int) engine=myisam;
+insert into t2 values (1,2),(2,4);
+select * from t1 inner join t2 on ( t2.b = t1.v or t2.a = t1.pk );
+drop table t1, t2;
+

sql/opt_range.cc

@@ -1477,6 +1477,7 @@ int QUICK_RANGE_SELECT::init_ror_merged_scan(bool reuse_handler,
   handler *save_file= file, *org_file;
   my_bool org_key_read;
   THD *thd= head->in_use;
+  MY_BITMAP * const save_vcol_set= head->vcol_set;
   MY_BITMAP * const save_read_set= head->read_set;
   MY_BITMAP * const save_write_set= head->write_set;
   DBUG_ENTER("QUICK_RANGE_SELECT::init_ror_merged_scan");
@@ -1489,7 +1490,7 @@ int QUICK_RANGE_SELECT::init_ror_merged_scan(bool reuse_handler,
     {
       DBUG_RETURN(1);
     }
-    head->column_bitmaps_set(&column_bitmap, &column_bitmap);
+    head->column_bitmaps_set(&column_bitmap, &column_bitmap, &column_bitmap);
     goto end;
   }
 
@@ -1514,7 +1515,7 @@ int QUICK_RANGE_SELECT::init_ror_merged_scan(bool reuse_handler,
     goto failure;  /* purecov: inspected */
   }
 
-  head->column_bitmaps_set(&column_bitmap, &column_bitmap);
+  head->column_bitmaps_set(&column_bitmap, &column_bitmap, &column_bitmap);
 
   if (file->ha_external_lock(thd, F_RDLCK))
     goto failure;
@@ -1568,7 +1569,7 @@ int QUICK_RANGE_SELECT::init_ror_merged_scan(bool reuse_handler,
   DBUG_RETURN(0);
 
 failure:
-  head->column_bitmaps_set(save_read_set, save_write_set);
+  head->column_bitmaps_set(save_read_set, save_write_set, save_vcol_set);
   delete file;
   file= save_file;
   DBUG_RETURN(1);