A nasty fix when all rows are deleted with a write lock

myisam/mi_delete_all.c

@@ -35,11 +35,11 @@ int mi_delete_all_rows(MI_INFO *info)
   if (_mi_mark_file_changed(info))
     goto err;
 
-  info->state->records=info->state->del=state->split=0;
+  state->state.records=info->state->records=info->state->del=state->split=0;
   state->dellink = HA_OFFSET_ERROR;
   state->sortkey=  (ushort) ~0;
   info->state->key_file_length=share->base.keystart;
-  info->state->data_file_length=0;
+  state->state.data_file_length=info->state->data_file_length=0;
   info->state->empty=info->state->key_empty=0;
   state->checksum=0;
 

mysql-test/r/delete.result

@@ -24,3 +24,16 @@ create table t1 (a bigint not null, primary key (a,a,a,a,a,a,a,a,a,a));
 insert into t1 values (2),(4),(6),(8),(10),(12),(14),(16),(18),(20),(22),(24),(26),(23),(27);
 delete from t1 where a=27;
 drop table t1;
+CREATE TABLE t1 (a INT);
+INSERT INTO  t1 VALUES (1), (2), (3);
+LOCK TABLES t1 WRITE;
+DELETE FROM t1;
+OPTIMIZE TABLE t1;
+Table	Op	Msg_type	Msg_text
+test.t1	optimize	status	OK
+SELECT * FROM t1;
+a
+CHECK TABLE t1;
+Table	Op	Msg_type	Msg_text
+test.t1	check	status	OK
+drop table if exists t1;

mysql-test/t/delete.test

@@ -35,3 +35,11 @@ create table t1 (a bigint not null, primary key (a,a,a,a,a,a,a,a,a,a));
 insert into t1 values (2),(4),(6),(8),(10),(12),(14),(16),(18),(20),(22),(24),(26),(23),(27);
 delete from t1 where a=27;
 drop table t1;
+CREATE TABLE t1 (a INT);
+INSERT INTO  t1 VALUES (1), (2), (3);
+LOCK TABLES t1 WRITE;
+DELETE FROM t1;
+OPTIMIZE TABLE t1;
+SELECT * FROM t1;
+CHECK TABLE t1;
+drop table if exists t1;

sql/mysqld.cc

@@ -3004,10 +3004,10 @@ struct my_option my_long_options[] =
   {"delay-key-write", OPT_DELAY_KEY_WRITE, "Type of DELAY_KEY_WRITE",
    0,0,0, GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0},
   {"delay-key-write-for-all-tables", OPT_DELAY_KEY_WRITE_ALL,
-   "Don't flush key buffers between writes for any MyISAM table (Depricated option, use --delay-key-write=all instead)",
+   "Don't flush key buffers between writes for any MyISAM table (Deprecated option, use --delay-key-write=all instead)",
    0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
   {"enable-locking", OPT_ENABLE_LOCK,
-   "Depricated option, use --external-locking instead",
+   "Deprecated option, use --external-locking instead",
    (gptr*) &opt_external_locking, (gptr*) &opt_external_locking,
    0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
 #ifdef __NT__
@@ -3244,7 +3244,7 @@ struct my_option my_long_options[] =
    0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
 #ifndef TO_BE_DELETED
   {"safe-show-database", OPT_SAFE_SHOW_DB,
-   "Depricated option; One should use GRANT SHOW DATABASES instead...",
+   "Deprecated option; One should use GRANT SHOW DATABASES instead...",
    (gptr*) &opt_safe_show_db, (gptr*) &opt_safe_show_db, 0, GET_BOOL, NO_ARG,
    0, 0, 0, 0, 0, 0},
 #endif
@@ -3274,7 +3274,7 @@ struct my_option my_long_options[] =
   {"skip-innodb", OPT_INNODB_SKIP, "Don't use Innodb (will save memory)",
    0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
   {"skip-locking", OPT_SKIP_LOCK,
-   "Depricated option, use --skip-external-locking instead",
+   "Deprecated option, use --skip-external-locking instead",
    0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
   {"skip-external-locking", OPT_SKIP_LOCK, "Do not use system (external) locking",
    (gptr*) &opt_external_locking, (gptr*) &opt_external_locking,