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Fix gcc-12 -O2 -Warray-bounds

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This commit is contained in:
Marko Mäkelä
2022-03-17 10:20:07 +02:00
parent 75e39f3cba
commit 118826d173
3 changed files with 25 additions and 26 deletions
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43
sql/sql_table.cc
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@ -9191,22 +9191,24 @@ bool mysql_alter_table(THD *thd,char *new_db, char *new_name,
create_info->used_fields |= HA_CREATE_USED_ROW_FORMAT;
}
handlerton * const old_db_type= table->s->db_type();
handlerton *new_db_type= create_info->db_type;
DBUG_PRINT("info", ("old type: %s new type: %s",
ha_resolve_storage_engine_name(table->s->db_type()),
ha_resolve_storage_engine_name(create_info->db_type)));
if (ha_check_storage_engine_flag(table->s->db_type(), HTON_ALTER_NOT_SUPPORTED))
ha_resolve_storage_engine_name(old_db_type),
ha_resolve_storage_engine_name(new_db_type)));
if (ha_check_storage_engine_flag(old_db_type, HTON_ALTER_NOT_SUPPORTED))
{
DBUG_PRINT("info", ("doesn't support alter"));
my_error(ER_ILLEGAL_HA, MYF(0), hton_name(table->s->db_type())->str,
my_error(ER_ILLEGAL_HA, MYF(0), hton_name(old_db_type)->str,
alter_ctx.db, alter_ctx.table_name);
DBUG_RETURN(true);
}
if (ha_check_storage_engine_flag(create_info->db_type,
HTON_ALTER_NOT_SUPPORTED))
if (ha_check_storage_engine_flag(new_db_type, HTON_ALTER_NOT_SUPPORTED))
{
DBUG_PRINT("info", ("doesn't support alter"));
my_error(ER_ILLEGAL_HA, MYF(0), hton_name(create_info->db_type)->str,
my_error(ER_ILLEGAL_HA, MYF(0), hton_name(new_db_type)->str,
alter_ctx.new_db, alter_ctx.new_name);
DBUG_RETURN(true);
}
@ -9349,6 +9351,17 @@ do_continue:;
DBUG_RETURN(true);
}
}
/*
If the old table had partitions and we are doing ALTER TABLE ...
engine= <new_engine>, the new table must preserve the original
partitioning. This means that the new engine is still the
partitioning engine, not the engine specified in the parser.
This is discovered in prep_alter_part_table, which in such case
updates create_info->db_type.
It's therefore important that the assignment below is done
after prep_alter_part_table.
*/
new_db_type= create_info->db_type;
#endif
if (mysql_prepare_alter_table(thd, table, create_info, alter_info,
@ -9424,7 +9437,7 @@ do_continue:;
Alter_info::ALTER_TABLE_ALGORITHM_INPLACE)
|| is_inplace_alter_impossible(table, create_info, alter_info)
|| IF_PARTITIONING((partition_changed &&
!(table->s->db_type()->partition_flags() & HA_USE_AUTO_PARTITION)), 0))
!(old_db_type->partition_flags() & HA_USE_AUTO_PARTITION)), 0))
{
if (alter_info->requested_algorithm ==
Alter_info::ALTER_TABLE_ALGORITHM_INPLACE)
@ -9441,22 +9454,10 @@ do_continue:;
request table rebuild. Set ALTER_RECREATE flag to force table
rebuild.
*/
if (create_info->db_type == table->s->db_type() &&
if (new_db_type == old_db_type &&
create_info->used_fields & HA_CREATE_USED_ENGINE)
alter_info->flags|= Alter_info::ALTER_RECREATE;
/*
If the old table had partitions and we are doing ALTER TABLE ...
engine= <new_engine>, the new table must preserve the original
partitioning. This means that the new engine is still the
partitioning engine, not the engine specified in the parser.
This is discovered in prep_alter_part_table, which in such case
updates create_info->db_type.
It's therefore important that the assignment below is done
after prep_alter_part_table.
*/
handlerton *new_db_type= create_info->db_type;
handlerton *old_db_type= table->s->db_type();
TABLE *new_table= NULL;
ha_rows copied=0,deleted=0;