create table bug46000(`id` int,key `GEN_CLUST_INDEX`(`id`))engine=innodb;
ERROR 42000: Incorrect index name 'GEN_CLUST_INDEX'
create table bug46000(`id` int, key `GEN_clust_INDEX`(`id`))engine=innodb;
ERROR 42000: Incorrect index name 'GEN_CLUST_INDEX'
show warnings;
Level	Code	Message
Warning	1280	Cannot Create Index with name 'GEN_CLUST_INDEX'. The name is reserved for the system default primary index.
Error	1280	Incorrect index name 'GEN_CLUST_INDEX'
Warning	1030	Got error -1 "Internal error < 0 (Not system error)" from storage engine InnoDB
create table bug46000(id int) engine=innodb;
create index GEN_CLUST_INDEX on bug46000(id);
ERROR 42000: Incorrect index name 'GEN_CLUST_INDEX'
show warnings;
Level	Code	Message
Warning	1280	Cannot Create Index with name 'GEN_CLUST_INDEX'. The name is reserved for the system default primary index.
Error	1280	Incorrect index name 'GEN_CLUST_INDEX'
create index idx on bug46000(id);
drop table bug46000;