Bug#10932 - Building server with key limit of 128, makes test cases fail

This patch allows to configure MyISAM for 128 indexes per table.
The main problem is the key_map, wich is implemented as an ulonglong.
To get rid of the limit and keep the efficient and flexible
implementation, the highest bit is now used for all upper keys.
This means that the lower keys can be disabled and enabled 
individually as usual and the high keys can only be disabled and
enabled as a block. That way the existing test suite is still
applicable, while more keys work, though slightly less efficient.
To really get more than 64 keys, some defines need to be changed.
Another patch will address this.

1 files changed, 6 insertions, 6 deletions

diff --git a/myisam/myisampack.c b/myisam/myisampack.c
index daf2bbdf85c..ba48cbf1b62 100644
--- a/myisam/myisampack.c
+++ b/myisam/myisampack.c
@@ -441,9 +441,9 @@ static bool open_isam_files(PACK_MRG_INFO *mrg,char **names,uint count)
     if (!(mrg->file[i]=open_isam_file(names[i],O_RDONLY)))
       goto error;
 
-    mrg->src_file_has_indexes_disabled|= ((mrg->file[i]->s->state.key_map != 
-                                           (((ulonglong) 1) <<
-                                            mrg->file[i]->s->base. keys) - 1));
+    mrg->src_file_has_indexes_disabled|=
+      ! mi_is_all_keys_active(mrg->file[i]->s->state.key_map,
+                              mrg->file[i]->s->base.keys);
   }
   /* Check that files are identical */
   for (j=0 ; j < count-1 ; j++)
@@ -2941,7 +2941,7 @@ static int save_state(MI_INFO *isam_file,PACK_MRG_INFO *mrg,my_off_t new_length,
   share->state.dellink= HA_OFFSET_ERROR;
   share->state.split=(ha_rows) mrg->records;
   share->state.version=(ulong) time((time_t*) 0);
-  if (share->state.key_map != (ULL(1) << share->base.keys) - 1)
+  if (! mi_is_all_keys_active(share->state.key_map, share->base.keys))
   {
     /*
       Some indexes are disabled, cannot use current key_file_length value
@@ -2955,7 +2955,7 @@ static int save_state(MI_INFO *isam_file,PACK_MRG_INFO *mrg,my_off_t new_length,
     original file so "myisamchk -rq" can use this value (this is necessary 
     because index size cannot be easily calculated for fulltext keys)
   */
-  share->state.key_map=0;
+  mi_clear_all_keys_active(share->state.key_map);
   for (key=0 ; key < share->base.keys ; key++)
     share->state.key_root[key]= HA_OFFSET_ERROR;
   for (key=0 ; key < share->state.header.max_block_size ; key++)
@@ -2995,7 +2995,7 @@ static int save_state_mrg(File file,PACK_MRG_INFO *mrg,my_off_t new_length,
   }
   state.dellink= HA_OFFSET_ERROR;
   state.version=(ulong) time((time_t*) 0);
-  state.key_map=0;
+  mi_clear_all_keys_active(state.key_map);
   state.checksum=crc;
   if (isam_file->s->base.keys)
     isamchk_neaded=1;