don't compare table names to detect temporary tables

(also fixes a bug with unaccounted table names like #sql-123,
see drop and alter_table tests)

sql/handler.cc

@@ -2265,12 +2265,6 @@ int ha_delete_table(THD *thd, handlerton *table_type, const char *path,
   }
   delete file;
 
-  if (likely(error == 0))
-  {
-    PSI_CALL_drop_table_share(is_prefix(alias, tmp_file_prefix),
-                              db, strlen(db), alias, strlen(alias));
-  }
-
   DBUG_RETURN(error);
 }
 
@@ -2353,8 +2347,7 @@ void handler::rebind_psi()
     Notify the instrumentation that this table is now owned
     by this thread.
   */
-  PSI_table_share *share_psi= ha_table_share_psi();
-  m_psi= PSI_CALL_rebind_table(share_psi, this, m_psi);
+  m_psi= PSI_CALL_rebind_table(ha_table_share_psi(), this, m_psi);
 }
 
 
@@ -4316,8 +4309,9 @@ int ha_create_table(THD *thd, const char *path,
   char name_buff[FN_REFLEN];
   const char *name;
   TABLE_SHARE share;
-  bool temp_table __attribute__((unused)) = create_info->tmp_table() ||
-                                is_prefix(table_name, tmp_file_prefix);
+  bool temp_table __attribute__((unused)) =
+    create_info->options & (HA_LEX_CREATE_TMP_TABLE | HA_CREATE_TMP_ALTER);
+                                 
   DBUG_ENTER("ha_create_table");
 
   init_tmp_table_share(thd, &share, db, 0, table_name, path);

sql/handler.h

@@ -320,6 +320,7 @@
 #define HA_LEX_CREATE_TMP_TABLE	1
 #define HA_LEX_CREATE_IF_NOT_EXISTS 2
 #define HA_LEX_CREATE_TABLE_LIKE 4
+#define HA_CREATE_TMP_ALTER	8
 #define HA_MAX_REC_LENGTH	65535
 
 /* Table caching type */
@@ -1437,7 +1438,7 @@ struct HA_CREATE_INFO
   const char *alias;
   ulonglong max_rows,min_rows;
   ulonglong auto_increment_value;
-  ulong table_options;
+  ulong table_options;                  ///< HA_OPTION_ values
   ulong avg_row_length;
   ulong used_fields;
   ulong key_block_size;

sql/sql_table.cc

@@ -2374,6 +2374,13 @@ int mysql_rm_table_no_locks(THD *thd, TABLE_LIST *tables, bool if_exists,
 	wrong_tables.append(',');
       wrong_tables.append(String(table->table_name,system_charset_info));
     }
+    else
+    {
+      PSI_CALL_drop_table_share(table->internal_tmp_table,
+                                table->db, table->db_length,
+                                table->table_name, table->table_name_length);
+    }
+
     DBUG_PRINT("table", ("table: 0x%lx  s: 0x%lx", (long) table->table,
                          table->table ? (long) table->table->s : (long) -1));
 
@@ -2510,6 +2517,11 @@ bool quick_rm_table(handlerton *base,const char *db,
   path[path_length - reg_ext_length]= '\0'; // Remove reg_ext
   if (!(flags & FRM_ONLY))
     error|= ha_delete_table(current_thd, base, path, db, table_name, 0);
+
+  if (likely(error == 0))
+    PSI_CALL_drop_table_share(flags & FN_IS_TMP, db, strlen(db),
+                              table_name, strlen(table_name));
+
   DBUG_RETURN(error);
 }
 
@@ -4674,7 +4686,7 @@ mysql_rename_table(handlerton *base, const char *old_db,
    */
   if (likely(error == 0))
   {
-    PSI_CALL_drop_table_share(is_prefix(old_name, tmp_file_prefix),
+    PSI_CALL_drop_table_share(flags & FN_FROM_IS_TMP,
                               old_db, strlen(old_db),
                               old_name, strlen(old_name));
   }
@@ -7001,6 +7013,7 @@ bool mysql_alter_table(THD *thd,char *new_db, char *new_name,
                                   HA_OPTION_PACK_RECORD));
   }
   tmp_disable_binlog(thd);
+  create_info->options|=HA_CREATE_TMP_ALTER;
   error= mysql_create_table_no_lock(thd, new_db, tmp_name, create_info,
                                     alter_info, NULL, create_table_mode);
   reenable_binlog(thd);