Bug#25081 SHOW FULL TABLES on table with latin chars in name fails

Problem: The Table_type column of "SHOW FULL TABLES" displayed
"ERROR" instead of "BASE TABLE" for tables having non-ascii
characters in their names.
Reason: tablename to filename encoding was missing, so
mysql_frm_type() tried to open a wrong file name.

Fix: adding tablename to filename encoding


mysql-test/r/show_check.result:
  Adding test case
mysql-test/t/show_check.test:
  Adding test case
sql/sql_show.cc:
  Adding tablename to filename encoding.
  Removing variable "end" with is not used anymore.

mysql-test/r/show_check.result

@@ -730,4 +730,12 @@ show keys from `mysqlttest\1`.`a\b`;
 Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment
 drop table `mysqlttest\1`.`a\b`;
 drop database `mysqlttest\1`;
+set names utf8;
+drop table if exists `été`;
+create table `été` (field1 int);
+show full tables;
+Tables_in_test	Table_type
+été	BASE TABLE
+drop table `été`;
+set names latin1;
 End of 5.1 tests

mysql-test/t/show_check.test

@@ -563,4 +563,16 @@ show keys from `mysqlttest\1`.`a\b`;
 drop table `mysqlttest\1`.`a\b`;
 drop database `mysqlttest\1`;
 
+#
+# Bug#25081 SHOW FULL TABLES on table with latin chars in name fails
+#
+set names utf8;
+--disable_warnings
+drop table if exists `été`;
+--enable_warnings
+create table `été` (field1 int);
+show full tables;
+drop table `été`;
+set names latin1;
+
 --echo End of 5.1 tests

sql/sql_show.cc

@@ -2490,7 +2490,7 @@ int get_all_tables(THD *thd, TABLE_LIST *tables, COND *cond)
   ST_SCHEMA_TABLE *schema_table= tables->schema_table;
   SELECT_LEX sel;
   INDEX_FIELD_VALUES idx_field_vals;
-  char path[FN_REFLEN], *end, *base_name, *orig_base_name, *file_name;
+  char path[FN_REFLEN], *base_name, *orig_base_name, *file_name;
   uint len;
   bool with_i_schema;
   enum enum_schema_tables schema_table_idx;
@@ -2507,7 +2507,6 @@ int get_all_tables(THD *thd, TABLE_LIST *tables, COND *cond)
   lex->view_prepare_mode= TRUE;
   DBUG_ENTER("get_all_tables");
 
-  LINT_INIT(end);
   LINT_INIT(len);
 
   lex->reset_n_backup_query_tables_list(&query_tables_list_backup);
@@ -2598,7 +2597,6 @@ int get_all_tables(THD *thd, TABLE_LIST *tables, COND *cond)
       else
       {
         len= build_table_filename(path, sizeof(path), base_name, "", "", 0);
-        end= path + len;
         len= FN_LEN - len;
         find_files_result res= find_files(thd, &files, base_name, 
                                           path, idx_field_vals.table_value, 0);
@@ -2648,7 +2646,9 @@ int get_all_tables(THD *thd, TABLE_LIST *tables, COND *cond)
               }
               else
               {
-                my_snprintf(end, len, "/%s%s", file_name, reg_ext);
+                build_table_filename(path, sizeof(path),
+                                     base_name, file_name, reg_ext, 0);
+
                 switch (mysql_frm_type(thd, path, &not_used)) {
                 case FRMTYPE_ERROR:
                   table->field[3]->store(STRING_WITH_LEN("ERROR"),