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Key: CORE-6336
Type: Bug Bug
Status: Closed Closed
Resolution: Fixed
Priority: Major Major
Assignee: Adriano dos Santos Fernandes
Reporter: Pavel Zotov
Votes: 0
Watchers: 3

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Firebird Core

Regression in FB 4.x: error "Implementation of text subtype <NNNN> not located" on attempt to use some collations defined in fbintl.conf

Created: 19/Jun/20 06:12 AM   Updated: 21/Jul/20 10:56 AM
Component/s: Charsets/Collation
Affects Version/s: None
Fix Version/s: 4.0 RC 1

File Attachments: 1. File check-collations-from-fbintl-conf_-_SQL-and-logs-for-3x-4x.7z (3 kB)

QA Status: Done successfully

 Description  « Hide
File %FB_HOME%\intl\fbintl.conf has content with definitions of miscelaneous charsets and their collations, e.g.:

charset = DOS437 {
    intl_module = fbintl
    collation = DOS437
    collation = DOS437_UNICODE
    collation = DB_DEU437
    . . .
charset = DOS850 {
    intl_module = fbintl
    collation = DOS850
    collation = DOS850_UNICODE
    . . .
. . .

Content of this file is the same in FB 3.x and 4.x.

I've created SQL script which tries to:
* create DB with each of these charsets,
* alter charset with assigning new default collation to it (for every collation that are defined for this charset), i.e.:
    alter character set DOS437 set default collation DB_US437;
* create view with trivial DDL:
    recreate view v_info as select f.rdb$field_name as f_name from rdb$fields f where f.rdb$field_name = upper('dm_name');

Main problem: there are lot of collations which can not be used anymore in 4.x: RECREATE VIEW issues "Implementation of text subtype <NNNN> not located".

Also, one may to see that almost all charsets actually have *no* collation with suffix = "_UNICODE", e.g:


( except tis620, gbk, cp943c and gb18030 - they *do* have such collations)

SQL and logs see in attached .7z

Checked on Windows 8.1 x64, FB:;

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