  

<table class="width100" style="width:100%;" data-cellspacing="1">
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<td colspan="6" class="form-title"><div class="center">
ETSI's Bug Tracker - Part 01: TTCN-3 Core Language
</div></td>
</tr>
<tr class="even">
<td colspan="6" class="form-title">View Issue Details</td>
</tr>
<tr class="odd">
<td colspan="6" class="print-spacer"><hr /></td>
</tr>
<tr class="even print-category">
<td class="print" width="16%">ID</td>
<td class="print" width="16%">Project</td>
<td class="print" width="16%">Category</td>
<td class="print" width="16%">View Status</td>
<td class="print" width="16%">Date Submitted</td>
<td class="print" width="16%">Last Update</td>
</tr>
<tr class="odd print">
<td class="print">0007826</td>
<td class="print">Part 01: TTCN-3 Core Language</td>
<td class="print">Technical</td>
<td class="print">public</td>
<td class="print">13-02-2019 08:26</td>
<td class="print">29-12-2019 13:04</td>
</tr>
<tr class="even">
<td colspan="6" class="print-spacer"><hr /></td>
</tr>
<tr class="odd print">
<td class="print-category">Reporter</td>
<td class="print">Wolfgang Seka</td>
<td colspan="4" class="print"> </td>
</tr>
<tr class="even print">
<td class="print-category">Assigned To</td>
<td class="print">Gyorgy Rethy</td>
<td colspan="4" class="print"> </td>
</tr>
<tr class="odd print">
<td class="print-category">Priority</td>
<td class="print">high</td>
<td class="print-category">Severity</td>
<td class="print">major</td>
<td class="print-category">Reproducibility</td>
<td class="print">have not tried</td>
</tr>
<tr class="even print">
<td class="print-category">Status</td>
<td class="print">closed</td>
<td class="print-category">Resolution</td>
<td class="print">no change required</td>
<td colspan="2" class="print"> </td>
</tr>
<tr class="odd print">
<td class="print-category">Platform</td>
<td class="print"></td>
<td class="print-category">OS</td>
<td class="print"></td>
<td class="print-category">OS Version</td>
<td class="print"></td>
</tr>
<tr class="even print">
<td class="print-category">Product Version</td>
<td class="print"></td>
<td colspan="4" class="print"> </td>
</tr>
<tr class="odd">
<td class="print-category">Target Version</td>
<td class="print"></td>
<td class="print-category">Fixed in Version</td>
<td class="print">4.12.1 (published 2020-05)</td>
<td colspan="2" class="print"> </td>
</tr>
<tr class="even print">
<td class="print-category">Clause Reference(s)</td>
<td colspan="4" class="print">Annex A.1.5 (maybe others)</td>
<td></td>
</tr>
<tr class="odd print">
<td class="print-category">Source (company - Author)</td>
<td colspan="4" class="print">MCC160 (Wolfgang)</td>
<td></td>
</tr>
<tr class="even">
<td colspan="6" class="print-spacer"><hr /></td>
</tr>
<tr class="odd print">
<td class="print-category">Summary</td>
<td colspan="5" class="print">0007826: Non-backward compatibility issue
with reserved words of extension packages</td>
</tr>
<tr class="even print">
<td class="print-category">Description</td>
<td colspan="5" class="print">Table A.5 defines reserved words in
extension packages but it is not clear how these shall be treated in
test suites not using extensions:<br />
1. TTCN-3 type definitions: Annex A says "... Using these terminals in
the code is not recommended as it might lead to issues in the
future"<br />
This is not a technical specification and therefore does not say exactly
whether or not a TTCN-3 type may use one of the keywords (e.g. as field
name in a record).<br />
On the other hand if it would not be allowed to use the extension
package keywords in TTCN-3 type definitions there is not backward
compatibility anymore with TTCN projects being older than the
extension.<br />
2. It is not clear whether or under which condition for fieldnames in
external type definition a "_" extension is needed. If it would be
needed for keywords of extension packages - again - there would be a
compatibility issue.<br />
On the other hand it is not clear whether or not compilers expect the
"_" (e.g. if we add the "_", do all tools and compilers accept this
??).<br />
In practice different compiler behaviour can be observed and it seems
that some compilers are changing (=&gt; compatibility issues).<br />
<br />
Conclusions:<br />
To avoid compatibility issues reserved words of extension packages shall
not affect test suites which do not use any extension. It is up to tool
implementation to cope with potential extensions but tools shall be able
to cope with test suites which ignore reserved words of extension
packages.</td>
</tr>
<tr class="odd print">
<td class="print-category">Steps To Reproduce</td>
<td colspan="5" class="print"></td>
</tr>
<tr class="even print">
<td class="print-category">Additional Information</td>
<td colspan="5" class="print">Example: "timestamp" is used as field name
in ETSI's "LibSip" and in several XSD type definitions.</td>
</tr>
<tr class="odd print">
<td class="print-category">Tags</td>
<td colspan="5" class="print">No tags attached.</td>
</tr>
<tr class="even print">
<td class="print-category">Relationships</td>
<td colspan="5" class="print"></td>
</tr>
<tr class="odd print">
<td class="print-category">Attached Files</td>
<td colspan="5" class="print"><img
src="http://oldforge.etsi.org/mantis/images/fileicons/doc.gif"
alt="docx" /> CR7826.docx (166,693) <span class="italic">08-08-2019
09:24</span><br />
http://oldforge.etsi.org/mantis/file_download.php?file_id=3843&amp;type=bug<br />
<img src="http://oldforge.etsi.org/mantis/images/fileicons/doc.gif"
alt="docx" /> CR7826-2.docx (166,436) <span class="italic">08-08-2019
10:08</span><br />
http://oldforge.etsi.org/mantis/file_download.php?file_id=3846&amp;type=bug</td>
</tr>
<tr class="even">
<td colspan="6" class="print-spacer"><hr /></td>
</tr>
<tr class="odd">
<td class="form-title">Issue History</td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr class="even print-category">
<td class="row-category-history">Date Modified</td>
<td class="row-category-history">Username</td>
<td class="row-category-history">Field</td>
<td class="row-category-history">Change</td>
<td></td>
<td></td>
</tr>
<tr class="odd print">
<td class="print">13-02-2019 08:26</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=455">Wolfgang
Seka</a></td>
<td class="print">New Issue</td>
<td class="print"></td>
<td></td>
<td></td>
</tr>
<tr class="even print">
<td class="print">13-02-2019 11:00</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=508">Jacob
Wieland - Spirent</a></td>
<td class="print">Note Added: 0015332</td>
<td class="print"></td>
<td></td>
<td></td>
</tr>
<tr class="odd print">
<td class="print">27-05-2019 11:26</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=508">Jacob
Wieland - Spirent</a></td>
<td class="print">Note Added: 0015345</td>
<td class="print"></td>
<td></td>
<td></td>
</tr>
<tr class="even print">
<td class="print">06-08-2019 10:01</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=361">KristÃ³f
Szabados</a></td>
<td class="print">Note Added: 0015371</td>
<td class="print"></td>
<td></td>
<td></td>
</tr>
<tr class="odd print">
<td class="print">06-08-2019 10:01</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=361">KristÃ³f
Szabados</a></td>
<td class="print">Status</td>
<td class="print">new =&gt; resolved</td>
<td></td>
<td></td>
</tr>
<tr class="even print">
<td class="print">06-08-2019 10:01</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=361">KristÃ³f
Szabados</a></td>
<td class="print">Resolution</td>
<td class="print">open =&gt; no change required</td>
<td></td>
<td></td>
</tr>
<tr class="odd print">
<td class="print">06-08-2019 10:01</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=361">KristÃ³f
Szabados</a></td>
<td class="print">Assigned To</td>
<td class="print">=&gt; Gyorgy Rethy</td>
<td></td>
<td></td>
</tr>
<tr class="even print">
<td class="print">08-08-2019 07:39</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=361">KristÃ³f
Szabados</a></td>
<td class="print">Note Added: 0015416</td>
<td class="print"></td>
<td></td>
<td></td>
</tr>
<tr class="odd print">
<td class="print">08-08-2019 07:39</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=361">KristÃ³f
Szabados</a></td>
<td class="print">Assigned To</td>
<td class="print">Gyorgy Rethy =&gt; KristÃ³f Szabados</td>
<td></td>
<td></td>
</tr>
<tr class="even print">
<td class="print">08-08-2019 07:39</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=361">KristÃ³f
Szabados</a></td>
<td class="print">Status</td>
<td class="print">resolved =&gt; assigned</td>
<td></td>
<td></td>
</tr>
<tr class="odd print">
<td class="print">08-08-2019 09:24</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=361">KristÃ³f
Szabados</a></td>
<td class="print">File Added: CR7826.docx</td>
<td class="print"></td>
<td></td>
<td></td>
</tr>
<tr class="even print">
<td class="print">08-08-2019 09:25</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=361">KristÃ³f
Szabados</a></td>
<td class="print">Note Added: 0015423</td>
<td class="print"></td>
<td></td>
<td></td>
</tr>
<tr class="odd print">
<td class="print">08-08-2019 09:25</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=361">KristÃ³f
Szabados</a></td>
<td class="print">Assigned To</td>
<td class="print">KristÃ³f Szabados =&gt; Jacob Wieland - Spirent</td>
<td></td>
<td></td>
</tr>
<tr class="even print">
<td class="print">08-08-2019 09:25</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=361">KristÃ³f
Szabados</a></td>
<td class="print">Status</td>
<td class="print">assigned =&gt; confirmed</td>
<td></td>
<td></td>
</tr>
<tr class="odd print">
<td class="print">08-08-2019 10:08</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=508">Jacob
Wieland - Spirent</a></td>
<td class="print">File Added: CR7826-2.docx</td>
<td class="print"></td>
<td></td>
<td></td>
</tr>
<tr class="even print">
<td class="print">08-08-2019 10:09</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=508">Jacob
Wieland - Spirent</a></td>
<td class="print">Note Added: 0015430</td>
<td class="print"></td>
<td></td>
<td></td>
</tr>
<tr class="odd print">
<td class="print">08-08-2019 10:09</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=508">Jacob
Wieland - Spirent</a></td>
<td class="print">Status</td>
<td class="print">confirmed =&gt; resolved</td>
<td></td>
<td></td>
</tr>
<tr class="even print">
<td class="print">08-08-2019 10:09</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=508">Jacob
Wieland - Spirent</a></td>
<td class="print">Assigned To</td>
<td class="print">Jacob Wieland - Spirent =&gt; Gyorgy Rethy</td>
<td></td>
<td></td>
</tr>
<tr class="odd print">
<td class="print">29-12-2019 11:27</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=127">Gyorgy
Rethy</a></td>
<td class="print">Project</td>
<td class="print">TTCN-3 Change Requests =&gt; Part 01: TTCN-3 Core
Language</td>
<td></td>
<td></td>
</tr>
<tr class="even print">
<td class="print">29-12-2019 13:04</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=127">Gyorgy
Rethy</a></td>
<td class="print">Note Added: 0015604</td>
<td class="print"></td>
<td></td>
<td></td>
</tr>
<tr class="odd print">
<td class="print">29-12-2019 13:04</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=127">Gyorgy
Rethy</a></td>
<td class="print">Status</td>
<td class="print">resolved =&gt; closed</td>
<td></td>
<td></td>
</tr>
<tr class="even print">
<td class="print">29-12-2019 13:04</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=127">Gyorgy
Rethy</a></td>
<td class="print">Fixed in Version</td>
<td class="print">=&gt; 4.12.1 (published 2020-05)</td>
<td></td>
<td></td>
</tr>
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<td class="nopad" data-valign="top" width="20%"><table class="hide"
data-cellspacing="1">
<tbody>
<tr class="odd">
<td class="print">(0015332)</td>
</tr>
<tr class="even">
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=508">Jacob
Wieland - Spirent</a>   </td>
</tr>
<tr class="odd">
<td class="print">13-02-2019 11:00   </td>
</tr>
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data-cellspacing="1">
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<td class="print">This is basically how it was handled in the past.
However, this carries its own set of problems that need solving as
well.<br />
<br />
If you import from a module of a different language, it is dependent on
what languages your module uses how the identifiers of the other module
are mapped to TTCN-3. Thus, it could even be the case that the same
external module used by two different modules would need a different
mapping on import.<br />
<br />
This causes maintenance nightmares and as soon as some additional
language is used in a later version of that module, it would introduce
backward incompatibility for the other definitions in that module as
well.<br />
<br />
That is why we decided that all reserved words should be treated
equally, no matter what language features are used. It is then the only
responsibility of the tool providers to deal with the global list of
reserved words (which should be in the core standard document so they
are mandatory). Also, we (the Evolution STF) try to stay away from new
non-@ keywords (we introduced the @-words for exactly that reason) when
introducing new language constructs to not cause backward compatibility
issues in the future.<br />
<br />
However, there's no perfect fully non-backward-incompatible solution of
this problem, so we opted for one where we thought it would cause the
least amount of problems, i.e. necessity for refactoring of old
code.</td>
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<tr class="even">
<td colspan="2" class="print-spacer"><hr /></td>
</tr>
<tr class="odd">
<td class="nopad" data-valign="top" width="20%"><table class="hide"
data-cellspacing="1">
<tbody>
<tr class="odd">
<td class="print">(0015345)</td>
</tr>
<tr class="even">
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=508">Jacob
Wieland - Spirent</a>   </td>
</tr>
<tr class="odd">
<td class="print">27-05-2019 11:26   </td>
</tr>
</tbody>
</table></td>
<td class="nopad" data-valign="top" width="85%"><table class="hide"
data-cellspacing="1">
<tbody>
<tr class="odd">
<td class="print">To avoid compatibility issues in test suites, the
modules of these test suites should always be marked with the language
version. If that is the case, no backward compatibility issues should
occur with correct tools as the tools would treat the package keywords
as reserved in all cases only for languagues after the version where
this was introduced.</td>
</tr>
</tbody>
</table></td>
</tr>
<tr class="even">
<td colspan="2" class="print-spacer"><hr /></td>
</tr>
<tr class="odd">
<td class="nopad" data-valign="top" width="20%"><table class="hide"
data-cellspacing="1">
<tbody>
<tr class="odd">
<td class="print">(0015371)</td>
</tr>
<tr class="even">
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=361">KristÃ³f
Szabados</a>   </td>
</tr>
<tr class="odd">
<td class="print">06-08-2019 10:01   </td>
</tr>
</tbody>
</table></td>
<td class="nopad" data-valign="top" width="85%"><table class="hide"
data-cellspacing="1">
<tbody>
<tr class="odd">
<td class="print">STF discussion: we aggree that this is a tool issue.
Tools should correctly implement the reserved word mapping based on the
language version of the importing module.</td>
</tr>
</tbody>
</table></td>
</tr>
<tr class="even">
<td colspan="2" class="print-spacer"><hr /></td>
</tr>
<tr class="odd">
<td class="nopad" data-valign="top" width="20%"><table class="hide"
data-cellspacing="1">
<tbody>
<tr class="odd">
<td class="print">(0015416)</td>
</tr>
<tr class="even">
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=361">KristÃ³f
Szabados</a>   </td>
</tr>
<tr class="odd">
<td class="print">08-08-2019 07:39   </td>
</tr>
</tbody>
</table></td>
<td class="nopad" data-valign="top" width="85%"><table class="hide"
data-cellspacing="1">
<tbody>
<tr class="odd">
<td class="print">STF discussion: make the sentence in question more
clear.</td>
</tr>
</tbody>
</table></td>
</tr>
<tr class="even">
<td colspan="2" class="print-spacer"><hr /></td>
</tr>
<tr class="odd">
<td class="nopad" data-valign="top" width="20%"><table class="hide"
data-cellspacing="1">
<tbody>
<tr class="odd">
<td class="print">(0015423)</td>
</tr>
<tr class="even">
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=361">KristÃ³f
Szabados</a>   </td>
</tr>
<tr class="odd">
<td class="print">08-08-2019 09:25   </td>
</tr>
</tbody>
</table></td>
<td class="nopad" data-valign="top" width="85%"><table class="hide"
data-cellspacing="1">
<tbody>
<tr class="odd">
<td class="print">Please check.</td>
</tr>
</tbody>
</table></td>
</tr>
<tr class="even">
<td colspan="2" class="print-spacer"><hr /></td>
</tr>
<tr class="odd">
<td class="nopad" data-valign="top" width="20%"><table class="hide"
data-cellspacing="1">
<tbody>
<tr class="odd">
<td class="print">(0015430)</td>
</tr>
<tr class="even">
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=508">Jacob
Wieland - Spirent</a>   </td>
</tr>
<tr class="odd">
<td class="print">08-08-2019 10:09   </td>
</tr>
</tbody>
</table></td>
<td class="nopad" data-valign="top" width="85%"><table class="hide"
data-cellspacing="1">
<tbody>
<tr class="odd">
<td class="print">deleted doubled sentence, otherwise ok</td>
</tr>
</tbody>
</table></td>
</tr>
<tr class="even">
<td colspan="2" class="print-spacer"><hr /></td>
</tr>
<tr class="odd">
<td class="nopad" data-valign="top" width="20%"><table class="hide"
data-cellspacing="1">
<tbody>
<tr class="odd">
<td class="print">(0015604)</td>
</tr>
<tr class="even">
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=127">Gyorgy
Rethy</a>   </td>
</tr>
<tr class="odd">
<td class="print">29-12-2019 13:04   </td>
</tr>
</tbody>
</table></td>
<td class="nopad" data-valign="top" width="85%"><table class="hide"
data-cellspacing="1">
<tbody>
<tr class="odd">
<td class="print">Included in final draft V4.11.3</td>
</tr>
</tbody>
</table></td>
</tr>
</tbody>
</table>
