  

<table class="width100" style="width:100%;" data-cellspacing="1">
<colgroup>
<col style="width: 16%" />
<col style="width: 16%" />
<col style="width: 16%" />
<col style="width: 16%" />
<col style="width: 16%" />
<col style="width: 16%" />
</colgroup>
<tbody>
<tr class="odd">
<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">0003970</td>
<td class="print">Part 01: TTCN-3 Core Language</td>
<td class="print">Clarification</td>
<td class="print">public</td>
<td class="print">15-08-2008 10:00</td>
<td class="print">09-12-2008 16:37</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">Thomas DeiÃŸ</td>
<td colspan="4" class="print"> </td>
</tr>
<tr class="even print">
<td class="print-category">Assigned To</td>
<td class="print">Ina Schieferdecker</td>
<td colspan="4" class="print"> </td>
</tr>
<tr class="odd print">
<td class="print-category">Priority</td>
<td class="print">normal</td>
<td class="print-category">Severity</td>
<td class="print">major</td>
<td class="print-category">Reproducibility</td>
<td class="print">N/A</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">fixed</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">v4.1.1 (published 2009-06)</td>
<td class="print-category">Fixed in Version</td>
<td class="print">v4.1.1 (published 2009-06)</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">part 1, 6.3</td>
<td></td>
</tr>
<tr class="odd print">
<td class="print-category">Source (company - Author)</td>
<td colspan="4" class="print">Nokia Siemens Networks, Thomas DeiÃŸ</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">0003970: Type compatibility not defined
for union types</td>
</tr>
<tr class="even print">
<td class="print-category">Description</td>
<td colspan="5" class="print">Part 1 does not explain when a value of a
union type is compatible with another union type. Neither does it state
that union types are not compatible to each other.<br />
<br />
type union U {integer i};<br />
type union V {integer i, boolean b};<br />
<br />
...<br />
var U u := {i := 1};<br />
var V v := u; // correct??<br />
var anytype w := u; // correct??</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"></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="doc" /> CR3970_UnionCompatibility.doc (55,296) <span
class="italic">24-11-2008 11:54</span><br />
http://oldforge.etsi.org/mantis/file_download.php?file_id=1758&amp;type=bug<br />
<img src="http://oldforge.etsi.org/mantis/images/fileicons/doc.gif"
alt="doc" /> CR3970_UnionCompatibility_02.doc (51,712) <span
class="italic">27-11-2008 08:49</span><br />
http://oldforge.etsi.org/mantis/file_download.php?file_id=1810&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">15-08-2008 10:00</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=112">Thomas
DeiÃŸ</a></td>
<td class="print">New Issue</td>
<td class="print"></td>
<td></td>
<td></td>
</tr>
<tr class="even print">
<td class="print">15-08-2008 10:00</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=112">Thomas
DeiÃŸ</a></td>
<td class="print">Clause Reference(s)</td>
<td class="print">=&gt; part 1, 6.3</td>
<td></td>
<td></td>
</tr>
<tr class="odd print">
<td class="print">15-08-2008 10:00</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=112">Thomas
DeiÃŸ</a></td>
<td class="print">Source (company - Author)</td>
<td class="print">=&gt; Nokia Siemens Networks, Thomas DeiÃŸ</td>
<td></td>
<td></td>
</tr>
<tr class="even print">
<td class="print">15-08-2008 10:01</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=112">Thomas
DeiÃŸ</a></td>
<td class="print">Status</td>
<td class="print">new =&gt; assigned</td>
<td></td>
<td></td>
</tr>
<tr class="odd print">
<td class="print">15-08-2008 10:01</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=112">Thomas
DeiÃŸ</a></td>
<td class="print">Assigned To</td>
<td class="print">=&gt; Ina Schieferdecker</td>
<td></td>
<td></td>
</tr>
<tr class="even print">
<td class="print">17-08-2008 09:06</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=81">Ina
Schieferdecker</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="odd print">
<td class="print">17-08-2008 09:07</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=81">Ina
Schieferdecker</a></td>
<td class="print">Category</td>
<td class="print">TTCN-3 Core Language =&gt; Clarification</td>
<td></td>
<td></td>
</tr>
<tr class="even print">
<td class="print">17-08-2008 09:07</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=81">Ina
Schieferdecker</a></td>
<td class="print">Target Version</td>
<td class="print">=&gt; Edition 4.1.1 (not yet published)</td>
<td></td>
<td></td>
</tr>
<tr class="odd print">
<td class="print">24-11-2008 11:54</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=81">Ina
Schieferdecker</a></td>
<td class="print">File Added: CR3970_UnionCompatibility.doc</td>
<td class="print"></td>
<td></td>
<td></td>
</tr>
<tr class="even print">
<td class="print">24-11-2008 11:54</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=81">Ina
Schieferdecker</a></td>
<td class="print">Assigned To</td>
<td class="print">Ina Schieferdecker =&gt; Gyorgy Rethy</td>
<td></td>
<td></td>
</tr>
<tr class="odd print">
<td class="print">24-11-2008 11:55</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=81">Ina
Schieferdecker</a></td>
<td class="print">Note Added: 0007386</td>
<td class="print"></td>
<td></td>
<td></td>
</tr>
<tr class="even print">
<td class="print">26-11-2008 13:48</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: 0007447</td>
<td class="print"></td>
<td></td>
<td></td>
</tr>
<tr class="odd print">
<td class="print">26-11-2008 13:49</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 Edited: 0007447</td>
<td class="print"></td>
<td></td>
<td></td>
</tr>
<tr class="even print">
<td class="print">26-11-2008 13:49</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=127">Gyorgy
Rethy</a></td>
<td class="print">Assigned To</td>
<td class="print">Gyorgy Rethy =&gt; Thomas DeiÃŸ</td>
<td></td>
<td></td>
</tr>
<tr class="odd print">
<td class="print">27-11-2008 08:49</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=112">Thomas
DeiÃŸ</a></td>
<td class="print">File Added: CR3970_UnionCompatibility_02.doc</td>
<td class="print"></td>
<td></td>
<td></td>
</tr>
<tr class="even print">
<td class="print">27-11-2008 08:53</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=112">Thomas
DeiÃŸ</a></td>
<td class="print">Note Added: 0007466</td>
<td class="print"></td>
<td></td>
<td></td>
</tr>
<tr class="odd print">
<td class="print">27-11-2008 08:53</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=112">Thomas
DeiÃŸ</a></td>
<td class="print">Assigned To</td>
<td class="print">Thomas DeiÃŸ =&gt; Ina Schieferdecker</td>
<td></td>
<td></td>
</tr>
<tr class="even print">
<td class="print">09-12-2008 16:37</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=81">Ina
Schieferdecker</a></td>
<td class="print">Status</td>
<td class="print">assigned =&gt; resolved</td>
<td></td>
<td></td>
</tr>
<tr class="odd print">
<td class="print">09-12-2008 16:37</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=81">Ina
Schieferdecker</a></td>
<td class="print">Resolution</td>
<td class="print">open =&gt; fixed</td>
<td></td>
<td></td>
</tr>
<tr class="even print">
<td class="print">09-12-2008 16:37</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=81">Ina
Schieferdecker</a></td>
<td class="print">Fixed in Version</td>
<td class="print">=&gt; Edition 4.1.1 (not yet published)</td>
<td></td>
<td></td>
</tr>
<tr class="odd print">
<td class="print">09-12-2008 16:37</td>
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=81">Ina
Schieferdecker</a></td>
<td class="print">Status</td>
<td class="print">resolved =&gt; closed</td>
<td></td>
<td></td>
</tr>
</tbody>
</table>

  

<table class="width100" data-cellspacing="1">
<colgroup>
<col style="width: 50%" />
<col style="width: 50%" />
</colgroup>
<tbody>
<tr class="odd">
<td colspan="2" class="form-title">Notes</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">(0007386)</td>
</tr>
<tr class="even">
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=81">Ina
Schieferdecker</a>   </td>
</tr>
<tr class="odd">
<td class="print">24-11-2008 11:55   </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">
<colgroup>
<col style="width: 100%" />
</colgroup>
<tbody>
<tr class="odd">
<td class="print">(0007447)</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">26-11-2008 13:48   <br />
(edited on: 26-11-2008 13:49)</td>
</tr>
</tbody>
</table></td>
<td class="nopad" data-valign="top" width="85%"><table class="hide"
data-cellspacing="1">
<colgroup>
<col style="width: 100%" />
</colgroup>
<tbody>
<tr class="odd">
<td class="print">I agree to add the clause to the standard, but...
Is<br />
type union U1 {integer i};<br />
type union U2 {integer i (0..1), boolean b};<br />
<br />
function f( U1 p_u1) {<br />
    var U2 u2 := p_u1; // also correct?<br />
}<br />
We will know this only runtime. In this case either<br />
 - no need for identical fields for ALL fields of U1 in U2, enough if
the selected field is compatible,<br />
or<br />
 - the type of all identical fields of U2 shall be the same or subtypes
the corresponding fields in U2. I.e. the above example becomes
incorrect, but we gain compile time check-ability. In this case the
correct example is<br />
type union U1 {integer i(0..1)};<br />
type union U2 {integer i, boolean b};<br />
<br />
function f( U1 p_u1) {<br />
    var U2 u2 := p_u1; // also correct?<br />
}<br />
<br />
I vote for the 2nd solution and propose to change also existing
compatibility rules accordingly.<br />
<br />
</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">(0007466)</td>
</tr>
<tr class="even">
<td class="print"><a
href="http://oldforge.etsi.org/mantis/view_user_page.php?id=112">Thomas
DeiÃŸ</a>   </td>
</tr>
<tr class="odd">
<td class="print">27-11-2008 08:53   </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">I suggest to stick to the proposed solution with
identical definitions. Otherwise the definitions on unselected fields
would impact the type compatibility. Also, we would have to compare the
type definitions to decide whether a value is compatible with a
type.</td>
</tr>
</tbody>
</table></td>
</tr>
</tbody>
</table>
