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<br /><table class="width100" cellspacing="1"><tr><td class="form-title" colspan="6"><div class="center">ETSI's Bug Tracker - Part 01: TTCN-3 Core Language</div></td></tr><tr><td class="form-title" colspan="6">View Issue Details</td></tr><tr><td class="print-spacer" colspan="6"><hr size="1" /></td></tr><tr class="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="print"><td class="print">0006237</td><td class="print">Part 01: TTCN-3 Core Language</td><td class="print">Editorial</td><td class="print">public</td><td class="print">01-08-2012 09:23</td><td class="print">08-08-2012 09:38</td></tr><tr><td class="print-spacer" colspan="6"><hr size="1" /></td></tr><tr class="print"><td class="print-category">Reporter</td><td class="print">Tomas Urban</td><td class="print" colspan="4">&#160;</td></tr><tr class="print"><td class="print-category">Assigned To</td><td class="print">Tomas Urban</td><td class="print" colspan="4">&#160;</td></tr><tr class="print"><td class="print-category">Priority</td><td class="print">normal</td><td class="print-category">Severity</td><td class="print">minor</td><td class="print-category">Reproducibility</td><td class="print">have not tried</td></tr><tr class="print"><td class="print-category">Status</td><td class="print">closed</td><td class="print-category">Resolution</td><td class="print">won't fix</td><td class="print" colspan="2">&#160;</td></tr><tr class="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="print"><td class="print-category">Product Version</td><td class="print">v4.4.1 (published 2012-04)</td><td class="print" colspan="4">&#160;</td></tr><tr><td class="print-category">Target Version</td><td class="print">v4.5.1 (published 2013-04)</td><td class="print-category">Fixed in Version</td><td class="print"></td><td class="print" colspan="2">&#160;</td></tr><tr class="print"><td class="print-category">Clause Reference(s)</td><td class="print" colspan="4">10</td></tr><tr class="print"><td class="print-category">Source  (company  - Author)</td><td class="print" colspan="4">Elvior</td></tr><tr><td class="print-spacer" colspan="6"><hr size="1" /></td></tr><tr class="print"><td class="print-category">Summary</td><td class="print" colspan="5">0006237: Expressions in constant declarations</td></tr><tr class="print"><td class="print-category">Description</td><td class="print" colspan="5">The syntactical structure for constant declaration in chapter 10 and rule 78 in the BNF refer to &quot;ConstantExpression&quot;. ConstantExpression is defined in the BNF rule 496, but is in fact syntactically equal to the rule 489 (Expression). The BNF doesn't contain any other semantic restrictions on &quot;ConstantExpression&quot; that would make it different from a common expression. Since the general tendency in the last revisions of the standard was removal of syntactically identical rules, I propose to remove the rule 496 and 506 and replace all references to ConstantExpression with a reference to Expression.<br />
<br />
I would also appreciate if the chapter 10 contained an example of a constant initialized with a runtime-resolved expression (e.g. const float MyConst3 := rnd();) to demonstrate the runtime character of constants in TTCN-3, because this is quite unusual behaviour comparing to commonly used programming languages (C++, C#).<br />
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</td></tr><tr class="print"><td class="print-category">Steps To Reproduce</td><td class="print" colspan="5"></td></tr><tr class="print"><td class="print-category">Additional Information</td><td class="print" colspan="5"></td></tr><tr class="print"><td class="print-category">Tags</td><td class="print" colspan="5">No tags attached.</td></tr><tr class="print"><td class="print-category">Relationships</td><td class="print" colspan="5"></td></tr><tr class="print"><td class="print-category">Attached Files</td><td class="print" colspan="5"><img src="http://oldforge.etsi.org/mantis/images/fileicons/doc.gif" alt="doc" />&#160;CR6237_resolution_v1.doc (74,752) <span class="italic">07-08-2012 17:38</span><br />http://oldforge.etsi.org/mantis/file_download.php?file_id=2708&amp;type=bug</td></tr><tr><td class="print-spacer" colspan="6"><hr size="1" /></td></tr><tr><td class="form-title">Issue History</td></tr><tr class="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></tr><tr class="print"><td class="print">01-08-2012 09:23</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=659">Tomas Urban</a></td><td class="print">New Issue</td><td class="print"></td></tr><tr class="print"><td class="print">01-08-2012 09:23</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=659">Tomas Urban</a></td><td class="print">Clause Reference(s)</td><td class="print"> =&gt; 10</td></tr><tr class="print"><td class="print">01-08-2012 09:23</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=659">Tomas Urban</a></td><td class="print">Source  (company  - Author)</td><td class="print"> =&gt; Elvior</td></tr><tr class="print"><td class="print">06-08-2012 13:05</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=659">Tomas Urban</a></td><td class="print">Note Added: 0010975</td><td class="print"></td></tr><tr class="print"><td class="print">07-08-2012 16:57</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">new =&gt; assigned</td></tr><tr class="print"><td class="print">07-08-2012 16:57</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"> =&gt; Gyorgy Rethy</td></tr><tr class="print"><td class="print">07-08-2012 17:36</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: 0010986</td><td class="print"></td></tr><tr class="print"><td class="print">07-08-2012 17:38</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=127">Gyorgy Rethy</a></td><td class="print">File Added: CR6237_resolution_v1.doc</td><td class="print"></td></tr><tr class="print"><td class="print">07-08-2012 17:39</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: 0010986</td><td class="print"></td></tr><tr class="print"><td class="print">07-08-2012 17:39</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; Tomas Urban</td></tr><tr class="print"><td class="print">08-08-2012 09:38</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">assigned =&gt; closed</td></tr><tr class="print"><td class="print">08-08-2012 09:38</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=127">Gyorgy Rethy</a></td><td class="print">Resolution</td><td class="print">open =&gt; won't fix</td></tr><tr class="print"><td class="print">08-08-2012 09:38</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=127">Gyorgy Rethy</a></td><td class="print">Target Version</td><td class="print"> =&gt; Edition 4.5.1</td></tr></table>
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				(0010975)
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				<a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=659">Tomas Urban</a>&#160;&#160;&#160;
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				06-08-2012 13:05&#160;&#160;&#160;
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				I am sorry for misleading second part of the message. I got this issue from one of our developers and forgot to verify all the facts. In fact, C++ constants are runtime constants and C# constant approach is quite unique, since it supports two types of constants (compile-time resolved const and runtime resolved readonly).			</td>
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				(0010986)
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				<a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=127">Gyorgy Rethy</a>&#160;&#160;&#160;
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				07-08-2012 17:36&#160;&#160;&#160;
				<br />(edited on:&#32;07-08-2012 17:39)			</td>
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				Regarding the BNF question: in fact constant and variable definitions differ in one case, in constants no &quot;unchanged&quot; (dash) can be used for a field or element, in variables it can be used:<br />
502. ArrayElementExpressionList ::= NotUsedOrExpression {&quot;,&quot; NotUsedOrExpression}<br />
503. NotUsedOrExpression ::= Expression | Minus<br />
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510. ArrayElementConstExpressionList ::= ConstantExpression {&quot;,&quot; ConstantExpression}<br />
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So, I propose not to chanhe the BNF.<br />
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Regarding the example:<br />
I have added one, see the file CR6237_resolution_v1.doc.<br />
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Pls. check if this is OK with you.<br />
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