ETSI's Bug Tracker - Part 01: TTCN-3 Core Language |
| View Issue Details |
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| ID | Project | Category | View Status | Date Submitted | Last Update |
| 0003383 | Part 01: TTCN-3 Core Language | Clarification | public | 16-05-2008 10:29 | 09-12-2008 14:33 |
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| Reporter | Thomas Deiß | |
| Assigned To | Ina Schieferdecker | |
| Priority | normal | Severity | minor | Reproducibility | N/A |
| Status | closed | Resolution | fixed | |
| Platform | | OS | | OS Version | |
| Product Version | v3.3.2 (published 2008-04) | |
| Target Version | v4.1.1 (published 2009-06) | Fixed in Version | v4.1.1 (published 2009-06) | |
| Clause Reference(s) | 7, 16.1.1, 16.2.1, |
| Source (company - Author) | Nokia Siemens Networks, Thomas Deiß |
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| Summary | 0003383: Order of assignments of fields |
| Description | Part 1 does not define the order of assignments of fields or elements of structured types. Consider the following example:
module assign {
type record t {
integer a,
integer b
}
control {
var t x;
x := {2, 3};
x := { a := 4, b := x.a }
log(x.b);
x := {2, 3};
x := {4, x.a};
log(x.b);
}
}
Part 1 leaves it open in which order the individual fields are processed. I suggest to add a statement to clause 7 that operands in expressions, including fields in structured types are evaluated from left to right.
A similar sentence should be added to the invocation of functions or altsteps: Actual parameters are evaluated from left to right.
Part 4 does not resolve this issue either. |
| Steps To Reproduce | |
| Additional Information | |
| Tags | No tags attached. |
| Relationships | |
| Attached Files |  CR3383_OrderOfAssignments.doc (110,592) 27-11-2008 14:29
http://oldforge.etsi.org/mantis/file_download.php?file_id=1817&type=bug
CR3383_OrderOfAssignments_02.doc (114,688) 28-11-2008 08:19
http://oldforge.etsi.org/mantis/file_download.php?file_id=1827&type=bug
CR3383_InoutParameterization.doc (24,576) 28-11-2008 10:57
http://oldforge.etsi.org/mantis/file_download.php?file_id=1834&type=bug |
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| Issue History |
| Date Modified | Username | Field | Change |
| 16-05-2008 10:29 | Thomas Deiß | New Issue | |
| 16-05-2008 10:29 | Thomas Deiß | Status | new => assigned |
| 16-05-2008 10:29 | Thomas Deiß | Assigned To | => Ina Schieferdecker |
| 16-05-2008 10:29 | Thomas Deiß | Clause Reference(s) | => 7, 16.1.1, 16.2.1, |
| 16-05-2008 10:29 | Thomas Deiß | Source (company - Author) | => Nokia Siemens Networks, Thomas Deiß |
| 17-08-2008 09:34 | Ina Schieferdecker | Target Version | => Edition 4.1.1 (not yet published) |
| 29-08-2008 04:30 | Thomas Deiß | Note Added: 0006647 | |
| 18-09-2008 04:16 | Thomas Deiß | Relationship added | related to 0004155 |
| 27-11-2008 10:35 | Ina Schieferdecker | File Added: CR3383_OrderOfAssignments.doc | |
| 27-11-2008 10:36 | Ina Schieferdecker | Note Added: 0007468 | |
| 27-11-2008 10:36 | Ina Schieferdecker | Assigned To | Ina Schieferdecker => Thomas Deiß |
| 27-11-2008 10:36 | Ina Schieferdecker | Resolution | open => fixed |
| 27-11-2008 14:28 | Ina Schieferdecker | File Deleted: CR3383_OrderOfAssignments.doc | |
| 27-11-2008 14:29 | Ina Schieferdecker | File Added: CR3383_OrderOfAssignments.doc | |
| 28-11-2008 08:19 | Thomas Deiß | File Added: CR3383_OrderOfAssignments_02.doc | |
| 28-11-2008 08:20 | Thomas Deiß | Note Added: 0007491 | |
| 28-11-2008 08:20 | Thomas Deiß | Assigned To | Thomas Deiß => Ina Schieferdecker |
| 28-11-2008 10:57 | Ina Schieferdecker | File Added: CR3383_InoutParameterization.doc | |
| 09-12-2008 14:33 | Ina Schieferdecker | Status | assigned => resolved |
| 09-12-2008 14:33 | Ina Schieferdecker | Fixed in Version | => Edition 4.1.1 (not yet published) |
| 09-12-2008 14:33 | Ina Schieferdecker | Status | resolved => closed |
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Notes |
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It should be further clarified whether expressions on the left hand side of an assignment are evaluated before or after those on the right hand side. Also the precedence of . and [] in comparison to the other operators is unclear.
In the subsequent example it is actually quite unclear, what the result would be.
module evaluation {
function inc(inout integer n) return integer {
n := n + 1
return n
}
control {
var integer i := -1
var integer a[8] := {3, 6, 4, 9, 13, 0, 23, 66}
a[inc(i)] := a[inc(a[inc(i)])] + (a[inc(i)] - a[inc(i)])
// a[0] := a[7] + (a[2] - a[3])
// a is now {3, 7, 4, 9, 13, 0, 23, 66}
// a[0] := 66 + (4 - 9)
// a[0] := 61
}
} |
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