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• File library/GSUP_Templates.ttcn:

  • Patch Set #2, Line 1412: ies[idx] := *;

    well, the comment says something about a specific IE type (OSMO_GSUP_MESSAGE_CLASS_IE) while the act […]

    Right. There's unfortunately no way to express that we optionally expect a specific kind of IE here, i.e. either OSMO_GSUP_MESSAGE_CLASS_IE or nothing. I tried several things:

    • a) `ies[idx] = tr_GSUP_IE_Message_Class(OSMO_GSUP_MESSAGE_CLASS_USSD) ifpresent`
    • b) `ies[idx] = (tr_GSUP_IE_Message_Class(OSMO_GSUP_MESSAGE_CLASS_USSD), omit)`
    • c) `ies[idx] = * length(0..1)`

    and none of this compiled. The a) used to work, but then was removed in TITAN [1]; the b) does not compile. The c) is permitted by the specs and would allow to at least limit number of IEs in this position (none or one), but TITAN does not implement this syntax [2].

    [1] https://www.eclipse.org/forums/index.php/t/1103442/
    [2] https://gitlab.eclipse.org/eclipse/titan/titan.core/-/issues/743

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