DDS-XTypes 1.2 RTF Avatar
  1. OMG Issue

DDSXTY12 — member ID algorithm flawed

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  • Key: DDSXTY12-23
  • Legacy Issue Number: 18298
  • Status: closed  
  • Source: ZettaScale Technology ( Mr. Erik Hendriks)
  • Summary:

    In section 7.3.1.3.1 is is stated that when explicitly assigning memberID's to some attributes (but not to all attributes), that:

    "In such cases, implicit values are assigned in a progression starting from the most-recently specified ID (or an implicit value of zero for the first constant, if there is no previous specified value) and adding one with each successive member."

    This algorithm could result in the same memberId being assigned multiple times. Consider the following example:

    struct A

    { long x; //@id 2 long y; //@id 1 long z; }

    ;
  • Reported: DDS-XTypes 1.1 — Wed, 12 Dec 2012 05:00 GMT
  • Disposition: Resolved — DDS-XTypes 1.2
  • Disposition Summary:

    Add clarifying text to section 7.3.1.3.1

    The main part of this issue is addressed in DDSXTY12-18. Therefore, the only thing we need to do here is clarify the member ID rules.

  • Updated: Thu, 22 Jun 2017 16:42 GMT