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Problem Report 0851 Details

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Report 0851 Actions

    Problem Report Number 0851
    Submitter's Classification Test Suite problem
    State Resolved
    Resolution Test Suite Deficiency (TSD)
    Problem Resolution ID TSD.X.0366
    Raised 1970-01-01 08:00
    Updated 2003-03-13 08:00
    Published 1996-01-02 08:00
    Product Standard Commands and Utilities V2 (UNIX 95)
    Certification Program The Open Brand certification program
    Test Suite VSC version 4.1.4
    Test Identification POSIX.cmd/awk 426
    Problem Summary TSD4C.00145 This test may fail on implementations because the standard does not specify the behavior of the null expression {0,0}.
    Problem Text
    This test may fail on implementations because the standard does
    not specify the behavior of the null expression {0,0}.

    We believe that test awk[426] should be granted a permanent waiver.

    The VSC test awk[426] states:

    Note: The behavior associated with this assertion is currently
    the subject of an IEEE POSIX.2 interpretation request and may
    change in a future revision of POSIX.2.

    The related PASC Interpretation reference 1003.2-#125 states that:

    "Parentheses are not grouping characters in a BRE. Assuming that what was
    intended was BRE="\([a-c]*\)\{0,0\}" then a literal reading of the
    text would say that this expression is equivalent to the null regular
    expression. The meaning of the null regular expression is not specified
    by the standard, and as such no conformance distinction can be made
    between alternative implementations based on this. This is being referred
    to the sponsor."

    This means that there is no standard behaviour for this regular expression.
    So, the behaviour of the regular expression ([a-c]*)\{0,0\} is unspecified.
    This interpretation became final 11 September 1995.
    Test Output
    /tset/POSIX.cmd/awk/awk.ex 1 Failed


    Test Information:
    Assertion #426 (A):
    Note: The behavior associated with this assertion is currently
    the subject of an IEEE POSIX.2 interpretation request and may
    change in a future revision of POSIX.2.
    diff of "awk.stdout" and "awk.exp":
    *** awk.stdout Fri Dec 8 16:52:24 1995
    --- awk.exp Fri Dec 8 16:52:24 1995
    ***************
    *** 1,4 ****
    zzccccccd
    abababccccccd
    ! zzdzz
    zz
    --- 1,4 ----
    zzccccccd
    abababccccccd
    ! zzdzzazzbzzczz
    zz
    Unexpected exit status for diff
    ************************************************************************

    Review Information

    Review Type TSMA Review
    Start Date null
    Completed null
    Status Complete
    Review Recommendation No Resolution Given
    Review Response
    We agree this is a test suite deficiency in the test
    suite version(s) listed.

    Review Type SA Review
    Start Date null
    Completed null
    Status Complete
    Review Resolution Test Suite Deficiency (TSD)
    Review Conclusion
    This is an agreed Test Suite Deficiency.

    Problem Reporting System Options:

     

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