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Problem Report 0569 Details

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This page provides all information on Problem Report 0569.

Report 0569 Actions

    Problem Report Number 0569
    Submitter's Classification Test Suite problem
    State Resolved
    Resolution Rejected (REJ)
    Problem Resolution ID REJ.X.0173
    Raised 1970-01-01 08:00
    Updated 2003-03-13 08:00
    Published null
    Product Standard Commands and Utilities V2 (UNIX 95)
    Certification Program The Open Brand certification program
    Test Suite VSC version 4.1.6
    Test Identification POSIX.cmd/expr 105
    Problem Summary PG4C.00104 This IR claims that the test is using multiple adjacent duplication symbols.
    Problem Text

    The test may fail, as the standard says the behavior of multiple adjacent
    duplication symbols (* and intervals) in a regular expression produces
    undefined results.

    The test shown depend on the output of expr, which matches a string with
    a regular expression that contains adjacent duplication symbols.

    The standard clearly says that behavior of
    multiple adjacent duplication symbols
    (* and intervals) produces undefined results.

    In view of the last sentence and as the test case expects the defined
    output from a regular expression which produces undefined results, we
    request for a waiver.
    Test Output
    ***********************************************************************
    /tset/POSIX.cmd/expr/expr.sh 1 Failed



    Test Information:
    Assertion #105 (A): GA142
    Note: An IEEE POSIX.2 interpretation request is pending on
    'nothing will be written to indicate a null string'.
    Testing regular expression
    "\\\\\\\\([a-c]*\\\\\\\\)\\\\\\\\{0,\\\\\\\\}"
    expected exit status 0, got 1
    Contents of regb_err:
    output differed from expected
    Expect output: "aabcaab"
    Actual output: ""
    Testing regular expression
    "\\\\\\\\([a-c]*\\\\\\\\)\\\\\\\\{2,\\\\\\\\}"
    Testing regular expression
    "\\\\\\\\(a\\\\\\\\{1,5100\\\\\\\\}\\\\\\\\)"


    ***********************************************************************

    Review Information

    Review Type TSMA Review
    Start Date null
    Completed null
    Status Complete
    Review Recommendation No Resolution Given
    Review Response
    We recommend this request be refused.

    We believe the statement made in section 7.3.6 of the XBD is
    being misinterpreted.

    The behaviour of multiple adjacent duplication symbols
    (* and intervals) produces undefined results.

    The test is not using multiple adjacent duplication symbols. Examples of
    multiple adjacent duplication symbols include the following:

    a**c
    a\{1,2\}\{3,4\}
    a*\{1,2\}

    Within the test, all of the duplications symbols are separated by
    a subexpression delimiter, so they are not adjacent.

    \([a-c]*\)\{0,\}
    \([a-c]*\)\{2,\}
    \(a{1,5100\}\)


    Review Type SA Review
    Start Date null
    Completed null
    Status Complete
    Review Resolution Rejected (REJ)
    Review Conclusion
    This request is refused.

    Problem Reporting System Options:

     

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