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Problem Report 0893 Details

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Report 0893 Actions

    Problem Report Number 0893
    Submitter's Classification Test Suite problem
    State Resolved
    Resolution Test Suite Deficiency (TSD)
    Problem Resolution ID TSD.X.0408
    Raised 1970-01-01 08:00
    Updated 2003-03-13 08:00
    Published 1995-10-30 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.upe/fc/fc 31
    Problem Summary TSD4C.00101 This test may fail intermittently on implementations where the command history wraps during the execution of the test such that needed recent command history is omitted when "fc -l 1" is executed.
    Problem Text
    This test may fail intermittently on implementations if the
    command history numbers wrap during execution of the test.

    When this happens expected history lines may be omitted when
    the command, "fc -l 1", is executed.

    The spec states that

    When the number reaches an implementation- dependent upper
    limit, which will be no smaller than the value in HISTSIZE or
    32767 (whichever is greater), the shell may wrap the numbers,
    starting the next command with a lower number (usually 1).
    However, despite this optional wrapping of numbers, fc will
    maintain the time-ordering sequence of the commands. For
    example, if four commands in sequence are given the numbers
    32766, 32767, 1 (wrapped), and 2 as they are executed, command
    32767 is considered the command previous to 1, even though its
    number is higher.

    However, the test cannot fail the "fc -l 1" command since the standard
    specifies

    When a range of commands is used, it will not be an error to
    specify first or last values that are not in the history list;
    fc will substitute the value representing the oldest or newest
    command in the list, as appropriate. For example, if there
    are only ten commands in the history list, numbered 1 to 10:

    fc -l
    fc 1 99

    will list and edit, respectively, all ten commands.
    Test Output
    200|1 1 11:28:52|TP Start
    520|1 1 86598 1 1|Assertion #31 (C): fc without -s and -l edits the
    previous one command.
    520|1 1 86598 1 1|Command failed: 'grep -q "echo goodbye" fc_data_31'
    220|1 1 2 11:29:03|UNRESOLVED
    410|1 31 1 11:29:03|IC End

    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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