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Problem Report 0051 Details

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Report 0051 Actions

    Problem Report Number 0051
    Submitter's Classification Test Suite problem
    State Resolved
    Resolution Test Suite Deficiency (TSD)
    Problem Resolution ID TSD.X.0051
    Raised 1992-11-18 08:00
    Updated 2003-03-13 08:00
    Published 1992-11-27 08:00
    Product Standard Internationalised System Calls and Libraries (XPG4)
    Certification Program The Open Brand certification program
    Test Suite VSX4 version 4.2.3
    Test Identification ANSI.os/streamio/setbuf 2
    Problem Summary TSD4.051 This test makes assumptions about the underlying implementation of stdio buffering which is not required. The buffers for fully buffered stdio write streams are flushed only when: + fclose, fflush, fs...
    Problem Text
    This test makes assumptions about the underlying
    implementation of stdio buffering which is not required.
    The buffers for fully buffered stdio write streams are flushed only when:
    + fclose, fflush, fseek, or rewind is called,
    + the stream is freopen'd, or
    + when an attempt to add another byte to the buffer fails because it is full.

    This test makes an assumption that when BUFSIZ bytes have been presented to
    be written that they will be flushed to the file. This cannot be assumed
    since there is no guarantee that stdio must flush the buffer as soon as it
    is filled (i.e., it can wait until at least one more byte is presented to be
    written), or that the true buffer size is BUFSIZ (since stdio does not have
    to use the provided buffer, or since other buffers could be used as well as
    the one provided).

    The test needs to be fixed so that it calls fflush() before it expects to see
    an updated file.

    Test Output
    /tset/ANSI.os/streamio/setbuf/T.setbuf 2 Failed

    Test Description:
    setbuf() causes data fwritten() to the stream to be buffered into the
    array buf. The buffer will be flushed when it is full.

    Test Strategy: {information removed}

    Test Information:
    buffer buf1 contained wrong character (a) at position 512

    Review Information

    Review Type TSMA Review
    Start Date null
    Completed null
    Status Complete
    Review Recommendation No Resolution Given
    Review Response
    This is accepted as a test suite deficiency and a modification has been
    supplied in VSX 4.2.4 in an attempt to resolve this.

    Review Type SA Review
    Start Date null
    Completed null
    Status Complete
    Review Resolution Test Suite Deficiency (TSD)
    Review Conclusion
    A test suite deficiency is granted.

    Problem Reporting System Options:

     

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