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Problem Report 0052 Details

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Report 0052 Actions

    Problem Report Number 0052
    Submitter's Classification Test Suite problem
    State Resolved
    Resolution Test Suite Deficiency (TSD)
    Problem Resolution ID TSD.X.0052
    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/setvbuf_X 4
    Problem Summary TSD4.052 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 is a case of "when is the buffer flushed?".
    When BUFSIZ/2 'c's are written, they are still in the buffer because
    there's enough room.

    The test must be changed to include an fflush() before checking for an
    updated underlying file in those cases where there is no new-line that
    will cause a flush due to _IOLBF.
    Test Output

    /tset/ANSI.os/streamio/setvbuf_X/T.setvbuf_X 4 Failed

    Test Description:
    type has "_IOLBF" set, setvbuf() sets stream to be line buffered on
    output, which means that the buffer will be flushed when, a newline is
    written, the buffer is full or input is requested.

    Test Strategy: {information removed}

    Test Information:
    buffer buf1 contained wrong character (a) at position 256

    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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