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Problem Report 0463 Details

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Report 0463 Actions

    Problem Report Number 0463
    Submitter's Classification Test Suite problem
    State Resolved
    Resolution Rejected (REJ)
    Problem Resolution ID REJ.X.0082
    Raised 1994-06-14 08:00
    Updated 2003-03-13 08:00
    Published null
    Product Standard Internationalised System Calls and Libraries (XPG4)
    Certification Program The Open Brand certification program
    Test Suite VSX4 version 4.3.4
    Test Identification XPG4.os/procenv/confstr 1
    Problem Summary PG4R.083 According to the American National Standard for Information Systems - Programming Language C, Doc No. X3J11/90-013, 3.5.6 Type definitions, 'If an object that has automatic storage duration is not in...
    Problem Text


    According to the American National Standard for Information Systems -
    Programming Language C, Doc No. X3J11/90-013, 3.5.6 Type definitions,
    'If an object that has automatic storage duration is not initialized
    explicitly, its value is indeteminate.'

    The variable buf[MAXVAL] is defined as a local variable. It should be
    initialized in the test to zero. The suggested change is as follow:

    /SCT/stds/xpg/vsx4/tset/XPG4.os/procenv/confstr/confstr.c

    Line 278: add after DBUG_ENTER("test1");

    for (i=0; i<MAXVAL;i++)
    buf[i]=0;

    Test Output

    /tset/XPG4.os/procenv/confstr/T.confstr 1 Failed

    Test Information:

    confstr(_CS_PATH,buf,len) failed
    when len < length of return value
    expected 71 bytes written to buf[]
    actually 73 bytes written to buf[]
    confstr(_CS_PATH,buf,len) failed
    when len = length of return value
    expected 72 bytes written to buf[]
    actually 73 bytes written to buf[]

    Review Information

    Review Type TSMA Review
    Start Date null
    Completed null
    Status Complete
    Review Recommendation No Resolution Given
    Review Response
    The description of confstr() in XSH4 states that:

    "If the string to be returned is longer than len bytes, including the
    terminating null, then confstr() truncates the string to len-1 bytes and
    null-terminates the results."

    It does not seem that the system under test is null-terminating the result
    in this manner and is writing additional bytes bwyond those requested into
    buf. It is not the responsibility of the application to fill the buffer
    with null characters, but rather the responsibility of the implementation
    to ensure that the string is null-terminated even if the string is longer
    than the number of bytes specified in the call to confstr().

    This does not seem to be a test suite deficiency and it is not recommended
    that a waiver be granted.

    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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