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Problem Report 0102 Details

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Report 0102 Actions

    Problem Report Number 0102
    Submitter's Classification Test Suite problem
    State Resolved
    Resolution Test Suite Deficiency (TSD)
    Problem Resolution ID TSD.X.0102
    Raised 1993-11-01 08:00
    Updated 2003-03-13 08:00
    Published 1993-11-05 08:00
    Product Standard Internationalised System Calls and Libraries (XPG4)
    Certification Program The Open Brand certification program
    Test Suite VSX4 version 4.2.4
    Test Identification XPG4.os/wstring/wcsncpy 1
    Problem Summary TSD4.102 We think that the following source taken from test1() of wcsncpy has an error: 1 for (i = 0, wcp1 = wsto, wcp2 = expws; i < wslen; i++) 2 { 3 if (i == 0) 4 PATH_TRACE; 5 *wcp2++ = *wcp1++; 6 } 7 8 *wc...
    Problem Text

    We think that the following source taken from test1() of wcsncpy
    has an error:

    1 for (i = 0, wcp1 = wsto, wcp2 = expws; i < wslen; i++)
    2 {
    3 if (i == 0)
    4 PATH_TRACE;
    5 *wcp2++ = *wcp1++;
    6 }
    7
    8 *wcp2 = (wchar_t) '\0';
    9
    10 num = (2 * wslen) / 3;
    11 for (i = 0, wcp1 = wsfrom, wcp2 = expws; i < num; i++)
    12 {
    13 if (i == 0)
    14 PATH_TRACE;
    15 *wcp2++ = *wcp1++;
    16 }
    17
    18 *wcp2 = (wchar_t) '\0';
    19
    20 wcsave = *(wsfrom + num);/* Shorten string for this test... */
    21 *(wsfrom + num) = (wchar_t) '\0';
    22
    23 rval = wcsncpy(wsto, wsfrom, (size_t) num);
    24 globok = 0;
    25 checkval(wsto, wsfrom, num, rval, expws, (wslen + 1));
    26 PATH_FUNC_TRACE;

    In line 18, expws[num] is set to 0 whereas location wsto[num] is undefined.
    When checkval() is called, it compares wsto[num] to be equal to expws[num]
    which do not compare because wsto[num] is undefined.

    Similarly, In line 8 above, expws[wslen] location is set to 0 whereas location
    wsto[wslen] is undefined. When checkval() is called, it compares
    wsto[wslen] to be equal to expws[wslen] which do not compare because
    wsto[wslen] is undefined.

    One way to fix the above test is to initialize wsto to 0.

    As a result of this comparison the test fails. We believe the test is at
    fault and request that a waiver be granted.

    Test Output
    XPG4.os/wstring/wcsncpy/T.wcsncpy 1 Failed
    Test Description:
    When s2 has greater than n wide characters in length, then a call to
    wcsncpy() copies n wide characters from string s2 to s1, leaves s1
    without a terminating null wide character and returns s1.

    Test Strategy:
    OBTAIN a sample string of wide characters by calling the routine
    wcharstr().
    SET the locale for LC_ALL to LOCALE1.
    VERIFY that only the number of wide-characters requested are copied
    when the string being copied is longer than the number of wide-
    characters requested.

    Test Information:
    wcsncpy did not copy data correctly
    Current language is WCL1
    Current category is LC_ALL
    expected result : 0x 2ae3 59c1 15e 303c 15f 303d 2ae3 59c1 29e 317c 3de
    32bc 15f 303d 1de 30bc 15e 303c 1de 30bc 3de 32bc
    actual result : 0x 2ae3 59c1 15e 303c 15f 303d 2ae3 59c1 29e 317c 3de
    32bc 15f 303d 1de 30bc 15e 303c 1de 30bc 3de 32bc fffffff9
    ffffffff


    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.

    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.

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