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Problem Report 2548 Details

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Report 2548 Actions

    Problem Report Number 2548
    Submitter's Classification Test Suite problem
    State Resolved
    Resolution Test Suite Deficiency (TSD)
    Problem Resolution ID TSD.X.1317
    Raised 2009-08-17 22:40
    Updated 2009-08-18 14:16
    Published 2009-08-18 14:16
    Product Standard Internationalised System Calls and Libraries Extended V3 (UNIX 03)
    Certification Program The Open Brand certification program
    Test Suite VSTH version 5.4.9
    Test Identification PTHR.os/cfuncs/putchar_unlocked 2
    Specification Base Definitions Issue 6
    Linked Problem Reports 2545
    Problem Summary Array overrun in /tset/PTHR.os/cfuncs/putchar_unlocked/T.putchar_unlocked
    Problem Text During the course of debugging the above error, it was discovered that
    the output of
    putc_unlocked was being written to file descriptor zero (stdout) instead
    of the intended pipe.
    When the tests execute putchar_unlocked_exectests, the write-end of the
    pipe should be
    passed as the ninth command line argument, but instead the empty string
    ("") is passed.
    This empty string is interpreted by putchar_unlocked_exectests as zero,
    resulting in the
    output going to standard output.

    From vsth/tset/PTHR.os/cfuncs/putchar_unlocked/putchar_unlocked.c:
    1. void
    2. t2_c1()
    3. {
    4. char *argv[4];
    5. char ascii_fd0[20];
    6. char ascii_fd1[20];
    7.
    8. argv[0] = execpath(TE_PATH);
    9. argv[1] = "1";
    10. argv[2] = strcpy(ascii_fd0, itoa(T2_fd[0]));
    11. argv[3] = strcpy(ascii_fd1, itoa(T2_fd[1]));
    12. argv[4] = NULL;
    13.
    14. (void) tet_exec(execpath(TE_PATH), argv, environ);
    15.
    16. exit(1);
    17. }

    Note that 'argv' is declared as an array of four elements (line 4), but
    five elements are written
    to it (line 12). On the Intel architecture, with GNU C compiler 4.2.1,
    this results in an empty
    string instead of the contents of ascii_fd1.
    Test Output /tset/PTHR.os/cfuncs/Mputchar_unlocked/T.putchar_unlocked 2
    Unresolved

    Test Description:
    If the _POSIX_THREAD_SAFE_FUNCTIONS option is supported:
    when stdio does not support positioning requests or stdio was
    opened in append mode, then a call to putchar_unlocked(c) appends
    the character specified by c, converted to an unsigned char, to
    stdio and returns c if successful.
    Posix Ref: Component PUTCHAR_UNLOCKED Assertion 9945-1:1996 8.2.7.2,
    ANSI/ISO 9899-1990 7.9.7.9-2(C)

    Test Information:
    read unexpectedly failed, expected 65, got -1

    Review Information

    Review Type TSMA Review
    Start Date 2009-08-17 22:40
    Last Updated 2009-08-17 23:47
    Completed 2009-08-17 23:47
    Status Complete
    Review Recommendation Test Suite Deficiency (TSD)
    Review Response This is the same problem as reported in PR2545, but for
    putchar_unlocked() instead of putc_unlocked().

    Review Type SA Review
    Start Date 2009-08-17 22:47
    Last Updated 2009-08-18 14:15
    Completed 2009-08-18 14:15
    Status Complete
    Review Resolution Test Suite Deficiency (TSD)
    Review Conclusion A test suite deficiency is granted.

    Problem Reporting System Options:

     

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