probe syscall.open {
      actualLength = strlen (filename);

      if (actualLength > 5 && actualLength < 15 && filename != "<unknown>") {
        four = 4;
        five = 5;
        fifteen = 15;
	success = 1;

	expected_1_1 = sprintf ("%.1s", filename);
        testName = "%m default width and precision";
        result = sprintf ("%m", $filename);
	if (result != expected_1_1) {
		printf ("Test %s failed\n", testName);
		success = 0;
	}

	expected_5_5 = sprintf ("%.5s", filename);
        testName = "%m static precision smaller than input";
        result = sprintf ("%.5m", $filename);
	if (result != expected_5_5) {
		printf ("Test %s failed\n", testName);
		success = 0;
	}

        testName = "%m dynamic precision smaller than input";
        result = sprintf ("%.*m", five, $filename);
	if (result != expected_5_5) {
		printf ("Test %s failed\n", testName);
		success = 0;
	}

        testName = "%m dynamic precision equal to input";
	expected_actual_actual = filename;
        result = sprintf ("%.*m", actualLength, $filename);
	if (result != expected_actual_actual) {
		printf ("Test %s failed\n", testName);
		success = 0;
	}

	expected_5_1 = sprintf ("    %.1s", filename);
        testName = "%m static width default precision";
        result = sprintf ("%5m", $filename);
	if (result != expected_5_1) {
		printf ("Test %s failed\n", testName);
		success = 0;
	}

        testName = "%m dynamic width default precision";
        result = sprintf ("%*m", five, $filename);
	if (result != expected_5_1) {
		printf ("Test %s failed\n", testName);
		success = 0;
	}

	expected_4_5 = expected_5_5;
        testName = "%m static width smaller than static precision";
        result = sprintf ("%4.5m", $filename);
	if (result != expected_4_5) {
		printf ("Test %s failed\n", testName);
		success = 0;
	}

	expected_15_5 = sprintf ("          %.5s", filename);
        testName = "%m static width larger than static precision";
        result = sprintf ("%15.5m", $filename);
	if (result != expected_15_5) {
		printf ("Test %s failed\n", testName);
		success = 0;
	}

        testName = "%m dynamic width smaller than static precision";
        result = sprintf ("%*.5m", four, $filename);
	if (result != expected_4_5) {
		printf ("Test %s failed\n", testName);
		success = 0;
	}

        testName = "%m dynamic width larger than static precision";
        result = sprintf ("%*.5m", fifteen, $filename);
	if (result != expected_15_5) {
		printf ("Test %s failed\n", testName);
		success = 0;
	}

	expected_4_actual = expected_actual_actual;
        testName = "%m static width smaller than dynamic precision";
        result = sprintf ("%4.*m", actualLength, $filename);
	if (result != expected_4_actual) {
		printf ("Test %s failed\n", testName);
		success = 0;
	}

	expected_15_actual = sprintf ("%15s", filename);
        testName = "%m static width larger than dynamic precision";
        result = sprintf ("%15.*m", actualLength, $filename);
	if (result != expected_15_actual) {
		printf ("Test %s failed\n", testName);
		success = 0;
	}

        testName = "%m dynamic width smaller than dynamic precision";
        result = sprintf ("%*.*m", four, actualLength, $filename);
	if (result != expected_4_actual) {
		printf ("Test %s failed\n", testName);
		success = 0;
	}

        testName = "%m dynamic width larger than dynamic precision";
        result = sprintf ("%*.*m", fifteen, actualLength, $filename);
	if (result != expected_15_actual) {
		printf ("Test %s failed\n", testName);
		success = 0;
	}

	expected_16_actual = sprintf ("  %02x%02x%02x%02x%02x%02x",
				      stringat(filename, 0),
				      stringat(filename, 1),
				      stringat(filename, 2),
				      stringat(filename, 3),
				      stringat(filename, 4),
				      stringat(filename, 5));
	testName = "%M dynamic width larger than dynamic precision";
	result = sprintf ("%*.*M", 14, 6, $filename);
	if (result != expected_16_actual) {
		printf ("Test %s failed\n", testName);
		success = 0;
	}

	if (success)
	   print ("Test passed\n");

        exit();
    }
}