1/* BZ 11041 */
2#include <getopt.h>
3#include <unistd.h>
4#include <stdio.h>
5#include <stdlib.h>
6
7static const struct option opts[] =
8 {
9 { "alpha", optional_argument, NULL, 'a' },
10 { NULL, 0, NULL, 0 }
11 };
12
13static int
14one_test (const char *fmt, int argc, char *argv[], int n, int expected[n])
15{
16 optind = 1;
17
18 int res = 0;
19 for (int i = 0; i < n; ++i)
20 {
21 rewind (stderr);
22 if (ftruncate (fd: fileno (stderr), length: 0) != 0)
23 {
24 puts (s: "cannot truncate file");
25 return 1;
26 }
27
28 int c = getopt_long (argc: argc, argv: argv, shortopts: fmt, longopts: opts, NULL);
29 if (c != expected[i])
30 {
31 printf (format: "%s: format '%s' test %d failed: expected '%c', got '%c'\n",
32 argv[0], fmt, i, expected[i], c);
33 res = 1;
34 }
35 else if (optarg != NULL)
36 {
37 printf (format: "%s: format '%s' test %d failed: optarg is \"%s\", not NULL\n",
38 argv[0], fmt, i, optarg);
39 res = 1;
40 }
41 if (ftell (stderr) != 0)
42 {
43 printf (format: "%s: format '%s' test %d failed: printed to stderr\n",
44 argv[0], fmt, i);
45 res = 1;
46 }
47 }
48
49 return res;
50}
51
52
53static int
54do_test (void)
55{
56 char fname[] = "/tmp/bug-getopt4.XXXXXX";
57 int fd = mkstemp (template: fname);
58 if (fd == -1)
59 {
60 printf (format: "mkstemp failed: %m\n");
61 return 1;
62 }
63 close (fd: fd);
64
65 if (freopen (filename: fname, modes: "w+", stderr) == NULL)
66 {
67 puts (s: "cannot redirect stderr");
68 return 1;
69 }
70
71 remove (fname);
72
73 int ret = one_test (fmt: "W;", argc: 2,
74 argv: (char *[2]) { (char *) "bug-getopt4a", (char *) "--a" },
75 n: 1, expected: (int [1]) { 'a' });
76
77 ret |= one_test (fmt: "W;", argc: 3,
78 argv: (char *[3]) { (char *) "bug-getopt4b", (char *) "-W",
79 (char *) "a" },
80 n: 1, expected: (int [1]) { 'a' });
81
82 if (ret == 0)
83 puts (s: "all OK");
84
85 return ret;
86}
87
88#define TEST_FUNCTION do_test ()
89#include "../test-skeleton.c"
90

source code of glibc/posix/bug-getopt4.c