1#include <array_length.h>
2#include <errno.h>
3#include <stdio.h>
4#include <support/check.h>
5#include <sys/types.h>
6#include <wchar.h>
7
8
9static wchar_t buf[100];
10static const struct
11{
12 size_t n;
13 const char *str;
14 ssize_t exp;
15} tests[] =
16 {
17 { array_length (buf), "hello world", 11 },
18 { 0, "hello world", -1 },
19 { 1, "hello world", -1 },
20 { 2, "hello world", -1 },
21 { 11, "hello world", -1 },
22 { 12, "hello world", 11 },
23 { 0, "", -1 },
24 { array_length (buf), "", 0 }
25 };
26
27static int
28do_test (void)
29{
30 size_t n;
31
32 TEST_COMPARE (swprintf (buf, array_length (buf), L"Hello %s", "world"), 11);
33 TEST_COMPARE_STRING_WIDE (buf, L"Hello world");
34
35 TEST_COMPARE (swprintf (buf, array_length (buf), L"Is this >%g< 3.1?", 3.1),
36 18);
37 TEST_COMPARE_STRING_WIDE (buf, L"Is this >3.1< 3.1?");
38
39 for (n = 0; n < array_length (tests); ++n)
40 {
41 wmemset (buf, 0xabcd, array_length (buf));
42 errno = 0;
43 ssize_t res = swprintf (s: buf, n: tests[n].n, format: L"%s", tests[n].str);
44
45 if (tests[n].exp < 0 && res >= 0)
46 {
47 support_record_failure ();
48 printf (format: "swprintf (buf, %zu, L\"%%s\", \"%s\") expected to fail\n",
49 tests[n].n, tests[n].str);
50 }
51 else if (tests[n].exp >= 0 && tests[n].exp != res)
52 {
53 support_record_failure ();
54 printf (format: "\
55swprintf (buf, %zu, L\"%%s\", \"%s\") expected to return %zd, but got %zd\n",
56 tests[n].n, tests[n].str, tests[n].exp, res);
57 }
58 else if (res < 0
59 && tests[n].n > 0
60 && wcsnlen (s: buf, array_length (buf)) == array_length (buf))
61 {
62 support_record_failure ();
63 printf (format: "\
64error: swprintf (buf, %zu, L\"%%s\", \"%s\") missing null terminator\n",
65 tests[n].n, tests[n].str);
66 }
67 else if (res < 0
68 && tests[n].n > 0
69 && wcsnlen (s: buf, array_length (buf)) < array_length (buf)
70 && buf[wcsnlen (s: buf, array_length (buf)) + 1] != 0xabcd)
71 {
72 support_record_failure ();
73 printf (format: "\
74error: swprintf (buf, %zu, L\"%%s\", \"%s\") out of bounds write\n",
75 tests[n].n, tests[n].str);
76 }
77
78 if (res < 0 && tests[n].n < 0)
79 TEST_COMPARE (errno, E2BIG);
80
81 printf (format: "swprintf (buf, %zu, L\"%%s\", \"%s\") OK\n",
82 tests[n].n, tests[n].str);
83 }
84
85 TEST_COMPARE (swprintf (buf, array_length (buf), L"%.0s", "foo"), 0);
86 TEST_COMPARE_STRING_WIDE (buf, L"");
87
88 TEST_COMPARE (swprintf (buf, array_length (buf), L"%.0ls", L"foo"), 0);
89 TEST_COMPARE_STRING_WIDE (buf, L"");
90
91 return 0;
92}
93
94#include <support/test-driver.c>
95

source code of glibc/libio/tst_swprintf.c