1 /*-
2 * Copyright (c) 2009 David Schultz <[email protected]>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 /*
28 * Tests for basic and miscellaneous printf() formats.
29 */
30
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
33
34 #include <err.h>
35 #include <limits.h>
36 #include <locale.h>
37 #include <stdio.h>
38 #include <stdarg.h>
39 #include <stddef.h>
40 #include <stdint.h>
41 #include <stdlib.h>
42 #include <string.h>
43 #include <wchar.h>
44
45 #include <atf-c.h>
46
47 #define S_UINT64MAX "18446744073709551615"
48 #define S_UINT32MAX "4294967295"
49 #define S_INT64MIN "-9223372036854775808"
50 #define S_INT32MIN "-2147483648"
51
52 #define S_SIZEMAX (SIZE_MAX == UINT64_MAX ? S_UINT64MAX : S_UINT32MAX)
53 #define S_ULONGMAX (ULONG_MAX == UINT64_MAX ? S_UINT64MAX : S_UINT32MAX)
54 #define S_ULLONGMAX (ULLONG_MAX == UINT64_MAX ? S_UINT64MAX : S_UINT32MAX)
55
56 static void
smash_stack(void)57 smash_stack(void)
58 {
59 static uint32_t junk = 0xdeadbeef;
60 uint32_t buf[512];
61 int i;
62
63 for (i = 0; i < sizeof(buf) / sizeof(buf[0]); i++)
64 buf[i] = junk;
65 }
66
67 #define testfmt(result, fmt, ...) \
68 _testfmt((result), #__VA_ARGS__, fmt, __VA_ARGS__)
69 static void
_testfmt(const char * result,const char * argstr,const char * fmt,...)70 _testfmt(const char *result, const char *argstr, const char *fmt,...)
71 {
72 #define BUF 100
73 wchar_t ws[BUF], wfmt[BUF], wresult[BUF];
74 char s[BUF];
75 va_list ap, ap2;
76
77 va_start(ap, fmt);
78 va_copy(ap2, ap);
79 smash_stack();
80 vsnprintf(s, sizeof(s), fmt, ap);
81 ATF_CHECK_MSG(strcmp(result, s) == 0,
82 "printf(\"%s\", %s) ==> [%s], expected [%s]",
83 fmt, argstr, s, result);
84
85 smash_stack();
86 mbstowcs(ws, s, BUF - 1);
87 mbstowcs(wfmt, fmt, BUF - 1);
88 mbstowcs(wresult, result, BUF - 1);
89 vswprintf(ws, sizeof(ws) / sizeof(ws[0]), wfmt, ap2);
90 ATF_CHECK_MSG(wcscmp(wresult, ws) == 0,
91 "wprintf(\"%ls\", %s) ==> [%ls], expected [%ls]",
92 wfmt, argstr, ws, wresult);
93
94 va_end(ap);
95 va_end(ap2);
96 }
97
98 ATF_TC_WITHOUT_HEAD(int_within_limits);
ATF_TC_BODY(int_within_limits,tc)99 ATF_TC_BODY(int_within_limits, tc)
100 {
101
102 ATF_REQUIRE(setlocale(LC_NUMERIC, "C"));
103
104 /* The test requires these to be true. */
105 ATF_REQUIRE(UINTMAX_MAX == UINT64_MAX);
106 ATF_REQUIRE(UINT_MAX == UINT32_MAX);
107 ATF_REQUIRE(USHRT_MAX == 0xffff);
108 ATF_REQUIRE(UCHAR_MAX == 0xff);
109
110 /* Make sure we handle signed vs. unsigned args correctly. */
111 testfmt("-1", "%jd", (intmax_t)-1);
112 testfmt(S_UINT64MAX, "%ju", UINT64_MAX);
113
114 if (sizeof(ptrdiff_t) != sizeof(uintmax_t))
115 atf_tc_expect_fail("the %%t qualifier is broken on 32-bit "
116 "platforms where there's a mismatch between ptrdiff_t and "
117 "uintmax_t's type width; bug # 191674");
118
119 testfmt("-1", "%td", (ptrdiff_t)-1);
120 testfmt(S_SIZEMAX, "%tu", (size_t)-1);
121
122 testfmt("-1", "%zd", (ssize_t)-1);
123 testfmt(S_SIZEMAX, "%zu", (ssize_t)-1);
124
125 testfmt("-1", "%ld", (long)-1);
126 testfmt(S_ULONGMAX, "%lu", ULONG_MAX);
127
128 testfmt("-1", "%lld", (long long)-1);
129 testfmt(S_ULLONGMAX, "%llu", ULLONG_MAX);
130
131 testfmt("-1", "%d", -1);
132 testfmt(S_UINT32MAX, "%u", UINT32_MAX);
133
134 testfmt("-1", "%hd", -1);
135 testfmt("65535", "%hu", USHRT_MAX);
136
137 testfmt("-1", "%hhd", -1);
138 testfmt("255", "%hhu", UCHAR_MAX);
139 }
140
141 ATF_TC_WITHOUT_HEAD(int_limits);
ATF_TC_BODY(int_limits,tc)142 ATF_TC_BODY(int_limits, tc)
143 {
144
145 ATF_REQUIRE(setlocale(LC_NUMERIC, "C"));
146
147 /*
148 * Check that printing the largest negative number does not cause
149 * overflow when it is negated.
150 */
151 testfmt(S_INT32MIN, "%d", INT_MIN);
152 testfmt(S_INT64MIN, "%jd", INTMAX_MIN);
153 }
154
ATF_TP_ADD_TCS(tp)155 ATF_TP_ADD_TCS(tp)
156 {
157
158 ATF_TP_ADD_TC(tp, int_within_limits);
159 ATF_TP_ADD_TC(tp, int_limits);
160
161 return (atf_no_error());
162 }
163