1 /*-
2 * Copyright (c) 2009 David Schultz <das@FreeBSD.org>
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 <err.h>
32 #include <limits.h>
33 #include <locale.h>
34 #include <stdio.h>
35 #include <stdarg.h>
36 #include <stddef.h>
37 #include <stdint.h>
38 #include <stdlib.h>
39 #include <string.h>
40 #include <wchar.h>
41
42 #include <atf-c.h>
43
44 #define S_UINT64MAX "18446744073709551615"
45 #define S_UINT32MAX "4294967295"
46 #define S_INT64MIN "-9223372036854775808"
47 #define S_INT32MIN "-2147483648"
48
49 #define S_SIZEMAX (SIZE_MAX == UINT64_MAX ? S_UINT64MAX : S_UINT32MAX)
50 #define S_ULONGMAX (ULONG_MAX == UINT64_MAX ? S_UINT64MAX : S_UINT32MAX)
51 #define S_ULLONGMAX (ULLONG_MAX == UINT64_MAX ? S_UINT64MAX : S_UINT32MAX)
52
53 static void
smash_stack(void)54 smash_stack(void)
55 {
56 static uint32_t junk = 0xdeadbeef;
57 uint32_t buf[512];
58 int i;
59
60 for (i = 0; i < sizeof(buf) / sizeof(buf[0]); i++)
61 buf[i] = junk;
62 }
63
64 #define testfmt(result, fmt, ...) \
65 _testfmt((result), #__VA_ARGS__, fmt, __VA_ARGS__)
66 static void
_testfmt(const char * result,const char * argstr,const char * fmt,...)67 _testfmt(const char *result, const char *argstr, const char *fmt,...)
68 {
69 #define BUF 100
70 wchar_t ws[BUF], wfmt[BUF], wresult[BUF];
71 char s[BUF];
72 va_list ap, ap2;
73
74 va_start(ap, fmt);
75 va_copy(ap2, ap);
76 smash_stack();
77 vsnprintf(s, sizeof(s), fmt, ap);
78 ATF_CHECK_MSG(strcmp(result, s) == 0,
79 "printf(\"%s\", %s) ==> [%s], expected [%s]",
80 fmt, argstr, s, result);
81
82 smash_stack();
83 mbstowcs(ws, s, BUF - 1);
84 mbstowcs(wfmt, fmt, BUF - 1);
85 mbstowcs(wresult, result, BUF - 1);
86 vswprintf(ws, sizeof(ws) / sizeof(ws[0]), wfmt, ap2);
87 ATF_CHECK_MSG(wcscmp(wresult, ws) == 0,
88 "wprintf(\"%ls\", %s) ==> [%ls], expected [%ls]",
89 wfmt, argstr, ws, wresult);
90
91 va_end(ap);
92 va_end(ap2);
93 }
94
95 ATF_TC_WITHOUT_HEAD(int_within_limits);
ATF_TC_BODY(int_within_limits,tc)96 ATF_TC_BODY(int_within_limits, tc)
97 {
98
99 ATF_REQUIRE(setlocale(LC_NUMERIC, "C"));
100
101 /* The test requires these to be true. */
102 ATF_REQUIRE(UINTMAX_MAX == UINT64_MAX);
103 ATF_REQUIRE(UINT_MAX == UINT32_MAX);
104 ATF_REQUIRE(USHRT_MAX == 0xffff);
105 ATF_REQUIRE(UCHAR_MAX == 0xff);
106
107 /* Make sure we handle signed vs. unsigned args correctly. */
108 testfmt("-1", "%jd", (intmax_t)-1);
109 testfmt(S_UINT64MAX, "%ju", UINT64_MAX);
110
111 if (sizeof(ptrdiff_t) != sizeof(uintmax_t))
112 atf_tc_expect_fail("the %%t qualifier is broken on 32-bit "
113 "platforms where there's a mismatch between ptrdiff_t and "
114 "uintmax_t's type width; bug # 191674");
115
116 testfmt("-1", "%td", (ptrdiff_t)-1);
117 testfmt(S_SIZEMAX, "%tu", (size_t)-1);
118
119 testfmt("-1", "%zd", (ssize_t)-1);
120 testfmt(S_SIZEMAX, "%zu", (ssize_t)-1);
121
122 testfmt("-1", "%ld", (long)-1);
123 testfmt(S_ULONGMAX, "%lu", ULONG_MAX);
124
125 testfmt("-1", "%lld", (long long)-1);
126 testfmt(S_ULLONGMAX, "%llu", ULLONG_MAX);
127
128 testfmt("-1", "%d", -1);
129 testfmt(S_UINT32MAX, "%u", UINT32_MAX);
130
131 testfmt("-1", "%hd", -1);
132 testfmt("65535", "%hu", USHRT_MAX);
133
134 testfmt("-1", "%hhd", -1);
135 testfmt("255", "%hhu", UCHAR_MAX);
136 }
137
138 ATF_TC_WITHOUT_HEAD(int_limits);
ATF_TC_BODY(int_limits,tc)139 ATF_TC_BODY(int_limits, tc)
140 {
141
142 ATF_REQUIRE(setlocale(LC_NUMERIC, "C"));
143
144 /*
145 * Check that printing the largest negative number does not cause
146 * overflow when it is negated.
147 */
148 testfmt(S_INT32MIN, "%d", INT_MIN);
149 testfmt(S_INT64MIN, "%jd", INTMAX_MIN);
150 }
151
ATF_TP_ADD_TCS(tp)152 ATF_TP_ADD_TCS(tp)
153 {
154
155 ATF_TP_ADD_TC(tp, int_within_limits);
156 ATF_TP_ADD_TC(tp, int_limits);
157
158 return (atf_no_error());
159 }
160