t_printf.c revision 272458
1/* $NetBSD: t_printf.c,v 1.8 2012/04/11 16:21:42 jruoho Exp $ */
2
3/*-
4 * Copyright (c) 2010 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include <sys/types.h>
30#include <sys/resource.h>
31#include <atf-c.h>
32#include <math.h>
33#include <stdio.h>
34#include <stdint.h>
35#include <string.h>
36#include <time.h>
37#include <stdlib.h>
38
39ATF_TC(snprintf_c99);
40ATF_TC_HEAD(snprintf_c99, tc)
41{
42
43	atf_tc_set_md_var(tc, "descr",
44	    "Test printf(3) C99 conformance (PR lib/22019)");
45}
46
47ATF_TC_BODY(snprintf_c99, tc)
48{
49	char s[4];
50
51	(void)memset(s, '\0', sizeof(s));
52	(void)snprintf(s, sizeof(s), "%#.o", 0);
53	(void)printf("printf = %#.o\n", 0);
54	(void)fprintf(stderr, "snprintf = %s", s);
55
56	ATF_REQUIRE(strlen(s) == 1);
57	ATF_REQUIRE(s[0] == '0');
58}
59
60ATF_TC(snprintf_dotzero);
61ATF_TC_HEAD(snprintf_dotzero, tc)
62{
63
64	atf_tc_set_md_var(tc, "descr",
65	    "PR lib/32951: %%.0f formats (0.0,0.5] to \"0.\"");
66}
67
68ATF_TC_BODY(snprintf_dotzero, tc)
69{
70	char s[4];
71
72	ATF_CHECK(snprintf(s, sizeof(s), "%.0f", 0.1) == 1);
73	ATF_REQUIRE_STREQ(s, "0");
74}
75
76ATF_TC(snprintf_posarg);
77ATF_TC_HEAD(snprintf_posarg, tc)
78{
79
80	atf_tc_set_md_var(tc, "descr", "test for positional arguments");
81}
82
83ATF_TC_BODY(snprintf_posarg, tc)
84{
85	char s[16];
86
87	ATF_CHECK(snprintf(s, sizeof(s), "%1$d", -23) == 3);
88	ATF_REQUIRE_STREQ(s, "-23");
89}
90
91ATF_TC(snprintf_posarg_width);
92ATF_TC_HEAD(snprintf_posarg_width, tc)
93{
94
95	atf_tc_set_md_var(tc, "descr", "test for positional arguments with "
96	    "field width");
97}
98
99ATF_TC_BODY(snprintf_posarg_width, tc)
100{
101	char s[16];
102
103	ATF_CHECK(snprintf(s, sizeof(s), "%1$*2$d", -23, 4) == 4);
104	ATF_REQUIRE_STREQ(s, " -23");
105}
106
107ATF_TC(snprintf_posarg_error);
108ATF_TC_HEAD(snprintf_posarg_error, tc)
109{
110
111	atf_tc_set_md_var(tc, "descr", "test for positional arguments out "
112	    "of bounds");
113}
114
115ATF_TC_BODY(snprintf_posarg_error, tc)
116{
117	char s[16], fmt[32];
118
119	snprintf(fmt, sizeof(fmt), "%%%zu$d", SIZE_MAX / sizeof(size_t));
120
121	ATF_CHECK(snprintf(s, sizeof(s), fmt, -23) == -1);
122}
123
124ATF_TC(snprintf_float);
125ATF_TC_HEAD(snprintf_float, tc)
126{
127
128	atf_tc_set_md_var(tc, "descr", "test that floating conversions don't"
129	    " leak memory");
130}
131
132ATF_TC_BODY(snprintf_float, tc)
133{
134	union {
135		double d;
136		uint64_t bits;
137	} u;
138	uint32_t ul, uh;
139	time_t now;
140	char buf[1000];
141	struct rlimit rl;
142
143	rl.rlim_cur = rl.rlim_max = 1 * 1024 * 1024;
144	ATF_CHECK(setrlimit(RLIMIT_AS, &rl) != -1);
145	rl.rlim_cur = rl.rlim_max = 1 * 1024 * 1024;
146	ATF_CHECK(setrlimit(RLIMIT_DATA, &rl) != -1);
147
148	time(&now);
149	srand(now);
150	for (size_t i = 0; i < 10000; i++) {
151		ul = rand();
152		uh = rand();
153		u.bits = (uint64_t)uh << 32 | ul;
154		ATF_CHECK(snprintf(buf, sizeof buf, " %.2f", u.d) != -1);
155	}
156}
157
158ATF_TC(sprintf_zeropad);
159ATF_TC_HEAD(sprintf_zeropad, tc)
160{
161	atf_tc_set_md_var(tc, "descr",
162	    "Test output format zero padding (PR lib/44113)");
163}
164
165ATF_TC_BODY(sprintf_zeropad, tc)
166{
167	char str[1024];
168
169	ATF_CHECK(sprintf(str, "%010f", 0.0) == 10);
170	ATF_REQUIRE_STREQ(str, "000.000000");
171
172	/* ieeefp */
173#ifndef __vax__
174	/* printf(3) should ignore zero padding for nan/inf */
175	ATF_CHECK(sprintf(str, "%010f", NAN) == 10);
176	ATF_REQUIRE_STREQ(str, "       nan");
177	ATF_CHECK(sprintf(str, "%010f", INFINITY) == 10);
178	ATF_REQUIRE_STREQ(str, "       inf");
179#endif
180}
181
182ATF_TP_ADD_TCS(tp)
183{
184
185	ATF_TP_ADD_TC(tp, snprintf_c99);
186	ATF_TP_ADD_TC(tp, snprintf_dotzero);
187	ATF_TP_ADD_TC(tp, snprintf_posarg);
188	ATF_TP_ADD_TC(tp, snprintf_posarg_width);
189	ATF_TP_ADD_TC(tp, snprintf_posarg_error);
190	ATF_TP_ADD_TC(tp, snprintf_float);
191	ATF_TP_ADD_TC(tp, sprintf_zeropad);
192
193	return atf_no_error();
194}
195