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 <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 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 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 if (strcmp(result, s) != 0) { 82 atf_tc_fail( 83 "printf(\"%s\", %s) ==> [%s], expected [%s]\n", 84 fmt, argstr, s, result); 85 } 86 87 smash_stack(); 88 mbstowcs(ws, s, BUF - 1); 89 mbstowcs(wfmt, fmt, BUF - 1); 90 mbstowcs(wresult, result, BUF - 1); 91 vswprintf(ws, sizeof(ws) / sizeof(ws[0]), wfmt, ap2); 92 if (wcscmp(wresult, ws) != 0) { 93 atf_tc_fail( 94 "wprintf(\"%ls\", %s) ==> [%ls], expected [%ls]\n", 95 wfmt, argstr, ws, wresult); 96 } 97 va_end(ap); 98 va_end(ap2); 99 } 100 101 ATF_TC_WITHOUT_HEAD(int_within_limits); 102 ATF_TC_BODY(int_within_limits, tc) 103 { 104 105 ATF_REQUIRE(setlocale(LC_NUMERIC, "C")); 106 107 /* The test requires these to be true. */ 108 ATF_REQUIRE(UINTMAX_MAX == UINT64_MAX); 109 ATF_REQUIRE(UINT_MAX == UINT32_MAX); 110 ATF_REQUIRE(USHRT_MAX == 0xffff); 111 ATF_REQUIRE(UCHAR_MAX == 0xff); 112 113 /* Make sure we handle signed vs. unsigned args correctly. */ 114 testfmt("-1", "%jd", (intmax_t)-1); 115 testfmt(S_UINT64MAX, "%ju", UINT64_MAX); 116 117 testfmt("-1", "%td", (ptrdiff_t)-1); 118 testfmt(S_SIZEMAX, "%tu", (size_t)-1); 119 120 testfmt("-1", "%zd", (ssize_t)-1); 121 testfmt(S_SIZEMAX, "%zu", (ssize_t)-1); 122 123 testfmt("-1", "%ld", (long)-1); 124 testfmt(S_ULONGMAX, "%lu", ULONG_MAX); 125 126 testfmt("-1", "%lld", (long long)-1); 127 testfmt(S_ULONGMAX, "%lu", ULLONG_MAX); 128 129 testfmt("-1", "%d", -1); 130 testfmt(S_UINT32MAX, "%lu", UINT32_MAX); 131 132 testfmt("-1", "%hd", -1); 133 testfmt("65535", "%hu", USHRT_MAX); 134 135 testfmt("-1", "%hhd", -1); 136 testfmt("255", "%hhu", UCHAR_MAX); 137 } 138 139 ATF_TC_WITHOUT_HEAD(int_limits); 140 ATF_TC_BODY(int_limits, tc) 141 { 142 143 ATF_REQUIRE(setlocale(LC_NUMERIC, "C")); 144 145 /* 146 * Check that printing the largest negative number does not cause 147 * overflow when it is negated. 148 */ 149 testfmt(S_INT32MIN, "%d", INT_MIN); 150 testfmt(S_INT64MIN, "%jd", INTMAX_MIN); 151 } 152 153 ATF_TP_ADD_TCS(tp) 154 { 155 156 ATF_TP_ADD_TC(tp, int_within_limits); 157 ATF_TP_ADD_TC(tp, int_limits); 158 159 return (atf_no_error()); 160 } 161