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 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 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); 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); 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 } 151 152 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