| 1 | // RUN: %clang_cc1 -fsyntax-only %s 2>&1 | FileCheck %s -strict-whitespace |
| 2 | |
| 3 | #define M1(x) x |
| 4 | #define M2 1; |
| 5 | void foo() { |
| 6 | M1( |
| 7 | M2); |
| 8 | // CHECK: {{.*}}:7:{{[0-9]+}}: warning: expression result unused |
| 9 | // CHECK: {{.*}}:4:{{[0-9]+}}: note: expanded from macro 'M2' |
| 10 | // CHECK: {{.*}}:3:{{[0-9]+}}: note: expanded from macro 'M1' |
| 11 | } |
| 12 | |
| 13 | #define A(x) x |
| 14 | #define B(x) A(x) |
| 15 | #define C(x) B(x) |
| 16 | void bar() { |
| 17 | C(1); |
| 18 | // CHECK: {{.*}}:17:5: warning: expression result unused |
| 19 | } |
| 20 | |
| 21 | // rdar://7597492 |
| 22 | #define sprintf(str, A, B) \ |
| 23 | __builtin___sprintf_chk (str, 0, 42, A, B) |
| 24 | |
| 25 | void baz(char *Msg) { |
| 26 | sprintf(Msg, " sizeof FoooLib : =%3u\n", 12LL); |
| 27 | } |
| 28 | |
| 29 | |
| 30 | // PR9279: comprehensive tests for multi-level macro back traces |
| 31 | #define macro_args1(x) x |
| 32 | #define macro_args2(x) macro_args1(x) |
| 33 | #define macro_args3(x) macro_args2(x) |
| 34 | |
| 35 | #define macro_many_args1(x, y, z) y |
| 36 | #define macro_many_args2(x, y, z) macro_many_args1(x, y, z) |
| 37 | #define macro_many_args3(x, y, z) macro_many_args2(x, y, z) |
| 38 | |
| 39 | void test() { |
| 40 | macro_args3(11); |
| 41 | // CHECK: {{.*}}:40:15: warning: expression result unused |
| 42 | // Also check that the 'caret' printing agrees with the location here where |
| 43 | // its easy to FileCheck. |
| 44 | // CHECK-NEXT: macro_args3(11); |
| 45 | // CHECK-NEXT: {{^ \^~}} |
| 46 | |
| 47 | macro_many_args3( |
| 48 | 1, |
| 49 | 2, |
| 50 | 3); |
| 51 | // CHECK: {{.*}}:49:5: warning: expression result unused |
| 52 | // CHECK: {{.*}}:37:55: note: expanded from macro 'macro_many_args3' |
| 53 | // CHECK: {{.*}}:36:55: note: expanded from macro 'macro_many_args2' |
| 54 | // CHECK: {{.*}}:35:35: note: expanded from macro 'macro_many_args1' |
| 55 | |
| 56 | macro_many_args3( |
| 57 | 1, |
| 58 | M2, |
| 59 | 3); |
| 60 | // CHECK: {{.*}}:58:5: warning: expression result unused |
| 61 | // CHECK: {{.*}}:4:12: note: expanded from macro 'M2' |
| 62 | // CHECK: {{.*}}:37:55: note: expanded from macro 'macro_many_args3' |
| 63 | // CHECK: {{.*}}:36:55: note: expanded from macro 'macro_many_args2' |
| 64 | // CHECK: {{.*}}:35:35: note: expanded from macro 'macro_many_args1' |
| 65 | |
| 66 | macro_many_args3( |
| 67 | 1, |
| 68 | macro_args2(22), |
| 69 | 3); |
| 70 | // CHECK: {{.*}}:68:17: warning: expression result unused |
| 71 | // This caret location needs to be printed *inside* a different macro's |
| 72 | // arguments. |
| 73 | // CHECK-NEXT: macro_args2(22), |
| 74 | // CHECK-NEXT: {{^ \^~}} |
| 75 | // CHECK: {{.*}}:32:36: note: expanded from macro 'macro_args2' |
| 76 | // CHECK: {{.*}}:31:24: note: expanded from macro 'macro_args1' |
| 77 | // CHECK: {{.*}}:37:55: note: expanded from macro 'macro_many_args3' |
| 78 | // CHECK: {{.*}}:36:55: note: expanded from macro 'macro_many_args2' |
| 79 | // CHECK: {{.*}}:35:35: note: expanded from macro 'macro_many_args1' |
| 80 | } |
| 81 | |
| 82 | #define variadic_args1(x, y, ...) y |
| 83 | #define variadic_args2(x, ...) variadic_args1(x, __VA_ARGS__) |
| 84 | #define variadic_args3(x, y, ...) variadic_args2(x, y, __VA_ARGS__) |
| 85 | |
| 86 | void test2() { |
| 87 | variadic_args3(1, 22, 3, 4); |
| 88 | // CHECK: {{.*}}:87:21: warning: expression result unused |
| 89 | // CHECK-NEXT: variadic_args3(1, 22, 3, 4); |
| 90 | // CHECK-NEXT: {{^ \^~}} |
| 91 | // CHECK: {{.*}}:84:53: note: expanded from macro 'variadic_args3' |
| 92 | // CHECK: {{.*}}:83:50: note: expanded from macro 'variadic_args2' |
| 93 | // CHECK: {{.*}}:82:35: note: expanded from macro 'variadic_args1' |
| 94 | } |
| 95 | |
| 96 | #define variadic_pasting_args1(x, y, z) y |
| 97 | #define variadic_pasting_args2(x, ...) variadic_pasting_args1(x ## __VA_ARGS__) |
| 98 | #define variadic_pasting_args2a(x, y, ...) variadic_pasting_args1(x, y ## __VA_ARGS__) |
| 99 | #define variadic_pasting_args3(x, y, ...) variadic_pasting_args2(x, y, __VA_ARGS__) |
| 100 | #define variadic_pasting_args3a(x, y, ...) variadic_pasting_args2a(x, y, __VA_ARGS__) |
| 101 | |
| 102 | void test3() { |
| 103 | variadic_pasting_args3(1, 2, 3, 4); |
| 104 | // CHECK: {{.*}}:103:32: warning: expression result unused |
| 105 | // CHECK: {{.*}}:99:72: note: expanded from macro 'variadic_pasting_args3' |
| 106 | // CHECK: {{.*}}:97:68: note: expanded from macro 'variadic_pasting_args2' |
| 107 | // CHECK: {{.*}}:96:41: note: expanded from macro 'variadic_pasting_args1' |
| 108 | |
| 109 | variadic_pasting_args3a(1, 2, 3, 4); |
| 110 | // CHECK: {{.*}}:109:3: warning: expression result unused |
| 111 | // CHECK-NEXT: variadic_pasting_args3a(1, 2, 3, 4); |
| 112 | // CHECK-NEXT: {{ \^~~~~~~~~~~~~~~~~~~~~~~}} |
| 113 | // CHECK: {{.*}}:100:44: note: expanded from macro 'variadic_pasting_args3a' |
| 114 | // CHECK-NEXT: #define variadic_pasting_args3a(x, y, ...) variadic_pasting_args2a(x, y, __VA_ARGS__) |
| 115 | // CHECK-NEXT: {{ \^~~~~~~~~~~~~~~~~~~~~~~}} |
| 116 | // CHECK: {{.*}}:98:70: note: expanded from macro 'variadic_pasting_args2a' |
| 117 | // CHECK-NEXT: #define variadic_pasting_args2a(x, y, ...) variadic_pasting_args1(x, y ## __VA_ARGS__) |
| 118 | // CHECK-NEXT: {{ \^~~~~~~~~~~~~~~~}} |
| 119 | // CHECK: {{.*}}:96:41: note: expanded from macro 'variadic_pasting_args1' |
| 120 | // CHECK-NEXT: #define variadic_pasting_args1(x, y, z) y |
| 121 | // CHECK-NEXT: {{ \^}} |
| 122 | } |
| 123 | |
| 124 | #define BAD_CONDITIONAL_OPERATOR (2<3)?2:3 |
| 125 | int test4 = BAD_CONDITIONAL_OPERATOR+BAD_CONDITIONAL_OPERATOR; |
| 126 | // CHECK: {{.*}}:124:39: note: expanded from macro 'BAD_CONDITIONAL_OPERATOR' |
| 127 | // CHECK-NEXT: #define BAD_CONDITIONAL_OPERATOR (2<3)?2:3 |
| 128 | // CHECK-NEXT: {{^ \^}} |
| 129 | // CHECK: {{.*}}:124:39: note: expanded from macro 'BAD_CONDITIONAL_OPERATOR' |
| 130 | // CHECK-NEXT: #define BAD_CONDITIONAL_OPERATOR (2<3)?2:3 |
| 131 | // CHECK-NEXT: {{^ \^}} |
| 132 | // CHECK: {{.*}}:124:39: note: expanded from macro 'BAD_CONDITIONAL_OPERATOR' |
| 133 | // CHECK-NEXT: #define BAD_CONDITIONAL_OPERATOR (2<3)?2:3 |
| 134 | // CHECK-NEXT: {{^ ~~~~~\^~~~}} |
| 135 | |
| 136 | #define QMARK ? |
| 137 | #define TWOL (2< |
| 138 | #define X 1+TWOL 3) QMARK 4:5 |
| 139 | int x = X; |
| 140 | // CHECK: {{.*}}:139:9: note: place parentheses around the '+' expression to silence this warning |
| 141 | // CHECK-NEXT: int x = X; |
| 142 | // CHECK-NEXT: {{^ \^}} |
| 143 | // CHECK-NEXT: {{.*}}:138:21: note: expanded from macro 'X' |
| 144 | // CHECK-NEXT: #define X 1+TWOL 3) QMARK 4:5 |
| 145 | // CHECK-NEXT: {{^ ~~~~~~~~~ \^}} |
| 146 | // CHECK-NEXT: {{.*}}:136:15: note: expanded from macro 'QMARK' |
| 147 | // CHECK-NEXT: #define QMARK ? |
| 148 | // CHECK-NEXT: {{^ \^}} |
| 149 | // CHECK-NEXT: {{.*}}:139:9: note: place parentheses around the '?:' expression to evaluate it first |
| 150 | // CHECK-NEXT: int x = X; |
| 151 | // CHECK-NEXT: {{^ \^}} |
| 152 | // CHECK-NEXT: {{.*}}:138:21: note: expanded from macro 'X' |
| 153 | // CHECK-NEXT: #define X 1+TWOL 3) QMARK 4:5 |
| 154 | // CHECK-NEXT: {{^ ~~~~~~~~\^~~~~~~~~}} |
| 155 | |
| 156 | #define ONEPLUS 1+ |
| 157 | #define Y ONEPLUS (2<3) QMARK 4:5 |
| 158 | int y = Y; |
| 159 | // CHECK: {{.*}}:158:9: warning: operator '?:' has lower precedence than '+'; '+' will be evaluated first |
| 160 | // CHECK-NEXT: int y = Y; |
| 161 | // CHECK-NEXT: {{^ \^}} |
| 162 | // CHECK-NEXT: {{.*}}:157:25: note: expanded from macro 'Y' |
| 163 | // CHECK-NEXT: #define Y ONEPLUS (2<3) QMARK 4:5 |
| 164 | // CHECK-NEXT: {{^ ~~~~~~~~~~~~~ \^}} |
| 165 | // CHECK-NEXT: {{.*}}:136:15: note: expanded from macro 'QMARK' |
| 166 | // CHECK-NEXT: #define QMARK ? |
| 167 | // CHECK-NEXT: {{^ \^}} |
| 168 | |
| 169 | // PR14399 |
| 170 | void iequals(int,int,int); |
| 171 | void foo_aa(char* s) |
| 172 | { |
| 173 | #define /* */ BARC(c, /* */b, a) (a + b ? c : c) |
| 174 | iequals(__LINE__, BARC(123, (456 < 345), 789), 8); |
| 175 | } |
| 176 | // CHECK: {{.*}}:174:21: warning: operator '?:' has lower precedence than '+' |
| 177 | // CHECK-NEXT: iequals(__LINE__, BARC(123, (456 < 345), 789), 8); |
| 178 | // CHECK-NEXT: {{^ \^~~~~~~~~~~~~~~~~~~~~~~~~~~}} |
| 179 | // CHECK-NEXT: {{.*}}:173:41: note: expanded from macro 'BARC' |
| 180 | // CHECK-NEXT: #define /* */ BARC(c, /* */b, a) (a + b ? c : c) |
| 181 | // CHECK-NEXT: {{^ ~~~~~ \^}} |
| 182 | |
| 183 | #define APPEND2(NUM, SUFF) -1 != NUM ## SUFF |
| 184 | #define APPEND(NUM, SUFF) APPEND2(NUM, SUFF) |
| 185 | #define UTARG_MAX_U APPEND (MAX_UINT, UL) |
| 186 | #define MAX_UINT 18446744073709551615 |
| 187 | #if UTARG_MAX_U |
| 188 | #endif |
| 189 | |
| 190 | // CHECK: {{.*}}:187:5: warning: left side of operator converted from negative value to unsigned: -1 to 18446744073709551615 |
| 191 | // CHECK-NEXT: #if UTARG_MAX_U |
| 192 | // CHECK-NEXT: {{^ \^~~~~~~~~~~}} |
| 193 | // CHECK-NEXT: {{.*}}:185:21: note: expanded from macro 'UTARG_MAX_U' |
| 194 | // CHECK-NEXT: #define UTARG_MAX_U APPEND (MAX_UINT, UL) |
| 195 | // CHECK-NEXT: {{^ \^~~~~~~~~~~~~~~~~~~~~}} |
| 196 | // CHECK-NEXT: {{.*}}:184:27: note: expanded from macro 'APPEND' |
| 197 | // CHECK-NEXT: #define APPEND(NUM, SUFF) APPEND2(NUM, SUFF) |
| 198 | // CHECK-NEXT: {{^ \^~~~~~~~~~~~~~~~~~}} |
| 199 | // CHECK-NEXT: {{.*}}:183:31: note: expanded from macro 'APPEND2' |
| 200 | // CHECK-NEXT: #define APPEND2(NUM, SUFF) -1 != NUM ## SUFF |
| 201 | // CHECK-NEXT: {{^ ~~ \^ ~~~~~~~~~~~}} |
| 202 | |
| 203 | unsigned long strlen_test(const char *s); |
| 204 | #define __darwin_obsz(object) __builtin_object_size (object, 1) |
| 205 | #define sprintf2(str, ...) \ |
| 206 | __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__) |
| 207 | #define Cstrlen(a) strlen_test(a) |
| 208 | #define Csprintf sprintf2 |
| 209 | void f(char* pMsgBuf, char* pKeepBuf) { |
| 210 | Csprintf(pMsgBuf,"\nEnter minimum anagram length (2-%1d): ", strlen_test(pKeepBuf)); |
| 211 | // FIXME: Change test to use 'Cstrlen' instead of 'strlen_test' when macro printing is fixed. |
| 212 | } |
| 213 | // CHECK: {{.*}}:210:62: warning: format specifies type 'int' but the argument has type 'unsigned long' |
| 214 | // CHECK-NEXT: Csprintf(pMsgBuf,"\nEnter minimum anagram length (2-%1d): ", strlen_test(pKeepBuf)); |
| 215 | // CHECK-NEXT: {{^ ~~~ \^~~~~~~~~~~~~~~~~~~~~}} |
| 216 | // CHECK-NEXT: {{^ %1lu}} |
| 217 | // CHECK-NEXT: {{.*}}:208:21: note: expanded from macro 'Csprintf' |
| 218 | // CHECK-NEXT: #define Csprintf sprintf2 |
| 219 | // CHECK-NEXT: {{^ \^}} |
| 220 | // CHECK-NEXT: {{.*}}:206:56: note: expanded from macro 'sprintf2' |
| 221 | // CHECK-NEXT: __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__) |
| 222 | // CHECK-NEXT: {{^ \^~~~~~~~~~~}} |
| 223 | |
| 224 | #define SWAP_AND_APPLY(arg, macro) macro arg |
| 225 | #define APPLY(macro, arg) macro arg |
| 226 | #define DECLARE_HELPER() __builtin_printf("%d\n", mylong); |
| 227 | void use_evil_macros(long mylong) { |
| 228 | SWAP_AND_APPLY((), DECLARE_HELPER) |
| 229 | APPLY(DECLARE_HELPER, ()) |
| 230 | } |
| 231 | // CHECK: {{.*}}:228:22: warning: format specifies type 'int' but the argument has type 'long' |
| 232 | // CHECK-NEXT: SWAP_AND_APPLY((), DECLARE_HELPER) |
| 233 | // CHECK-NEXT: ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~ |
| 234 | // CHECK-NEXT: {{.*}}:224:36: note: expanded from macro 'SWAP_AND_APPLY' |
| 235 | // CHECK-NEXT: #define SWAP_AND_APPLY(arg, macro) macro arg |
| 236 | // CHECK-NEXT: ^~~~~~~~~ |
| 237 | // CHECK-NEXT: {{.*}}:226:51: note: expanded from macro 'DECLARE_HELPER' |
| 238 | // CHECK-NEXT: #define DECLARE_HELPER() __builtin_printf("%d\n", mylong); |
| 239 | // CHECK-NEXT: ~~ ^~~~~~ |
| 240 | // CHECK-NEXT: {{.*}}:229:9: warning: format specifies type 'int' but the argument has type 'long' |
| 241 | // CHECK-NEXT: APPLY(DECLARE_HELPER, ()) |
| 242 | // CHECK-NEXT: ~~~~~~^~~~~~~~~~~~~~~~~~~ |
| 243 | // CHECK-NEXT: {{.*}}:225:27: note: expanded from macro 'APPLY' |
| 244 | // CHECK-NEXT: #define APPLY(macro, arg) macro arg |
| 245 | // CHECK-NEXT: ^~~~~~~~~ |
| 246 | // CHECK-NEXT: {{.*}}:226:51: note: expanded from macro 'DECLARE_HELPER' |
| 247 | // CHECK-NEXT: #define DECLARE_HELPER() __builtin_printf("%d\n", mylong); |
| 248 | // CHECK-NEXT: ~~ ^~~~~~ |
| 249 | |