| 1 | // RUN: %clang_cc1 -fsyntax-only -Wlogical-not-parentheses -verify %s |
| 2 | // RUN: not %clang_cc1 -fsyntax-only -Wlogical-not-parentheses -fdiagnostics-parseable-fixits %s 2>&1 | FileCheck %s |
| 3 | |
| 4 | bool getBool(); |
| 5 | int getInt(); |
| 6 | |
| 7 | bool test1(int i1, int i2, bool b1, bool b2) { |
| 8 | bool ret; |
| 9 | |
| 10 | ret = !i1 == i2; |
| 11 | // expected-warning@-1 {{logical not is only applied to the left hand side of this comparison}} |
| 12 | // expected-note@-2 {{add parentheses after the '!' to evaluate the comparison first}} |
| 13 | // expected-note@-3 {{add parentheses around left hand side expression to silence this warning}} |
| 14 | // CHECK: warn-logical-not-compare.cpp:[[line:[0-9]*]]:9: warning |
| 15 | // CHECK: to evaluate the comparison first |
| 16 | // CHECK: fix-it:"{{.*}}":{[[line]]:10-[[line]]:10}:"(" |
| 17 | // CHECK: fix-it:"{{.*}}":{[[line]]:18-[[line]]:18}:")" |
| 18 | // CHECK: to silence this warning |
| 19 | // CHECK: fix-it:"{{.*}}":{[[line]]:9-[[line]]:9}:"(" |
| 20 | // CHECK: fix-it:"{{.*}}":{[[line]]:12-[[line]]:12}:")" |
| 21 | |
| 22 | ret = !i1 != i2; |
| 23 | //expected-warning@-1 {{logical not is only applied to the left hand side of this comparison}} |
| 24 | // expected-note@-2 {{add parentheses after the '!' to evaluate the comparison first}} |
| 25 | // expected-note@-3 {{add parentheses around left hand side expression to silence this warning}} |
| 26 | // CHECK: warn-logical-not-compare.cpp:[[line:[0-9]*]]:9: warning |
| 27 | // CHECK: to evaluate the comparison first |
| 28 | // CHECK: fix-it:"{{.*}}":{[[line]]:10-[[line]]:10}:"(" |
| 29 | // CHECK: fix-it:"{{.*}}":{[[line]]:18-[[line]]:18}:")" |
| 30 | // CHECK: to silence this warning |
| 31 | // CHECK: fix-it:"{{.*}}":{[[line]]:9-[[line]]:9}:"(" |
| 32 | // CHECK: fix-it:"{{.*}}":{[[line]]:12-[[line]]:12}:")" |
| 33 | |
| 34 | ret = !i1 < i2; |
| 35 | //expected-warning@-1 {{logical not is only applied to the left hand side of this comparison}} |
| 36 | // expected-note@-2 {{add parentheses after the '!' to evaluate the comparison first}} |
| 37 | // expected-note@-3 {{add parentheses around left hand side expression to silence this warning}} |
| 38 | // CHECK: warn-logical-not-compare.cpp:[[line:[0-9]*]]:9: warning |
| 39 | // CHECK: to evaluate the comparison first |
| 40 | // CHECK: fix-it:"{{.*}}":{[[line]]:10-[[line]]:10}:"(" |
| 41 | // CHECK: fix-it:"{{.*}}":{[[line]]:17-[[line]]:17}:")" |
| 42 | // CHECK: to silence this warning |
| 43 | // CHECK: fix-it:"{{.*}}":{[[line]]:9-[[line]]:9}:"(" |
| 44 | // CHECK: fix-it:"{{.*}}":{[[line]]:12-[[line]]:12}:")" |
| 45 | |
| 46 | ret = !i1 > i2; |
| 47 | //expected-warning@-1 {{logical not is only applied to the left hand side of this comparison}} |
| 48 | // expected-note@-2 {{add parentheses after the '!' to evaluate the comparison first}} |
| 49 | // expected-note@-3 {{add parentheses around left hand side expression to silence this warning}} |
| 50 | // CHECK: warn-logical-not-compare.cpp:[[line:[0-9]*]]:9: warning |
| 51 | // CHECK: to evaluate the comparison first |
| 52 | // CHECK: fix-it:"{{.*}}":{[[line]]:10-[[line]]:10}:"(" |
| 53 | // CHECK: fix-it:"{{.*}}":{[[line]]:17-[[line]]:17}:")" |
| 54 | // CHECK: to silence this warning |
| 55 | // CHECK: fix-it:"{{.*}}":{[[line]]:9-[[line]]:9}:"(" |
| 56 | // CHECK: fix-it:"{{.*}}":{[[line]]:12-[[line]]:12}:")" |
| 57 | |
| 58 | ret = !i1 <= i2; |
| 59 | //expected-warning@-1 {{logical not is only applied to the left hand side of this comparison}} |
| 60 | // expected-note@-2 {{add parentheses after the '!' to evaluate the comparison first}} |
| 61 | // expected-note@-3 {{add parentheses around left hand side expression to silence this warning}} |
| 62 | // CHECK: warn-logical-not-compare.cpp:[[line:[0-9]*]]:9: warning |
| 63 | // CHECK: to evaluate the comparison first |
| 64 | // CHECK: fix-it:"{{.*}}":{[[line]]:10-[[line]]:10}:"(" |
| 65 | // CHECK: fix-it:"{{.*}}":{[[line]]:18-[[line]]:18}:")" |
| 66 | // CHECK: to silence this warning |
| 67 | // CHECK: fix-it:"{{.*}}":{[[line]]:9-[[line]]:9}:"(" |
| 68 | // CHECK: fix-it:"{{.*}}":{[[line]]:12-[[line]]:12}:")" |
| 69 | |
| 70 | ret = !i1 >= i2; |
| 71 | //expected-warning@-1 {{logical not is only applied to the left hand side of this comparison}} |
| 72 | // expected-note@-2 {{add parentheses after the '!' to evaluate the comparison first}} |
| 73 | // expected-note@-3 {{add parentheses around left hand side expression to silence this warning}} |
| 74 | // CHECK: warn-logical-not-compare.cpp:[[line:[0-9]*]]:9: warning |
| 75 | // CHECK: to evaluate the comparison first |
| 76 | // CHECK: fix-it:"{{.*}}":{[[line]]:10-[[line]]:10}:"(" |
| 77 | // CHECK: fix-it:"{{.*}}":{[[line]]:18-[[line]]:18}:")" |
| 78 | // CHECK: to silence this warning |
| 79 | // CHECK: fix-it:"{{.*}}":{[[line]]:9-[[line]]:9}:"(" |
| 80 | // CHECK: fix-it:"{{.*}}":{[[line]]:12-[[line]]:12}:")" |
| 81 | |
| 82 | ret = i1 == i2; |
| 83 | ret = i1 != i2; |
| 84 | ret = i1 < i2; |
| 85 | ret = i1 > i2; |
| 86 | ret = i1 <= i2; |
| 87 | ret = i1 >= i2; |
| 88 | |
| 89 | // Warning silenced by parens. |
| 90 | ret = (!i1) == i2; |
| 91 | ret = (!i1) != i2; |
| 92 | ret = (!i1) < i2; |
| 93 | ret = (!i1) > i2; |
| 94 | ret = (!i1) <= i2; |
| 95 | ret = (!i1) >= i2; |
| 96 | |
| 97 | ret = !b1 == b2; |
| 98 | ret = !b1 != b2; |
| 99 | ret = !b1 < b2; |
| 100 | ret = !b1 > b2; |
| 101 | ret = !b1 <= b2; |
| 102 | ret = !b1 >= b2; |
| 103 | |
| 104 | ret = !getInt() == i1; |
| 105 | // expected-warning@-1 {{logical not is only applied to the left hand side of this comparison}} |
| 106 | // expected-note@-2 {{add parentheses after the '!' to evaluate the comparison first}} |
| 107 | // expected-note@-3 {{add parentheses around left hand side expression to silence this warning}} |
| 108 | // CHECK: warn-logical-not-compare.cpp:[[line:[0-9]*]]:9: warning |
| 109 | // CHECK: to evaluate the comparison first |
| 110 | // CHECK: fix-it:"{{.*}}":{[[line]]:10-[[line]]:10}:"(" |
| 111 | // CHECK: fix-it:"{{.*}}":{[[line]]:24-[[line]]:24}:")" |
| 112 | // CHECK: to silence this warning |
| 113 | // CHECK: fix-it:"{{.*}}":{[[line]]:9-[[line]]:9}:"(" |
| 114 | // CHECK: fix-it:"{{.*}}":{[[line]]:18-[[line]]:18}:")" |
| 115 | |
| 116 | ret = (!getInt()) == i1; |
| 117 | ret = !getBool() == b1; |
| 118 | return ret; |
| 119 | } |
| 120 | |
| 121 | enum E {e1, e2}; |
| 122 | E getE(); |
| 123 | |
| 124 | bool test2 (E e) { |
| 125 | bool ret; |
| 126 | ret = e == e1; |
| 127 | ret = e == getE(); |
| 128 | ret = getE() == e1; |
| 129 | ret = getE() == getE(); |
| 130 | |
| 131 | ret = !e == e1; |
| 132 | // expected-warning@-1 {{logical not is only applied to the left hand side of this comparison}} |
| 133 | // expected-note@-2 {{add parentheses after the '!' to evaluate the comparison first}} |
| 134 | // expected-note@-3 {{add parentheses around left hand side expression to silence this warning}} |
| 135 | // CHECK: warn-logical-not-compare.cpp:[[line:[0-9]*]]:9: warning |
| 136 | // CHECK: to evaluate the comparison first |
| 137 | // CHECK: fix-it:"{{.*}}":{[[line]]:10-[[line]]:10}:"(" |
| 138 | // CHECK: fix-it:"{{.*}}":{[[line]]:17-[[line]]:17}:")" |
| 139 | // CHECK: to silence this warning |
| 140 | // CHECK: fix-it:"{{.*}}":{[[line]]:9-[[line]]:9}:"(" |
| 141 | // CHECK: fix-it:"{{.*}}":{[[line]]:11-[[line]]:11}:")" |
| 142 | |
| 143 | ret = !e == getE(); |
| 144 | // expected-warning@-1 {{logical not is only applied to the left hand side of this comparison}} |
| 145 | // expected-note@-2 {{add parentheses after the '!' to evaluate the comparison first}} |
| 146 | // expected-note@-3 {{add parentheses around left hand side expression to silence this warning}} |
| 147 | // CHECK: warn-logical-not-compare.cpp:[[line:[0-9]*]]:9: warning |
| 148 | // CHECK: to evaluate the comparison first |
| 149 | // CHECK: fix-it:"{{.*}}":{[[line]]:10-[[line]]:10}:"(" |
| 150 | // CHECK: fix-it:"{{.*}}":{[[line]]:21-[[line]]:21}:")" |
| 151 | // CHECK: to silence this warning |
| 152 | // CHECK: fix-it:"{{.*}}":{[[line]]:9-[[line]]:9}:"(" |
| 153 | // CHECK: fix-it:"{{.*}}":{[[line]]:11-[[line]]:11}:")" |
| 154 | |
| 155 | ret = !getE() == e1; |
| 156 | // expected-warning@-1 {{logical not is only applied to the left hand side of this comparison}} |
| 157 | // expected-note@-2 {{add parentheses after the '!' to evaluate the comparison first}} |
| 158 | // expected-note@-3 {{add parentheses around left hand side expression to silence this warning}} |
| 159 | // CHECK: warn-logical-not-compare.cpp:[[line:[0-9]*]]:9: warning |
| 160 | // CHECK: to evaluate the comparison first |
| 161 | // CHECK: fix-it:"{{.*}}":{[[line]]:10-[[line]]:10}:"(" |
| 162 | // CHECK: fix-it:"{{.*}}":{[[line]]:22-[[line]]:22}:")" |
| 163 | // CHECK: to silence this warning |
| 164 | // CHECK: fix-it:"{{.*}}":{[[line]]:9-[[line]]:9}:"(" |
| 165 | // CHECK: fix-it:"{{.*}}":{[[line]]:16-[[line]]:16}:")" |
| 166 | |
| 167 | ret = !getE() == getE(); |
| 168 | // expected-warning@-1 {{logical not is only applied to the left hand side of this comparison}} |
| 169 | // expected-note@-2 {{add parentheses after the '!' to evaluate the comparison first}} |
| 170 | // expected-note@-3 {{add parentheses around left hand side expression to silence this warning}} |
| 171 | // CHECK: warn-logical-not-compare.cpp:[[line:[0-9]*]]:9: warning |
| 172 | // CHECK: to evaluate the comparison first |
| 173 | // CHECK: fix-it:"{{.*}}":{[[line]]:10-[[line]]:10}:"(" |
| 174 | // CHECK: fix-it:"{{.*}}":{[[line]]:26-[[line]]:26}:")" |
| 175 | // CHECK: to silence this warning |
| 176 | // CHECK: fix-it:"{{.*}}":{[[line]]:9-[[line]]:9}:"(" |
| 177 | // CHECK: fix-it:"{{.*}}":{[[line]]:16-[[line]]:16}:")" |
| 178 | |
| 179 | ret = !(e == e1); |
| 180 | ret = !(e == getE()); |
| 181 | ret = !(getE() == e1); |
| 182 | ret = !(getE() == getE()); |
| 183 | |
| 184 | ret = (!e) == e1; |
| 185 | ret = (!e) == getE(); |
| 186 | ret = (!getE()) == e1; |
| 187 | ret = (!getE()) == getE(); |
| 188 | |
| 189 | return ret; |
| 190 | } |
| 191 | |
| 192 | bool test_bitwise_op(int x) { |
| 193 | bool ret; |
| 194 | |
| 195 | ret = !x & 1; |
| 196 | // expected-warning@-1 {{logical not is only applied to the left hand side of this bitwise operator}} |
| 197 | // expected-note@-2 {{add parentheses after the '!' to evaluate the bitwise operator first}} |
| 198 | // expected-note@-3 {{add parentheses around left hand side expression to silence this warning}} |
| 199 | // CHECK: warn-logical-not-compare.cpp:[[line:[0-9]*]]:9: warning |
| 200 | // CHECK: to evaluate the bitwise operator first |
| 201 | // CHECK: fix-it:"{{.*}}":{[[line]]:10-[[line]]:10}:"(" |
| 202 | // CHECK: fix-it:"{{.*}}":{[[line]]:15-[[line]]:15}:")" |
| 203 | // CHECK: to silence this warning |
| 204 | // CHECK: fix-it:"{{.*}}":{[[line]]:9-[[line]]:9}:"(" |
| 205 | // CHECK: fix-it:"{{.*}}":{[[line]]:11-[[line]]:11}:")" |
| 206 | ret = !(x & 1); |
| 207 | ret = (!x) & 1; |
| 208 | |
| 209 | // This warning is really about !x & FOO since that's a common misspelling |
| 210 | // of the negated bit test !(x & FOO). Don't warn for | and ^, since |
| 211 | // it's at least conceivable that the user wants to use | as an |
| 212 | // alternative to || that evaluates both branches. (The warning above is |
| 213 | // only emitted if the operand to ! is not a bool, but in C that's common.) |
| 214 | // And there's no logical ^. |
| 215 | ret = !x | 1; |
| 216 | ret = !(x | 1); |
| 217 | ret = (!x) | 1; |
| 218 | |
| 219 | ret = !x ^ 1; |
| 220 | ret = !(x ^ 1); |
| 221 | ret = (!x) ^ 1; |
| 222 | |
| 223 | // These already err, don't also warn. |
| 224 | !x &= 1; // expected-error{{expression is not assignable}} |
| 225 | !x |= 1; // expected-error{{expression is not assignable}} |
| 226 | !x ^= 1; // expected-error{{expression is not assignable}} |
| 227 | |
| 228 | return ret; |
| 229 | } |
| 230 | |
| 231 | bool PR16673(int x) { |
| 232 | bool ret; |
| 233 | // Make sure we don't emit a fixit for the left paren, but not the right paren. |
| 234 | #define X(x) x |
| 235 | ret = X(!x == 1 && 1); |
| 236 | // expected-warning@-1 {{logical not is only applied to the left hand side of this comparison}} |
| 237 | // expected-note@-2 {{add parentheses after the '!' to evaluate the comparison first}} |
| 238 | // expected-note@-3 {{add parentheses around left hand side expression to silence this warning}} |
| 239 | // CHECK: warn-logical-not-compare.cpp:[[line:[0-9]*]]:11: warning |
| 240 | // CHECK: to evaluate the comparison first |
| 241 | // CHECK-NOT: fix-it |
| 242 | // CHECK: to silence this warning |
| 243 | // CHECK-NOT: fix-it |
| 244 | return ret; |
| 245 | } |
| 246 | |