Jordan Rose | 6ebea89 | 2012-09-05 17:11:26 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -analyze -analyzer-checker=core,alpha.core,debug.ExprInspection -verify -x c %s |
| 2 | // RUN: %clang_cc1 -analyze -analyzer-checker=core,alpha.core,debug.ExprInspection -verify -x c++ -analyzer-config c++-inlining=constructors %s |
Jordan Rose | f1e67d7 | 2012-10-17 19:35:37 +0000 | [diff] [blame] | 3 | // RUN: %clang_cc1 -analyze -analyzer-checker=core,alpha.core,debug.ExprInspection -DINLINE -verify -x c %s |
| 4 | // RUN: %clang_cc1 -analyze -analyzer-checker=core,alpha.core,debug.ExprInspection -DINLINE -verify -x c++ -analyzer-config c++-inlining=constructors %s |
Jordan Rose | 6ebea89 | 2012-09-05 17:11:26 +0000 | [diff] [blame] | 5 | |
| 6 | void clang_analyzer_eval(int); |
| 7 | |
| 8 | struct S { |
| 9 | int field; |
| 10 | |
| 11 | #if __cplusplus |
| 12 | const struct S *getThis() const { return this; } |
Jordan Rose | f1e67d7 | 2012-10-17 19:35:37 +0000 | [diff] [blame] | 13 | const struct S *operator +() const { return this; } |
| 14 | |
| 15 | bool check() const { return this == this; } |
| 16 | bool operator !() const { return this != this; } |
| 17 | |
| 18 | int operator *() const { return field; } |
Jordan Rose | 6ebea89 | 2012-09-05 17:11:26 +0000 | [diff] [blame] | 19 | #endif |
| 20 | }; |
| 21 | |
Jordan Rose | f1e67d7 | 2012-10-17 19:35:37 +0000 | [diff] [blame] | 22 | #if __cplusplus |
| 23 | const struct S *operator -(const struct S &s) { return &s; } |
Jordan Rose | 9a7a568 | 2013-11-08 01:15:39 +0000 | [diff] [blame] | 24 | bool operator ~(const struct S &s) { return (&s) != &s; } |
Jordan Rose | f1e67d7 | 2012-10-17 19:35:37 +0000 | [diff] [blame] | 25 | #endif |
| 26 | |
| 27 | |
| 28 | #ifdef INLINE |
| 29 | struct S getS() { |
| 30 | struct S s = { 42 }; |
| 31 | return s; |
| 32 | } |
| 33 | #else |
Jordan Rose | 6ebea89 | 2012-09-05 17:11:26 +0000 | [diff] [blame] | 34 | struct S getS(); |
Jordan Rose | f1e67d7 | 2012-10-17 19:35:37 +0000 | [diff] [blame] | 35 | #endif |
Jordan Rose | 6ebea89 | 2012-09-05 17:11:26 +0000 | [diff] [blame] | 36 | |
| 37 | |
| 38 | void testAssignment() { |
| 39 | struct S s = getS(); |
| 40 | |
| 41 | if (s.field != 42) return; |
| 42 | clang_analyzer_eval(s.field == 42); // expected-warning{{TRUE}} |
| 43 | |
| 44 | s.field = 0; |
| 45 | clang_analyzer_eval(s.field == 0); // expected-warning{{TRUE}} |
| 46 | |
| 47 | #if __cplusplus |
| 48 | clang_analyzer_eval(s.getThis() == &s); // expected-warning{{TRUE}} |
Jordan Rose | f1e67d7 | 2012-10-17 19:35:37 +0000 | [diff] [blame] | 49 | clang_analyzer_eval(+s == &s); // expected-warning{{TRUE}} |
| 50 | clang_analyzer_eval(-s == &s); // expected-warning{{TRUE}} |
| 51 | |
| 52 | clang_analyzer_eval(s.check()); // expected-warning{{TRUE}} |
| 53 | clang_analyzer_eval(!s); // expected-warning{{FALSE}} |
| 54 | clang_analyzer_eval(~s); // expected-warning{{FALSE}} |
| 55 | |
| 56 | clang_analyzer_eval(*s == 0); // expected-warning{{TRUE}} |
Jordan Rose | 6ebea89 | 2012-09-05 17:11:26 +0000 | [diff] [blame] | 57 | #endif |
| 58 | } |
| 59 | |
| 60 | |
| 61 | void testImmediateUse() { |
| 62 | int x = getS().field; |
| 63 | |
| 64 | if (x != 42) return; |
| 65 | clang_analyzer_eval(x == 42); // expected-warning{{TRUE}} |
| 66 | |
| 67 | #if __cplusplus |
| 68 | clang_analyzer_eval((void *)getS().getThis() == (void *)&x); // expected-warning{{FALSE}} |
Jordan Rose | f1e67d7 | 2012-10-17 19:35:37 +0000 | [diff] [blame] | 69 | clang_analyzer_eval((void *)+getS() == (void *)&x); // expected-warning{{FALSE}} |
| 70 | clang_analyzer_eval((void *)-getS() == (void *)&x); // expected-warning{{FALSE}} |
| 71 | |
| 72 | clang_analyzer_eval(getS().check()); // expected-warning{{TRUE}} |
| 73 | clang_analyzer_eval(!getS()); // expected-warning{{FALSE}} |
| 74 | clang_analyzer_eval(~getS()); // expected-warning{{FALSE}} |
Jordan Rose | 6ebea89 | 2012-09-05 17:11:26 +0000 | [diff] [blame] | 75 | #endif |
| 76 | } |
| 77 | |
| 78 | int getConstrainedField(struct S s) { |
| 79 | if (s.field != 42) return 42; |
| 80 | return s.field; |
| 81 | } |
| 82 | |
| 83 | int getAssignedField(struct S s) { |
| 84 | s.field = 42; |
| 85 | return s.field; |
| 86 | } |
| 87 | |
| 88 | void testArgument() { |
| 89 | clang_analyzer_eval(getConstrainedField(getS()) == 42); // expected-warning{{TRUE}} |
Jordan Rose | 6ebea89 | 2012-09-05 17:11:26 +0000 | [diff] [blame] | 90 | clang_analyzer_eval(getAssignedField(getS()) == 42); // expected-warning{{TRUE}} |
| 91 | } |
| 92 | |
Jordan Rose | d4ce811 | 2012-10-17 19:35:44 +0000 | [diff] [blame] | 93 | void testImmediateUseParens() { |
| 94 | int x = ((getS())).field; |
| 95 | |
| 96 | if (x != 42) return; |
| 97 | clang_analyzer_eval(x == 42); // expected-warning{{TRUE}} |
| 98 | |
| 99 | clang_analyzer_eval(getConstrainedField(((getS()))) == 42); // expected-warning{{TRUE}} |
| 100 | clang_analyzer_eval(getAssignedField(((getS()))) == 42); // expected-warning{{TRUE}} |
| 101 | |
| 102 | #if __cplusplus |
| 103 | clang_analyzer_eval(((getS())).check()); // expected-warning{{TRUE}} |
| 104 | clang_analyzer_eval(!((getS()))); // expected-warning{{FALSE}} |
| 105 | clang_analyzer_eval(~((getS()))); // expected-warning{{FALSE}} |
| 106 | #endif |
| 107 | } |
| 108 | |
Jordan Rose | 6ebea89 | 2012-09-05 17:11:26 +0000 | [diff] [blame] | 109 | |
| 110 | //-------------------- |
| 111 | // C++-only tests |
| 112 | //-------------------- |
| 113 | |
| 114 | #if __cplusplus |
| 115 | void testReferenceAssignment() { |
| 116 | const S &s = getS(); |
| 117 | |
| 118 | if (s.field != 42) return; |
| 119 | clang_analyzer_eval(s.field == 42); // expected-warning{{TRUE}} |
| 120 | |
| 121 | clang_analyzer_eval(s.getThis() == &s); // expected-warning{{TRUE}} |
Jordan Rose | f1e67d7 | 2012-10-17 19:35:37 +0000 | [diff] [blame] | 122 | clang_analyzer_eval(+s == &s); // expected-warning{{TRUE}} |
| 123 | |
| 124 | clang_analyzer_eval(s.check()); // expected-warning{{TRUE}} |
| 125 | clang_analyzer_eval(!s); // expected-warning{{FALSE}} |
| 126 | clang_analyzer_eval(~s); // expected-warning{{FALSE}} |
| 127 | |
| 128 | clang_analyzer_eval(*s == 42); // expected-warning{{TRUE}} |
Jordan Rose | 6ebea89 | 2012-09-05 17:11:26 +0000 | [diff] [blame] | 129 | } |
| 130 | |
| 131 | |
| 132 | int getConstrainedFieldRef(const S &s) { |
| 133 | if (s.field != 42) return 42; |
| 134 | return s.field; |
| 135 | } |
| 136 | |
| 137 | bool checkThis(const S &s) { |
| 138 | return s.getThis() == &s; |
| 139 | } |
| 140 | |
Jordan Rose | f1e67d7 | 2012-10-17 19:35:37 +0000 | [diff] [blame] | 141 | bool checkThisOp(const S &s) { |
| 142 | return +s == &s; |
| 143 | } |
| 144 | |
| 145 | bool checkThisStaticOp(const S &s) { |
| 146 | return -s == &s; |
| 147 | } |
| 148 | |
Jordan Rose | 6ebea89 | 2012-09-05 17:11:26 +0000 | [diff] [blame] | 149 | void testReferenceArgument() { |
| 150 | clang_analyzer_eval(getConstrainedFieldRef(getS()) == 42); // expected-warning{{TRUE}} |
| 151 | clang_analyzer_eval(checkThis(getS())); // expected-warning{{TRUE}} |
Jordan Rose | f1e67d7 | 2012-10-17 19:35:37 +0000 | [diff] [blame] | 152 | clang_analyzer_eval(checkThisOp(getS())); // expected-warning{{TRUE}} |
| 153 | clang_analyzer_eval(checkThisStaticOp(getS())); // expected-warning{{TRUE}} |
Jordan Rose | 6ebea89 | 2012-09-05 17:11:26 +0000 | [diff] [blame] | 154 | } |
Jordan Rose | f1e67d7 | 2012-10-17 19:35:37 +0000 | [diff] [blame] | 155 | |
| 156 | |
| 157 | int getConstrainedFieldOp(S s) { |
| 158 | if (*s != 42) return 42; |
| 159 | return *s; |
| 160 | } |
| 161 | |
| 162 | int getConstrainedFieldRefOp(const S &s) { |
| 163 | if (*s != 42) return 42; |
| 164 | return *s; |
| 165 | } |
| 166 | |
| 167 | void testImmediateUseOp() { |
| 168 | int x = *getS(); |
| 169 | if (x != 42) return; |
| 170 | clang_analyzer_eval(x == 42); // expected-warning{{TRUE}} |
| 171 | |
| 172 | clang_analyzer_eval(getConstrainedFieldOp(getS()) == 42); // expected-warning{{TRUE}} |
| 173 | clang_analyzer_eval(getConstrainedFieldRefOp(getS()) == 42); // expected-warning{{TRUE}} |
| 174 | } |
| 175 | |
Pavel Labath | 3c114f7 | 2013-08-29 16:06:04 +0000 | [diff] [blame] | 176 | namespace EmptyClass { |
| 177 | struct Base { |
| 178 | int& x; |
| 179 | |
| 180 | Base(int& x) : x(x) {} |
| 181 | }; |
| 182 | |
| 183 | struct Derived : public Base { |
| 184 | Derived(int& x) : Base(x) {} |
| 185 | |
| 186 | void operator=(int a) { x = a; } |
| 187 | }; |
| 188 | |
| 189 | Derived ref(int& a) { return Derived(a); } |
| 190 | |
| 191 | // There used to be a warning here, because analyzer treated Derived as empty. |
| 192 | int test() { |
| 193 | int a; |
| 194 | ref(a) = 42; |
| 195 | return a; // no warning |
| 196 | } |
| 197 | } |
| 198 | |
Jordan Rose | 6ebea89 | 2012-09-05 17:11:26 +0000 | [diff] [blame] | 199 | #endif |