Pavel Labath | 66ea35d | 2013-08-30 08:52:28 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -std=c++11 -analyze -analyzer-checker=core,alpha.core,debug.ExprInspection -verify %s |
Jordan Rose | fdaa338 | 2012-07-03 22:55:57 +0000 | [diff] [blame] | 2 | void clang_analyzer_eval(bool); |
| 3 | |
Douglas Gregor | 90d26a4 | 2010-11-01 23:16:05 +0000 | [diff] [blame] | 4 | struct X0 { }; |
| 5 | bool operator==(const X0&, const X0&); |
| 6 | |
| 7 | // PR7287 |
| 8 | struct test { int a[2]; }; |
| 9 | |
| 10 | void t2() { |
| 11 | test p = {{1,2}}; |
| 12 | test q; |
| 13 | q = p; |
| 14 | } |
| 15 | |
| 16 | bool PR7287(X0 a, X0 b) { |
Douglas Gregor | 73a48ad | 2010-11-01 23:33:11 +0000 | [diff] [blame] | 17 | return operator==(a, b); |
Douglas Gregor | 90d26a4 | 2010-11-01 23:16:05 +0000 | [diff] [blame] | 18 | } |
Jordan Rose | fdaa338 | 2012-07-03 22:55:57 +0000 | [diff] [blame] | 19 | |
| 20 | |
| 21 | // Inlining non-static member operators mistakenly treated 'this' as the first |
| 22 | // argument for a while. |
| 23 | |
| 24 | struct IntComparable { |
| 25 | bool operator==(int x) const { |
| 26 | return x == 0; |
| 27 | } |
| 28 | }; |
| 29 | |
| 30 | void testMemberOperator(IntComparable B) { |
Jordan Rose | e54cfc7 | 2012-07-10 22:07:57 +0000 | [diff] [blame] | 31 | clang_analyzer_eval(B == 0); // expected-warning{{TRUE}} |
Jordan Rose | fdaa338 | 2012-07-03 22:55:57 +0000 | [diff] [blame] | 32 | } |
Jordan Rose | c386d8f | 2012-08-23 23:01:39 +0000 | [diff] [blame] | 33 | |
| 34 | |
| 35 | |
| 36 | namespace UserDefinedConversions { |
| 37 | class Convertible { |
| 38 | public: |
| 39 | operator int() const { |
| 40 | return 42; |
| 41 | } |
| 42 | operator bool() const { |
| 43 | return true; |
| 44 | } |
| 45 | }; |
| 46 | |
| 47 | void test(const Convertible &obj) { |
| 48 | clang_analyzer_eval((int)obj == 42); // expected-warning{{TRUE}} |
| 49 | clang_analyzer_eval(obj); // expected-warning{{TRUE}} |
| 50 | } |
| 51 | } |
Jordan Rose | 476f41c | 2013-04-18 16:33:40 +0000 | [diff] [blame] | 52 | |
| 53 | |
| 54 | namespace RValues { |
| 55 | struct SmallOpaque { |
| 56 | float x; |
| 57 | int operator +() const { |
| 58 | return (int)x; |
| 59 | } |
| 60 | }; |
| 61 | |
| 62 | struct LargeOpaque { |
| 63 | float x[4]; |
| 64 | int operator +() const { |
| 65 | return (int)x[0]; |
| 66 | } |
| 67 | }; |
| 68 | |
| 69 | SmallOpaque getSmallOpaque() { |
| 70 | SmallOpaque obj; |
| 71 | obj.x = 1.0; |
| 72 | return obj; |
| 73 | } |
| 74 | |
| 75 | LargeOpaque getLargeOpaque() { |
| 76 | LargeOpaque obj = LargeOpaque(); |
| 77 | obj.x[0] = 1.0; |
| 78 | return obj; |
| 79 | } |
| 80 | |
| 81 | void test(int coin) { |
| 82 | // Force a cache-out when we try to conjure a temporary region for the operator call. |
| 83 | // ...then, don't crash. |
| 84 | clang_analyzer_eval(+(coin ? getSmallOpaque() : getSmallOpaque())); // expected-warning{{UNKNOWN}} |
| 85 | clang_analyzer_eval(+(coin ? getLargeOpaque() : getLargeOpaque())); // expected-warning{{UNKNOWN}} |
| 86 | } |
| 87 | } |
Pavel Labath | 66ea35d | 2013-08-30 08:52:28 +0000 | [diff] [blame] | 88 | |
| 89 | namespace SynthesizedAssignment { |
| 90 | struct A { |
| 91 | int a; |
| 92 | A& operator=(A& other) { a = -other.a; return *this; } |
| 93 | A& operator=(A&& other) { a = other.a+1; return *this; } |
| 94 | }; |
| 95 | |
| 96 | struct B { |
| 97 | int x; |
| 98 | A a[3]; |
| 99 | B& operator=(B&) = default; |
| 100 | B& operator=(B&&) = default; |
| 101 | }; |
| 102 | |
| 103 | // This used to produce a warning about the iteration variable in the |
| 104 | // synthesized assignment operator being undefined. |
| 105 | void testNoWarning() { |
| 106 | B v, u; |
| 107 | u = v; |
| 108 | } |
| 109 | |
| 110 | void testNoWarningMove() { |
| 111 | B v, u; |
| 112 | u = static_cast<B &&>(v); |
| 113 | } |
| 114 | |
| 115 | void testConsistency() { |
| 116 | B v, u; |
| 117 | v.a[1].a = 47; |
| 118 | v.a[2].a = 42; |
| 119 | u = v; |
| 120 | clang_analyzer_eval(u.a[1].a == -47); // expected-warning{{TRUE}} |
| 121 | clang_analyzer_eval(u.a[2].a == -42); // expected-warning{{TRUE}} |
| 122 | } |
| 123 | |
| 124 | void testConsistencyMove() { |
| 125 | B v, u; |
| 126 | v.a[1].a = 47; |
| 127 | v.a[2].a = 42; |
| 128 | u = static_cast<B &&>(v); |
| 129 | clang_analyzer_eval(u.a[1].a == 48); // expected-warning{{TRUE}} |
| 130 | clang_analyzer_eval(u.a[2].a == 43); // expected-warning{{TRUE}} |
| 131 | } |
| 132 | } |