| 1 | //go:build ignore |
|---|---|
| 2 | // +build ignore |
| 3 | |
| 4 | package main |
| 5 | |
| 6 | var a, b, c int |
| 7 | |
| 8 | var unknown bool // defeat dead-code elimination |
| 9 | |
| 10 | func func1() { |
| 11 | var h int // @line f1h |
| 12 | f := func(x *int) *int { |
| 13 | if unknown { |
| 14 | return &b |
| 15 | } |
| 16 | return x |
| 17 | } |
| 18 | |
| 19 | // FV(g) = {f, h} |
| 20 | g := func(x *int) *int { |
| 21 | if unknown { |
| 22 | return &h |
| 23 | } |
| 24 | return f(x) |
| 25 | } |
| 26 | |
| 27 | print(g(&a)) // @pointsto command-line-arguments.a | command-line-arguments.b | h@f1h:6 |
| 28 | print(f(&a)) // @pointsto command-line-arguments.a | command-line-arguments.b |
| 29 | print(&a) // @pointsto command-line-arguments.a |
| 30 | } |
| 31 | |
| 32 | // @calls command-line-arguments.func1 -> command-line-arguments.func1$2 |
| 33 | // @calls command-line-arguments.func1 -> command-line-arguments.func1$1 |
| 34 | // @calls command-line-arguments.func1$2 -> command-line-arguments.func1$1 |
| 35 | |
| 36 | func func2() { |
| 37 | var x, y *int |
| 38 | defer func() { |
| 39 | x = &a |
| 40 | }() |
| 41 | go func() { |
| 42 | y = &b |
| 43 | }() |
| 44 | print(x) // @pointsto command-line-arguments.a |
| 45 | print(y) // @pointsto command-line-arguments.b |
| 46 | } |
| 47 | |
| 48 | func func3() { |
| 49 | x, y := func() (x, y *int) { |
| 50 | x = &a |
| 51 | y = &b |
| 52 | if unknown { |
| 53 | return nil, &c |
| 54 | } |
| 55 | return |
| 56 | }() |
| 57 | print(x) // @pointsto command-line-arguments.a |
| 58 | print(y) // @pointsto command-line-arguments.b | command-line-arguments.c |
| 59 | } |
| 60 | |
| 61 | func swap(x, y *int) (*int, *int) { // @line swap |
| 62 | print(&x) // @pointsto x@swap:11 |
| 63 | print(x) // @pointsto makeslice[*]@func4make:11 |
| 64 | print(&y) // @pointsto y@swap:14 |
| 65 | print(y) // @pointsto j@f4j:5 |
| 66 | return y, x |
| 67 | } |
| 68 | |
| 69 | func func4() { |
| 70 | a := make([]int, 10) // @line func4make |
| 71 | i, j := 123, 456 // @line f4j |
| 72 | _ = i |
| 73 | p, q := swap(&a[3], &j) |
| 74 | print(p) // @pointsto j@f4j:5 |
| 75 | print(q) // @pointsto makeslice[*]@func4make:11 |
| 76 | |
| 77 | f := &b |
| 78 | print(f) // @pointsto command-line-arguments.b |
| 79 | } |
| 80 | |
| 81 | type T int |
| 82 | |
| 83 | func (t *T) f(x *int) *int { |
| 84 | print(t) // @pointsto command-line-arguments.a |
| 85 | print(x) // @pointsto command-line-arguments.c |
| 86 | return &b |
| 87 | } |
| 88 | |
| 89 | func (t *T) g(x *int) *int { |
| 90 | print(t) // @pointsto command-line-arguments.a |
| 91 | print(x) // @pointsto command-line-arguments.b |
| 92 | return &c |
| 93 | } |
| 94 | |
| 95 | func (t *T) h(x *int) *int { |
| 96 | print(t) // @pointsto command-line-arguments.a |
| 97 | print(x) // @pointsto command-line-arguments.b |
| 98 | return &c |
| 99 | } |
| 100 | |
| 101 | var h func(*T, *int) *int |
| 102 | |
| 103 | func func5() { |
| 104 | // Static call of method. |
| 105 | t := (*T)(&a) |
| 106 | print(t.f(&c)) // @pointsto command-line-arguments.b |
| 107 | |
| 108 | // Static call of method as function |
| 109 | print((*T).g(t, &b)) // @pointsto command-line-arguments.c |
| 110 | |
| 111 | // Dynamic call (not invoke) of method. |
| 112 | h = (*T).h |
| 113 | print(h(t, &b)) // @pointsto command-line-arguments.c |
| 114 | } |
| 115 | |
| 116 | // @calls command-line-arguments.func5 -> (*command-line-arguments.T).f |
| 117 | // @calls command-line-arguments.func5 -> (*command-line-arguments.T).g$thunk |
| 118 | // @calls command-line-arguments.func5 -> (*command-line-arguments.T).h$thunk |
| 119 | |
| 120 | func func6() { |
| 121 | A := &a |
| 122 | f := func() *int { |
| 123 | return A // (free variable) |
| 124 | } |
| 125 | print(f()) // @pointsto command-line-arguments.a |
| 126 | } |
| 127 | |
| 128 | // @calls command-line-arguments.func6 -> command-line-arguments.func6$1 |
| 129 | |
| 130 | type I interface { |
| 131 | f() |
| 132 | } |
| 133 | |
| 134 | type D struct{} |
| 135 | |
| 136 | func (D) f() {} |
| 137 | |
| 138 | func func7() { |
| 139 | var i I = D{} |
| 140 | imethodClosure := i.f |
| 141 | imethodClosure() |
| 142 | // @calls command-line-arguments.func7 -> (command-line-arguments.I).f$bound |
| 143 | // @calls (command-line-arguments.I).f$bound -> (command-line-arguments.D).f |
| 144 | |
| 145 | var d D |
| 146 | cmethodClosure := d.f |
| 147 | cmethodClosure() |
| 148 | // @calls command-line-arguments.func7 -> (command-line-arguments.D).f$bound |
| 149 | // @calls (command-line-arguments.D).f$bound ->(command-line-arguments.D).f |
| 150 | |
| 151 | methodExpr := D.f |
| 152 | methodExpr(d) |
| 153 | // @calls command-line-arguments.func7 -> (command-line-arguments.D).f$thunk |
| 154 | } |
| 155 | |
| 156 | func func8(x ...int) { |
| 157 | print(&x[0]) // @pointsto varargs[*]@varargs:15 |
| 158 | } |
| 159 | |
| 160 | type E struct { |
| 161 | x1, x2, x3, x4, x5 *int |
| 162 | } |
| 163 | |
| 164 | func (e E) f() {} |
| 165 | |
| 166 | func func9() { |
| 167 | // Regression test for bug reported by Jon Valdes on golang-dev, Jun 19 2014. |
| 168 | // The receiver of a bound method closure may be of a multi-node type, E. |
| 169 | // valueNode was reserving only a single node for it, so the |
| 170 | // nodes used by the immediately following constraints |
| 171 | // (e.g. param 'i') would get clobbered. |
| 172 | |
| 173 | var e E |
| 174 | e.x1 = &a |
| 175 | e.x2 = &a |
| 176 | e.x3 = &a |
| 177 | e.x4 = &a |
| 178 | e.x5 = &a |
| 179 | |
| 180 | _ = e.f // form a closure---must reserve sizeof(E) nodes |
| 181 | |
| 182 | func(i I) { |
| 183 | i.f() // must not crash the solver |
| 184 | }(new(D)) |
| 185 | |
| 186 | print(e.x1) // @pointsto command-line-arguments.a |
| 187 | print(e.x2) // @pointsto command-line-arguments.a |
| 188 | print(e.x3) // @pointsto command-line-arguments.a |
| 189 | print(e.x4) // @pointsto command-line-arguments.a |
| 190 | print(e.x5) // @pointsto command-line-arguments.a |
| 191 | } |
| 192 | |
| 193 | func main() { |
| 194 | func1() |
| 195 | func2() |
| 196 | func3() |
| 197 | func4() |
| 198 | func5() |
| 199 | func6() |
| 200 | func7() |
| 201 | func8(1, 2, 3) // @line varargs |
| 202 | func9() |
| 203 | } |
| 204 | |
| 205 | // @calls <root> -> command-line-arguments.main |
| 206 | // @calls <root> -> command-line-arguments.init |
| 207 |
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