| 1 | //go:build ignore |
|---|---|
| 2 | // +build ignore |
| 3 | |
| 4 | package main |
| 5 | |
| 6 | // Forked from arrays.go. Requires go1.17 to parse slice to array casts. |
| 7 | // TODO(taking): Merge back into arrays.go once we can assume go1.17. |
| 8 | |
| 9 | var unknown bool // defeat dead-code elimination |
| 10 | |
| 11 | var a, b int |
| 12 | |
| 13 | func array1() { |
| 14 | sliceA := make([]*int, 10) // @line a1make |
| 15 | sliceA[0] = &a |
| 16 | |
| 17 | var sliceB []*int |
| 18 | sliceB = append(sliceB, &b) // @line a1append |
| 19 | |
| 20 | print(sliceA) // @pointsto makeslice@a1make:16 |
| 21 | print(sliceA[0]) // @pointsto command-line-arguments.a |
| 22 | |
| 23 | print(sliceB) // @pointsto append@a1append:17 |
| 24 | print(sliceB[100]) // @pointsto command-line-arguments.b |
| 25 | } |
| 26 | |
| 27 | func array2() { |
| 28 | sliceA := make([]*int, 10) // @line a2make |
| 29 | sliceA[0] = &a |
| 30 | |
| 31 | sliceB := sliceA[:] |
| 32 | |
| 33 | print(sliceA) // @pointsto makeslice@a2make:16 |
| 34 | print(sliceA[0]) // @pointsto command-line-arguments.a |
| 35 | |
| 36 | print(sliceB) // @pointsto makeslice@a2make:16 |
| 37 | print(sliceB[0]) // @pointsto command-line-arguments.a |
| 38 | } |
| 39 | |
| 40 | func array3() { |
| 41 | a := []interface{}{"", 1} |
| 42 | b := []interface{}{true, func() {}} |
| 43 | print(a[0]) // @types string | int |
| 44 | print(b[0]) // @types bool | func() |
| 45 | } |
| 46 | |
| 47 | // Test of append, copy, slice. |
| 48 | func array4() { |
| 49 | var s2 struct { // @line a4L0 |
| 50 | a [3]int |
| 51 | b struct{ c, d int } |
| 52 | } |
| 53 | var sl1 = make([]*int, 10) // @line a4make |
| 54 | var someint int // @line a4L1 |
| 55 | sl1[1] = &someint |
| 56 | sl2 := append(sl1, &s2.a[1]) // @line a4append1 |
| 57 | print(sl1) // @pointsto makeslice@a4make:16 |
| 58 | print(sl2) // @pointsto append@a4append1:15 | makeslice@a4make:16 |
| 59 | print(sl1[0]) // @pointsto someint@a4L1:6 | s2.a[*]@a4L0:6 |
| 60 | print(sl2[0]) // @pointsto someint@a4L1:6 | s2.a[*]@a4L0:6 |
| 61 | |
| 62 | // In z=append(x,y) we should observe flow from y[*] to x[*]. |
| 63 | var sl3 = make([]*int, 10) // @line a4L2 |
| 64 | _ = append(sl3, &s2.a[1]) |
| 65 | print(sl3) // @pointsto makeslice@a4L2:16 |
| 66 | print(sl3[0]) // @pointsto s2.a[*]@a4L0:6 |
| 67 | |
| 68 | var sl4 = []*int{&a} // @line a4L3 |
| 69 | sl4a := append(sl4) // @line a4L4 |
| 70 | print(sl4a) // @pointsto slicelit@a4L3:18 | append@a4L4:16 |
| 71 | print(&sl4a[0]) // @pointsto slicelit[*]@a4L3:18 | append[*]@a4L4:16 |
| 72 | print(sl4a[0]) // @pointsto command-line-arguments.a |
| 73 | |
| 74 | var sl5 = []*int{&b} // @line a4L5 |
| 75 | copy(sl5, sl4) |
| 76 | print(sl5) // @pointsto slicelit@a4L5:18 |
| 77 | print(&sl5[0]) // @pointsto slicelit[*]@a4L5:18 |
| 78 | print(sl5[0]) // @pointsto command-line-arguments.b | command-line-arguments.a |
| 79 | |
| 80 | var sl6 = sl5[:0] |
| 81 | print(sl6) // @pointsto slicelit@a4L5:18 |
| 82 | print(&sl6[0]) // @pointsto slicelit[*]@a4L5:18 |
| 83 | print(sl6[0]) // @pointsto command-line-arguments.b | command-line-arguments.a |
| 84 | } |
| 85 | |
| 86 | func array5() { |
| 87 | var arr [2]*int |
| 88 | arr[0] = &a |
| 89 | arr[1] = &b |
| 90 | |
| 91 | var n int |
| 92 | print(arr[n]) // @pointsto command-line-arguments.a | command-line-arguments.b |
| 93 | } |
| 94 | |
| 95 | func array6() { |
| 96 | var n int |
| 97 | |
| 98 | sl0 := []*int{&a} |
| 99 | ap0 := (*[1]*int)(sl0) |
| 100 | ar0 := *ap0 |
| 101 | |
| 102 | print(ap0[n]) // @pointsto command-line-arguments.a |
| 103 | print(sl0[n]) // @pointsto command-line-arguments.a |
| 104 | print(ar0[n]) // @pointsto command-line-arguments.a |
| 105 | |
| 106 | sl1 := []*int{&a} |
| 107 | ap1 := (*[1]*int)(sl1) |
| 108 | ar1 := *ap1 |
| 109 | |
| 110 | ar1[0] = &b |
| 111 | print(ap1[n]) // @pointsto command-line-arguments.a |
| 112 | print(sl1[n]) // @pointsto command-line-arguments.a |
| 113 | print(ar1[n]) // @pointsto command-line-arguments.a | command-line-arguments.b |
| 114 | |
| 115 | sl2 := []*int{&a} |
| 116 | ap2 := (*[1]*int)(sl2) |
| 117 | ar2 := *ap2 |
| 118 | |
| 119 | ap2[0] = &b |
| 120 | print(ap2[n]) // @pointsto command-line-arguments.a | command-line-arguments.b |
| 121 | print(sl2[n]) // @pointsto command-line-arguments.a | command-line-arguments.b |
| 122 | print(ar2[n]) // @pointsto command-line-arguments.a | command-line-arguments.b |
| 123 | |
| 124 | sl3 := []*int{&b, nil} |
| 125 | ap3 := (*[1]*int)(sl3) |
| 126 | ar3 := *ap3 |
| 127 | |
| 128 | print(sl3[n]) // @pointsto command-line-arguments.b |
| 129 | print(ap3[n]) // @pointsto command-line-arguments.b |
| 130 | print(ar3[n]) // @pointsto command-line-arguments.b |
| 131 | } |
| 132 | |
| 133 | func array7() { |
| 134 | var n int |
| 135 | |
| 136 | sl0 := []*int{nil, nil, nil} |
| 137 | ap0 := (*[2]*int)(sl0) |
| 138 | ap1 := (*[1]*int)(sl0[2:]) |
| 139 | |
| 140 | ap1[0] = &a |
| 141 | |
| 142 | print(sl0[n]) // @pointsto command-line-arguments.a |
| 143 | print(ap0[n]) // @pointsto command-line-arguments.a |
| 144 | print(ap1[n]) // @pointsto command-line-arguments.a |
| 145 | } |
| 146 | |
| 147 | func array8() { |
| 148 | var n int |
| 149 | |
| 150 | sl1 := make([]*int, 1, 1) |
| 151 | sl2 := make([]*int, 1, 1) |
| 152 | pa1 := (*[1]*int)(sl1) |
| 153 | pa2 := (*[1]*int)(sl2) |
| 154 | sl1[0] = &a |
| 155 | sl2[0] = &b |
| 156 | print(pa1[n]) // @pointsto command-line-arguments.a |
| 157 | print(pa2[n]) // @pointsto command-line-arguments.b |
| 158 | |
| 159 | pa2 = pa1 |
| 160 | print(pa1[n]) // @pointsto command-line-arguments.a |
| 161 | print(pa2[n]) // @pointsto command-line-arguments.a |
| 162 | } |
| 163 | |
| 164 | func main() { |
| 165 | array1() |
| 166 | array2() |
| 167 | array3() |
| 168 | array4() |
| 169 | array5() |
| 170 | array6() |
| 171 | array7() |
| 172 | array8() |
| 173 | } |
| 174 |
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