| 1 | //go:build ignore |
|---|---|
| 2 | // +build ignore |
| 3 | |
| 4 | package main |
| 5 | |
| 6 | var unknown bool // defeat dead-code elimination |
| 7 | |
| 8 | var a, b int |
| 9 | |
| 10 | func array1() { |
| 11 | sliceA := make([]*int, 10) // @line a1make |
| 12 | sliceA[0] = &a |
| 13 | |
| 14 | var sliceB []*int |
| 15 | sliceB = append(sliceB, &b) // @line a1append |
| 16 | |
| 17 | print(sliceA) // @pointsto makeslice@a1make:16 |
| 18 | print(sliceA[0]) // @pointsto command-line-arguments.a |
| 19 | |
| 20 | print(sliceB) // @pointsto append@a1append:17 |
| 21 | print(sliceB[100]) // @pointsto command-line-arguments.b |
| 22 | } |
| 23 | |
| 24 | func array2() { |
| 25 | sliceA := make([]*int, 10) // @line a2make |
| 26 | sliceA[0] = &a |
| 27 | |
| 28 | sliceB := sliceA[:] |
| 29 | |
| 30 | print(sliceA) // @pointsto makeslice@a2make:16 |
| 31 | print(sliceA[0]) // @pointsto command-line-arguments.a |
| 32 | |
| 33 | print(sliceB) // @pointsto makeslice@a2make:16 |
| 34 | print(sliceB[0]) // @pointsto command-line-arguments.a |
| 35 | } |
| 36 | |
| 37 | func array3() { |
| 38 | a := []interface{}{"", 1} |
| 39 | b := []interface{}{true, func() {}} |
| 40 | print(a[0]) // @types string | int |
| 41 | print(b[0]) // @types bool | func() |
| 42 | } |
| 43 | |
| 44 | // Test of append, copy, slice. |
| 45 | func array4() { |
| 46 | var s2 struct { // @line a4L0 |
| 47 | a [3]int |
| 48 | b struct{ c, d int } |
| 49 | } |
| 50 | var sl1 = make([]*int, 10) // @line a4make |
| 51 | var someint int // @line a4L1 |
| 52 | sl1[1] = &someint |
| 53 | sl2 := append(sl1, &s2.a[1]) // @line a4append1 |
| 54 | print(sl1) // @pointsto makeslice@a4make:16 |
| 55 | print(sl2) // @pointsto append@a4append1:15 | makeslice@a4make:16 |
| 56 | print(sl1[0]) // @pointsto someint@a4L1:6 | s2.a[*]@a4L0:6 |
| 57 | print(sl2[0]) // @pointsto someint@a4L1:6 | s2.a[*]@a4L0:6 |
| 58 | |
| 59 | // In z=append(x,y) we should observe flow from y[*] to x[*]. |
| 60 | var sl3 = make([]*int, 10) // @line a4L2 |
| 61 | _ = append(sl3, &s2.a[1]) |
| 62 | print(sl3) // @pointsto makeslice@a4L2:16 |
| 63 | print(sl3[0]) // @pointsto s2.a[*]@a4L0:6 |
| 64 | |
| 65 | var sl4 = []*int{&a} // @line a4L3 |
| 66 | sl4a := append(sl4) // @line a4L4 |
| 67 | print(sl4a) // @pointsto slicelit@a4L3:18 | append@a4L4:16 |
| 68 | print(&sl4a[0]) // @pointsto slicelit[*]@a4L3:18 | append[*]@a4L4:16 |
| 69 | print(sl4a[0]) // @pointsto command-line-arguments.a |
| 70 | |
| 71 | var sl5 = []*int{&b} // @line a4L5 |
| 72 | copy(sl5, sl4) |
| 73 | print(sl5) // @pointsto slicelit@a4L5:18 |
| 74 | print(&sl5[0]) // @pointsto slicelit[*]@a4L5:18 |
| 75 | print(sl5[0]) // @pointsto command-line-arguments.b | command-line-arguments.a |
| 76 | |
| 77 | var sl6 = sl5[:0] |
| 78 | print(sl6) // @pointsto slicelit@a4L5:18 |
| 79 | print(&sl6[0]) // @pointsto slicelit[*]@a4L5:18 |
| 80 | print(sl6[0]) // @pointsto command-line-arguments.b | command-line-arguments.a |
| 81 | } |
| 82 | |
| 83 | func array5() { |
| 84 | var arr [2]*int |
| 85 | arr[0] = &a |
| 86 | arr[1] = &b |
| 87 | |
| 88 | var n int |
| 89 | print(arr[n]) // @pointsto command-line-arguments.a | command-line-arguments.b |
| 90 | } |
| 91 | |
| 92 | func main() { |
| 93 | array1() |
| 94 | array2() |
| 95 | array3() |
| 96 | array4() |
| 97 | array5() |
| 98 | } |
| 99 |
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