| 1 | //go:build ignore |
|---|---|
| 2 | // +build ignore |
| 3 | |
| 4 | package main |
| 5 | |
| 6 | // Demonstration of directionality of flow edges. |
| 7 | |
| 8 | func f1() {} |
| 9 | func f2() {} |
| 10 | |
| 11 | var somepred bool |
| 12 | |
| 13 | // Tracking functions. |
| 14 | func flow1() { |
| 15 | s := f1 |
| 16 | p := f2 |
| 17 | q := p |
| 18 | r := q |
| 19 | if somepred { |
| 20 | r = s |
| 21 | } |
| 22 | print(s) // @pointsto command-line-arguments.f1 |
| 23 | print(p) // @pointsto command-line-arguments.f2 |
| 24 | print(q) // @pointsto command-line-arguments.f2 |
| 25 | print(r) // @pointsto command-line-arguments.f1 | command-line-arguments.f2 |
| 26 | } |
| 27 | |
| 28 | // Tracking concrete types in interfaces. |
| 29 | func flow2() { |
| 30 | var s interface{} = 1 |
| 31 | var p interface{} = "foo" |
| 32 | q := p |
| 33 | r := q |
| 34 | if somepred { |
| 35 | r = s |
| 36 | } |
| 37 | print(s) // @types int |
| 38 | print(p) // @types string |
| 39 | print(q) // @types string |
| 40 | print(r) // @types int | string |
| 41 | } |
| 42 | |
| 43 | var g1, g2 int |
| 44 | |
| 45 | // Tracking addresses of globals. |
| 46 | func flow3() { |
| 47 | s := &g1 |
| 48 | p := &g2 |
| 49 | q := p |
| 50 | r := q |
| 51 | if somepred { |
| 52 | r = s |
| 53 | } |
| 54 | print(s) // @pointsto command-line-arguments.g1 |
| 55 | print(p) // @pointsto command-line-arguments.g2 |
| 56 | print(q) // @pointsto command-line-arguments.g2 |
| 57 | print(r) // @pointsto command-line-arguments.g2 | command-line-arguments.g1 |
| 58 | } |
| 59 | |
| 60 | func main() { |
| 61 | flow1() |
| 62 | flow2() |
| 63 | flow3() |
| 64 | } |
| 65 |
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