| 1 | // +build ignore |
|---|---|
| 2 | |
| 3 | package main |
| 4 | |
| 5 | // Test of interface calls. |
| 6 | |
| 7 | func use(interface{}) |
| 8 | |
| 9 | type A byte // instantiated but not a reflect type |
| 10 | |
| 11 | func (A) f() {} // called directly |
| 12 | func (A) F() {} // unreachable |
| 13 | |
| 14 | type B int // a reflect type |
| 15 | |
| 16 | func (*B) f() {} // reachable via interface invoke |
| 17 | func (*B) F() {} // reachable: exported method of reflect type |
| 18 | |
| 19 | type B2 int // a reflect type, and *B2 also |
| 20 | |
| 21 | func (B2) f() {} // reachable via interface invoke |
| 22 | func (B2) g() {} // reachable: exported method of reflect type |
| 23 | |
| 24 | type C string // not instantiated |
| 25 | |
| 26 | func (C) f() {} // unreachable |
| 27 | func (C) F() {} // unreachable |
| 28 | |
| 29 | type D uint // instantiated only in dead code |
| 30 | |
| 31 | func (D) f() {} // unreachable |
| 32 | func (D) F() {} // unreachable |
| 33 | |
| 34 | func main() { |
| 35 | A(0).f() |
| 36 | |
| 37 | use(new(B)) |
| 38 | use(B2(0)) |
| 39 | |
| 40 | var i interface { |
| 41 | f() |
| 42 | } |
| 43 | i.f() // calls (*B).f, (*B2).f and (B2.f) |
| 44 | |
| 45 | live() |
| 46 | } |
| 47 | |
| 48 | func live() { |
| 49 | var j interface { |
| 50 | f() |
| 51 | g() |
| 52 | } |
| 53 | j.f() // calls (B2).f and (*B2).f but not (*B).f (no g method). |
| 54 | } |
| 55 | |
| 56 | func dead() { |
| 57 | use(D(0)) |
| 58 | } |
| 59 | |
| 60 | // WANT: |
| 61 | // Dynamic calls |
| 62 | // live --> (*B2).f |
| 63 | // live --> (B2).f |
| 64 | // main --> (*B).f |
| 65 | // main --> (*B2).f |
| 66 | // main --> (B2).f |
| 67 | // Reachable functions |
| 68 | // (*B).F |
| 69 | // (*B).f |
| 70 | // (*B2).f |
| 71 | // (A).f |
| 72 | // (B2).f |
| 73 | // live |
| 74 | // use |
| 75 | // Reflect types |
| 76 | // *B |
| 77 | // *B2 |
| 78 | // B |
| 79 | // B2 |
| 80 |