| 1 | // Copyright 2021 The Go Authors. All rights reserved. |
|---|---|
| 2 | // Use of this source code is governed by a BSD-style |
| 3 | // license that can be found in the LICENSE file. |
| 4 | |
| 5 | // go:build ignore |
| 6 | |
| 7 | package testdata |
| 8 | |
| 9 | type I interface { |
| 10 | Foo() |
| 11 | } |
| 12 | |
| 13 | type J interface { |
| 14 | Foo() |
| 15 | Bar() |
| 16 | } |
| 17 | |
| 18 | type B struct { |
| 19 | p int |
| 20 | } |
| 21 | |
| 22 | func (b B) Foo() {} |
| 23 | func (b B) Bar() {} |
| 24 | |
| 25 | func Baz(b *B, S []*I, s []J) { |
| 26 | var x [3]I |
| 27 | x[1] = b |
| 28 | |
| 29 | a := &s[2] |
| 30 | (*a).Bar() |
| 31 | |
| 32 | print([3]*I{nil, nil, nil}[2]) |
| 33 | } |
| 34 | |
| 35 | // Relevant SSA: |
| 36 | // func Baz(b *B, S []*I, s []J): |
| 37 | // t0 = local [3]I (x) |
| 38 | // t1 = &t0[1:int] |
| 39 | // ... |
| 40 | // t3 = &s[2:int] |
| 41 | // t4 = *t3 |
| 42 | // ... |
| 43 | // t6 = local [3]*I (complit) |
| 44 | // t7 = &t6[0:int] |
| 45 | // ... |
| 46 | // t11 = t10[2:int] |
| 47 | // ... |
| 48 | |
| 49 | // WANT: |
| 50 | // Slice([]testdata.I) -> Local(t1) |
| 51 | // Local(t1) -> Slice([]testdata.I) |
| 52 | // Slice([]testdata.J) -> Local(t3) |
| 53 | // Local(t3) -> Local(t4), Slice([]testdata.J) |
| 54 | // Local(t11) -> Slice([]*testdata.I) |
| 55 | // Slice([]*testdata.I) -> Local(t11), PtrInterface(testdata.I) |
| 56 | // Constant(*testdata.I) -> PtrInterface(testdata.I) |
| 57 |