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Diffstat (limited to 'test/typeparam/issue50642.go')
-rw-r--r-- | test/typeparam/issue50642.go | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/test/typeparam/issue50642.go b/test/typeparam/issue50642.go new file mode 100644 index 0000000..d2d4a66 --- /dev/null +++ b/test/typeparam/issue50642.go @@ -0,0 +1,63 @@ +// run + +// Copyright 2021 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package main + +import "fmt" + +type Temp[T any] struct { +} + +var temp, temp1 any +var ch any + +func (it Temp[T]) HasNext() bool { + var ok bool + temp1 = <-ch.(chan T) + // test conversion of T to interface{} during an OAS2RECV + temp, ok = <-ch.(chan T) + return ok +} + +type MyInt int + +func (i MyInt) String() string { + return "a" +} + +type Stringer interface { + String() string +} + +type Temp2[T Stringer] struct { +} + +var temp2 Stringer + +func (it Temp2[T]) HasNext() string { + var x map[int]T + + var ok bool + // test conversion of T to Stringer during an OAS2MAPR + temp2, ok = x[43] + _ = ok + return temp2.String() +} + +func main() { + ch1 := make(chan int, 2) + ch1 <- 5 + ch1 <- 6 + ch = ch1 + iter := Temp[int]{} + iter.HasNext() + + iter2 := Temp2[MyInt]{} + if got, want := iter2.HasNext(), "a"; got != want { + panic(fmt.Sprintf("got %v, want %v", got, want)) + } + +} |