diff options
Diffstat (limited to 'test/typeparam/pair.go')
-rw-r--r-- | test/typeparam/pair.go | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/test/typeparam/pair.go b/test/typeparam/pair.go new file mode 100644 index 0000000..dd0adb1 --- /dev/null +++ b/test/typeparam/pair.go @@ -0,0 +1,36 @@ +// 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" + "unsafe" +) + +type pair[F1, F2 any] struct { + f1 F1 + f2 F2 +} + +func main() { + p := pair[int32, int64]{1, 2} + if got, want := unsafe.Sizeof(p.f1), uintptr(4); got != want { + panic(fmt.Sprintf("unexpected f1 size == %d, want %d", got, want)) + } + if got, want := unsafe.Sizeof(p.f2), uintptr(8); got != want { + panic(fmt.Sprintf("unexpected f2 size == %d, want %d", got, want)) + } + + type mypair struct { + f1 int32 + f2 int64 + } + mp := mypair(p) + if mp.f1 != 1 || mp.f2 != 2 { + panic(fmt.Sprintf("mp == %#v, want %#v", mp, mypair{1, 2})) + } +} |