mirror of
https://github.com/golang/go
synced 2024-11-07 10:26:20 -07:00
33 lines
748 B
Go
33 lines
748 B
Go
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// run -gcflags=-G=3
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// Copyright 2021 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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import (
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"fmt"
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"unsafe"
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)
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type pair[F1, F2 any] struct {
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f1 F1
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f2 F2
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}
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func main() {
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p := pair[int32, int64]{1, 2}
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if got, want := unsafe.Sizeof(p.f1), uintptr(4); got != want {
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panic(fmt.Sprintf("unexpected f1 size == %d, want %d", got, want))
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}
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if got, want := unsafe.Sizeof(p.f2), uintptr(8); got != want {
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panic(fmt.Sprintf("unexpected f2 size == %d, want %d", got, want))
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}
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type mypair struct { f1 int32; f2 int64 }
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mp := mypair(p)
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if mp.f1 != 1 || mp.f2 != 2 {
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panic(fmt.Sprintf("mp == %#v, want %#v", mp, mypair{1, 2}))
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}
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}
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