Initial commit: Go 1.23 release state

test/typeparam/issue47716.go

@@ -0,0 +1,68 @@
+// 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"
+)
+
+// size returns the size of type T
+func size[T any](x T) uintptr {
+	return unsafe.Sizeof(x)
+}
+
+// size returns the alignment of type T
+func align[T any](x T) uintptr {
+	return unsafe.Alignof(x)
+}
+
+type Tstruct[T any] struct {
+	f1 T
+	f2 int
+}
+
+// offset returns the offset of field f2 in the generic type Tstruct
+func (r *Tstruct[T]) offset() uintptr {
+	return unsafe.Offsetof(r.f2)
+}
+
+func main() {
+	v1 := int(5)
+	if got, want := size(v1), unsafe.Sizeof(v1); got != want {
+		panic(fmt.Sprintf("got %d, want %d", got, want))
+	}
+	if got, want := align(v1), unsafe.Alignof(v1); got != want {
+		panic(fmt.Sprintf("got %d, want %d", got, want))
+	}
+
+	v2 := "abc"
+	if got, want := size(v2), unsafe.Sizeof(v2); got != want {
+		panic(fmt.Sprintf("got %d, want %d", got, want))
+	}
+	if got, want := align(v2), unsafe.Alignof(v2); got != want {
+		panic(fmt.Sprintf("got %d, want %d", got, want))
+	}
+
+	var v3 Tstruct[int]
+	if got, want := unsafe.Offsetof(v3.f2), unsafe.Sizeof(v1); got != want {
+		panic(fmt.Sprintf("got %d, want %d", got, want))
+	}
+
+	var v4 Tstruct[interface{}]
+	var v5 interface{}
+	if got, want := unsafe.Offsetof(v4.f2), unsafe.Sizeof(v5); got != want {
+		panic(fmt.Sprintf("got %d, want %d", got, want))
+	}
+
+	if got, want := v3.offset(), unsafe.Offsetof(v3.f2); got != want {
+		panic(fmt.Sprintf("got %d, want %d", got, want))
+	}
+	if got, want := v4.offset(), unsafe.Offsetof(v4.f2); got != want {
+		panic(fmt.Sprintf("got %d, want %d", got, want))
+	}
+}