Adding upstream version 1.20.14.upstream/1.20.14upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 46 insertions, 0 deletions

diff --git a/test/typeparam/interfacearg.go b/test/typeparam/interfacearg.go
new file mode 100644
index 0000000..0e1fd00
--- /dev/null
+++ b/test/typeparam/interfacearg.go
@@ -0,0 +1,46 @@
+// 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
+
+type I interface{}
+
+type _S[T any] struct {
+	x *T
+}
+
+// F is a non-generic function, but has a type _S[I] which is instantiated from a
+// generic type. Test that _S[I] is successfully exported.
+func F() {
+	v := _S[I]{}
+	if v.x != nil {
+		panic(v)
+	}
+}
+
+// Testing the various combinations of method expressions.
+type S1 struct{}
+
+func (*S1) M() {}
+
+type S2 struct{}
+
+func (S2) M() {}
+
+func _F1[T interface{ M() }](t T) {
+	_ = T.M
+}
+
+func F2() {
+	_F1(&S1{})
+	_F1(S2{})
+	_F1(&S2{})
+}
+
+func main() {
+	F()
+	F2()
+}