Adding upstream version 1.20.14.upstream/1.20.14upstream

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

1 files changed, 54 insertions, 0 deletions

diff --git a/test/typeparam/issue48424.go b/test/typeparam/issue48424.go
new file mode 100644
index 0000000..c5e5d4b
--- /dev/null
+++ b/test/typeparam/issue48424.go
@@ -0,0 +1,54 @@
+// 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.
+
+// Smoke test for constraint literals with elided interface
+// per issue #48424.
+
+package main
+
+func identity[T int](x T) T {
+	return x
+}
+
+func min[T int | string](x, y T) T {
+	if x < y {
+		return x
+	}
+	return y
+}
+
+func max[T ~int | ~float64](x, y T) T {
+	if x > y {
+		return x
+	}
+	return y
+}
+
+func main() {
+	if identity(1) != 1 {
+		panic("identity(1) failed")
+	}
+
+	if min(2, 3) != 2 {
+		panic("min(2, 3) failed")
+	}
+
+	if min("foo", "bar") != "bar" {
+		panic(`min("foo", "bar") failed`)
+	}
+
+	if max(2, 3) != 3 {
+		panic("max(2, 3) failed")
+	}
+}
+
+// Some random type parameter lists with elided interfaces.
+
+type (
+	_[T struct{}]                     struct{}
+	_[M map[K]V, K comparable, V any] struct{}
+	_[_ interface{} | int]            struct{}
+)