From 97d17dc02398730822abba75a3d3ae26c0f3c0fd Mon Sep 17 00:00:00 2001
From: korzhao <korzhao95@gmail.com>
Date: Sat, 21 Aug 2021 02:51:51 +0800
Subject: test/typeparam: add a test case for issue46591

Fixes #46591

Change-Id: I4875092ecd7760b0cd487e793576ef7a9a569a0e
Reviewed-on: https://go-review.googlesource.com/c/go/+/343970
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Robert Griesemer <gri@golang.org>
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Robert Griesemer <gri@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
---
 test/typeparam/issue46591.go | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 test/typeparam/issue46591.go

(limited to 'test')

diff --git a/test/typeparam/issue46591.go b/test/typeparam/issue46591.go
new file mode 100644
index 0000000000..e7b9fa2b48
--- /dev/null
+++ b/test/typeparam/issue46591.go
@@ -0,0 +1,22 @@
+// run -gcflags=-G=3
+
+// 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 T[_ any] struct{}
+
+var m = map[interface{}]int{
+	T[struct{ int }]{}: 0,
+	T[struct {
+		int "x"
+	}]{}: 0,
+}
+
+func main() {
+	if len(m) != 2 {
+		panic(len(m))
+	}
+}
-- 
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