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-rw-r--r--test/typeparam/issue49295.go30
1 files changed, 30 insertions, 0 deletions
diff --git a/test/typeparam/issue49295.go b/test/typeparam/issue49295.go
new file mode 100644
index 0000000..f96c896
--- /dev/null
+++ b/test/typeparam/issue49295.go
@@ -0,0 +1,30 @@
+// 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 "io"
+
+type Reader struct {
+ buf []byte
+}
+type Token *[16]byte
+
+func Read[T interface{ ~*[16]byte }](r *Reader) (t T, err error) {
+ if n := len(t); len(r.buf) >= n {
+ t = T(r.buf[:n])
+ r.buf = r.buf[n:]
+ return
+ }
+ err = io.EOF
+ return
+}
+
+func main() {
+ r := &Reader{buf: []byte("0123456789abcdef")}
+ token, err := Read[Token](r)
+ _, _ = token, err
+}