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-rw-r--r--test/fixedbugs/issue20174.go18
1 files changed, 18 insertions, 0 deletions
diff --git a/test/fixedbugs/issue20174.go b/test/fixedbugs/issue20174.go
new file mode 100644
index 0000000..a9c1fd8
--- /dev/null
+++ b/test/fixedbugs/issue20174.go
@@ -0,0 +1,18 @@
+// compile -c=2
+
+// Copyright 2017 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.
+
+// Issue 20174: failure to typecheck contents of *T in the frontend.
+
+package p
+
+func f() {
+ _ = (*interface{})(nil) // interface{} here used to not have its width calculated going into backend
+ select {
+ case _ = <-make(chan interface {
+ M()
+ }, 1):
+ }
+}