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-rw-r--r--test/fixedbugs/issue19977.go16
1 files changed, 16 insertions, 0 deletions
diff --git a/test/fixedbugs/issue19977.go b/test/fixedbugs/issue19977.go
new file mode 100644
index 0000000..6e4a9cc
--- /dev/null
+++ b/test/fixedbugs/issue19977.go
@@ -0,0 +1,16 @@
+// errorcheck
+
+// 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 19977: multiple error messages when type switching on an undefined
+
+package foo
+
+func Foo() {
+ switch x := a.(type) { // ERROR "undefined: a|reference to undefined name .*a"
+ default:
+ _ = x
+ }
+}