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-rw-r--r--test/fixedbugs/issue9521.go18
1 files changed, 18 insertions, 0 deletions
diff --git a/test/fixedbugs/issue9521.go b/test/fixedbugs/issue9521.go
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+++ b/test/fixedbugs/issue9521.go
@@ -0,0 +1,18 @@
+// errorcheck
+
+// Copyright 2015 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.
+
+// Test that an incorrect use of the blank identifier is caught.
+// Does not compile.
+
+package main
+
+func f() (_, _ []int) { return }
+func g() (x []int, y float64) { return }
+
+func main() {
+ _ = append(f()) // ERROR "cannot use \[\]int value as type int in append|incompatible type"
+ _ = append(g()) // ERROR "cannot use float64 value as type int in append|incompatible type"
+}