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-rw-r--r--test/fixedbugs/issue13480.go38
1 files changed, 38 insertions, 0 deletions
diff --git a/test/fixedbugs/issue13480.go b/test/fixedbugs/issue13480.go
new file mode 100644
index 0000000..7e859c5
--- /dev/null
+++ b/test/fixedbugs/issue13480.go
@@ -0,0 +1,38 @@
+// 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.
+
+// Verify that comparisons of slice/map/func values against converted nil
+// values are properly rejected.
+
+package p
+
+func bug() {
+ type S []byte
+ type M map[int]int
+ type F func()
+
+ var s S
+ var m M
+ var f F
+
+ _ = s == S(nil) // ERROR "compare.*to nil|operator \=\= not defined for .|cannot compare"
+ _ = S(nil) == s // ERROR "compare.*to nil|operator \=\= not defined for .|cannot compare"
+ switch s {
+ case S(nil): // ERROR "compare.*to nil|operator \=\= not defined for .|cannot compare"
+ }
+
+ _ = m == M(nil) // ERROR "compare.*to nil|operator \=\= not defined for .|cannot compare"
+ _ = M(nil) == m // ERROR "compare.*to nil|operator \=\= not defined for .|cannot compare"
+ switch m {
+ case M(nil): // ERROR "compare.*to nil|operator \=\= not defined for .|cannot compare"
+ }
+
+ _ = f == F(nil) // ERROR "compare.*to nil|operator \=\= not defined for .|cannot compare"
+ _ = F(nil) == f // ERROR "compare.*to nil|operator \=\= not defined for .|cannot compare"
+ switch f {
+ case F(nil): // ERROR "compare.*to nil|operator \=\= not defined for .|cannot compare"
+ }
+}