1 files changed, 28 insertions, 0 deletions
diff --git a/test/fixedbugs/issue6671.go b/test/fixedbugs/issue6671.go
new file mode 100644
index 0000000..ce43f31
--- /dev/null
+++ b/test/fixedbugs/issue6671.go
@@ -0,0 +1,28 @@
+// errorcheck
+
+// Copyright 2014 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 6671: Logical operators should produce untyped bool for untyped operands.
+
+package p
+
+type mybool bool
+
+func _(x, y int) {
+	type mybool bool
+	var b mybool
+	_ = b
+	b = bool(true)             // ERROR "cannot use"
+	b = true                   // permitted as expected
+	b = bool(true) && true     // ERROR "cannot use"
+	b = true && true           // permitted => && returns an untyped bool
+	b = x < y                  // permitted => x < y returns an untyped bool
+	b = true && x < y          // permitted => result of && returns untyped bool
+	b = x < y && x < y         // permitted => result of && returns untyped bool
+	b = x < y || x < y         // permitted => result of || returns untyped bool
+	var c bool = true && x < y // permitted => result of && is bool
+	c = false || x < y         // permitted => result of || returns untyped bool
+	_ = c
+}