[dev.power64] code review 160200044: build: merge default into dev.power64

test/fixedbugs/issue8475.go

+// build
+
+// 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 8745: comma-ok assignments should produce untyped bool as 2nd result.
+
+package main
+
+type mybool bool
+
+func main() {
+        var ok mybool
+        _ = ok
+
+        var i interface{}
+        _, ok = i.(int)
+
+        var m map[int]int
+        _, ok = m[0]
+
+        var c chan int
+        _, ok = <-c
+}