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-rw-r--r--test/fixedbugs/issue16870.go140
1 files changed, 140 insertions, 0 deletions
diff --git a/test/fixedbugs/issue16870.go b/test/fixedbugs/issue16870.go
new file mode 100644
index 0000000..2309997
--- /dev/null
+++ b/test/fixedbugs/issue16870.go
@@ -0,0 +1,140 @@
+// run
+
+// Copyright 2016 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.
+
+package main
+
+import (
+ "log"
+ "reflect"
+)
+
+func test(got, want interface{}) {
+ if !reflect.DeepEqual(got, want) {
+ log.Fatalf("got %v, want %v", got, want)
+ }
+}
+
+func main() {
+ var i int
+ var ip *int
+ var ok interface{}
+
+ // Channel receives.
+ c := make(chan int, 1)
+ c2 := make(chan int)
+
+ c <- 42
+ i, ok = <-c
+ test(i, 42)
+ test(ok, true)
+
+ c <- 42
+ _, ok = <-c
+ test(ok, true)
+
+ c <- 42
+ select {
+ case i, ok = <-c:
+ test(i, 42)
+ test(ok, true)
+ }
+
+ c <- 42
+ select {
+ case _, ok = <-c:
+ test(ok, true)
+ }
+
+ c <- 42
+ select {
+ case i, ok = <-c:
+ test(i, 42)
+ test(ok, true)
+ default:
+ log.Fatal("bad select")
+ }
+
+ c <- 42
+ select {
+ case _, ok = <-c:
+ test(ok, true)
+ default:
+ log.Fatal("bad select")
+ }
+
+ c <- 42
+ select {
+ case i, ok = <-c:
+ test(i, 42)
+ test(ok, true)
+ case <-c2:
+ log.Fatal("bad select")
+ }
+
+ c <- 42
+ select {
+ case _, ok = <-c:
+ test(ok, true)
+ case <-c2:
+ log.Fatal("bad select")
+ }
+
+ close(c)
+ i, ok = <-c
+ test(i, 0)
+ test(ok, false)
+
+ _, ok = <-c
+ test(ok, false)
+
+ // Map indexing.
+ m := make(map[int]int)
+
+ i, ok = m[0]
+ test(i, 0)
+ test(ok, false)
+
+ _, ok = m[0]
+ test(ok, false)
+
+ m[0] = 42
+ i, ok = m[0]
+ test(i, 42)
+ test(ok, true)
+
+ _, ok = m[0]
+ test(ok, true)
+
+ // Type assertions.
+ var u interface{}
+
+ i, ok = u.(int)
+ test(i, 0)
+ test(ok, false)
+
+ ip, ok = u.(*int)
+ test(ip, (*int)(nil))
+ test(ok, false)
+
+ _, ok = u.(int)
+ test(ok, false)
+
+ u = 42
+ i, ok = u.(int)
+ test(i, 42)
+ test(ok, true)
+
+ _, ok = u.(int)
+ test(ok, true)
+
+ u = &i
+ ip, ok = u.(*int)
+ test(ip, &i)
+ test(ok, true)
+
+ _, ok = u.(*int)
+ test(ok, true)
+}