summaryrefslogtreecommitdiffstats
path: root/test/const4.go
diff options
context:
space:
mode:
Diffstat (limited to 'test/const4.go')
-rw-r--r--test/const4.go82
1 files changed, 82 insertions, 0 deletions
diff --git a/test/const4.go b/test/const4.go
new file mode 100644
index 0000000..785e1ec
--- /dev/null
+++ b/test/const4.go
@@ -0,0 +1,82 @@
+// run
+
+// Copyright 2011 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 len constants and non-constants, https://golang.org/issue/3244.
+
+package main
+
+var b struct {
+ a [10]int
+}
+
+var m map[string][20]int
+
+var s [][30]int
+
+const (
+ n1 = len(b.a)
+ n2 = len(m[""])
+ n3 = len(s[10])
+)
+
+// Non-constants (see also const5.go).
+var (
+ n4 = len(f())
+ n5 = len(<-c)
+ n6 = cap(g())
+ n7 = cap(<-c1)
+)
+
+var calledF = false
+
+func f() *[40]int {
+ calledF = true
+ return nil
+}
+
+var c = func() chan *[50]int {
+ c := make(chan *[50]int, 2)
+ c <- nil
+ c <- new([50]int)
+ return c
+}()
+
+var calledG = false
+
+func g() *[60]int {
+ calledG = true
+ return nil
+}
+
+var c1 = func() chan *[70]int {
+ c := make(chan *[70]int, 2)
+ c <- nil
+ c <- new([70]int)
+ return c
+}()
+
+func main() {
+ if n1 != 10 || n2 != 20 || n3 != 30 || n4 != 40 || n5 != 50 || n6 != 60 || n7 != 70 {
+ println("BUG:", n1, n2, n3, n4, n5, n6, n7)
+ panic("fail")
+ }
+ if !calledF {
+ println("BUG: did not call f")
+ panic("fail")
+ }
+ if <-c == nil {
+ println("BUG: did not receive from c")
+ panic("fail")
+ }
+ if !calledG {
+ println("BUG: did not call g")
+ panic("fail")
+ }
+ if <-c1 == nil {
+ println("BUG: did not receive from c1")
+ panic("fail")
+ }
+}