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-rw-r--r--test/fixedbugs/issue20029.go32
1 files changed, 32 insertions, 0 deletions
diff --git a/test/fixedbugs/issue20029.go b/test/fixedbugs/issue20029.go
new file mode 100644
index 0000000..db3f8aa
--- /dev/null
+++ b/test/fixedbugs/issue20029.go
@@ -0,0 +1,32 @@
+// run
+
+// Copyright 2017 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 20029: make sure we zero at VARKILLs of
+// ambiguously live variables.
+// The ambiguously live variable here is the hiter
+// for the inner range loop.
+
+package main
+
+import "runtime"
+
+func f(m map[int]int) {
+outer:
+ for i := 0; i < 10; i++ {
+ for k := range m {
+ if k == 5 {
+ continue outer
+ }
+ }
+ runtime.GC()
+ break
+ }
+ runtime.GC()
+}
+func main() {
+ m := map[int]int{1: 2, 2: 3, 3: 4}
+ f(m)
+}