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-rw-r--r--test/fixedbugs/issue18906.go36
1 files changed, 36 insertions, 0 deletions
diff --git a/test/fixedbugs/issue18906.go b/test/fixedbugs/issue18906.go
new file mode 100644
index 0000000..544400b
--- /dev/null
+++ b/test/fixedbugs/issue18906.go
@@ -0,0 +1,36 @@
+// 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.
+
+package main
+
+//go:noinline
+func f(x int) {
+}
+
+//go:noinline
+func val() int8 {
+ return -1
+}
+
+var (
+ array = [257]int{}
+ slice = array[1:]
+)
+
+func init() {
+ for i := range array {
+ array[i] = i - 1
+ }
+}
+
+func main() {
+ x := val()
+ y := int(uint8(x))
+ f(y) // try and force y to be calculated and spilled
+ if slice[y] != 255 {
+ panic("incorrect value")
+ }
+}