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-rw-r--r--test/fixedbugs/issue41239.go19
1 files changed, 19 insertions, 0 deletions
diff --git a/test/fixedbugs/issue41239.go b/test/fixedbugs/issue41239.go
new file mode 100644
index 0000000..3e9ef5e
--- /dev/null
+++ b/test/fixedbugs/issue41239.go
@@ -0,0 +1,19 @@
+// run
+
+// Copyright 2020 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 "fmt"
+
+func main() {
+ const N = 1024
+ var a [N]int
+ x := cap(append(a[:N-1:N], 9, 9))
+ y := cap(append(a[:N:N], 9))
+ if x != y {
+ panic(fmt.Sprintf("different capacity on append: %d vs %d", x, y))
+ }
+}