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-rw-r--r--test/fixedbugs/issue47771.go19
1 files changed, 19 insertions, 0 deletions
diff --git a/test/fixedbugs/issue47771.go b/test/fixedbugs/issue47771.go
new file mode 100644
index 0000000..a434bff
--- /dev/null
+++ b/test/fixedbugs/issue47771.go
@@ -0,0 +1,19 @@
+// run
+
+// Copyright 2021 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.
+
+// gofrontend miscompiled some cases of append(s, make(typ, ln)...).
+
+package main
+
+var g int
+
+func main() {
+ a := []*int{&g, &g, &g, &g}
+ a = append(a[:0], make([]*int, len(a) - 1)...)
+ if len(a) != 3 || a[0] != nil || a[1] != nil || a[2] != nil {
+ panic(a)
+ }
+}