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-rw-r--r--test/zerosize.go33
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diff --git a/test/zerosize.go b/test/zerosize.go
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+++ b/test/zerosize.go
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+// run
+
+// Copyright 2023 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 that zero-sized variables get same address as
+// runtime.zerobase.
+
+package main
+
+var x, y [0]int
+var p, q = new([0]int), new([0]int) // should get &runtime.zerobase
+
+func main() {
+ if &x != &y {
+ // Failing for now. x and y are at same address, but compiler optimizes &x==&y to false. Skip.
+ // print("&x=", &x, " &y=", &y, " &x==&y = ", &x==&y, "\n")
+ // panic("FAIL")
+ }
+ if p != q {
+ print("p=", p, " q=", q, " p==q = ", p==q, "\n")
+ panic("FAIL")
+ }
+ if &x != p {
+ print("&x=", &x, " p=", p, " &x==p = ", &x==p, "\n")
+ panic("FAIL")
+ }
+ if &y != p {
+ print("&y=", &y, " p=", p, " &y==p = ", &y==p, "\n")
+ panic("FAIL")
+ }
+}