mirror of
https://github.com/golang/go
synced 2024-09-06 00:19:45 +00:00
![Cherry Mui](/assets/img/avatar_default.png)
Put zero-sized data symbols at same address as runtime.zerobase, so zero-sized global variables have the same address as zero-sized allocations. Change-Id: Ib3145dc1b663a9794dfabc0e6abd2384960f2c49 Reviewed-on: https://go-review.googlesource.com/c/go/+/490435 Run-TryBot: Cherry Mui <cherryyz@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Russ Cox <rsc@golang.org>
34 lines
814 B
Go
34 lines
814 B
Go
// 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")
|
|
}
|
|
}
|