File: zerosize.go

package info (click to toggle)
golang-1.24 1.24.2-2
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 168,184 kB
  • sloc: asm: 154,896; ansic: 7,009; sh: 2,226; javascript: 1,705; perl: 1,052; python: 421; makefile: 103; cpp: 39; f90: 8; awk: 7; objc: 4
file content (25 lines) | stat: -rw-r--r-- 650 bytes parent folder | download | duplicates (19)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
// asmcheck

// Copyright 2018 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.

// Make sure a pointer variable and a zero-sized variable
// aren't allocated to the same stack slot.
// See issue 24993.

package codegen

func zeroSize() {
	c := make(chan struct{})
	// amd64:`MOVQ\t\$0, command-line-arguments\.s\+56\(SP\)`
	var s *int
	// force s to be a stack object, also use some (fixed) stack space
	g(&s, 1, 2, 3, 4, 5)

	// amd64:`LEAQ\tcommand-line-arguments\..*\+55\(SP\)`
	c <- struct{}{}
}

//go:noinline
func g(**int, int, int, int, int, int) {}