1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
|
// run -gcflags=-d=ssa/check/on
// Copyright 2019 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.
// As of 2019-06, bug affects/ed amd64 and s390x.
package main
var foo = []byte{105, 57, 172, 152}
func main() {
for i := 0; i < len(foo); i += 4 {
// Requires inlining and non-constant i
// Note the bug/fix also apply to different widths, but was unable to reproduce for those.
println(readLittleEndian32_2(foo[i], foo[i+1], foo[i+2], foo[i+3]))
}
}
func readLittleEndian32_2(a, b, c, d byte) uint32 {
return uint32(a) | (uint32(b) << 8) | (uint32(c) << 16) | (uint32(d) << 24)
}
|
