golang issue43099 代码
文件路径：/test/fixedbugs/issue43099.go
/ compile
/ Copyright 2020 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.
/ Check to make sure we don't try to constant fold a divide by zero.
/ This is a tricky test, as we need a value that's not recognized as 0
/ until lowering (otherwise it gets handled in a different path).
package p
func f() {
var i int
var s string
for i > 0 {
_ = s[0]
i++
}
var c chan int
c <- 1 % i
}
func f32() uint32 {
s := "\x00\x00\x00\x00"
c := uint32(s[0]) | uint32(s[1])<<8 | uint32(s[2])<<16 | uint32(s[3])<<24
return 1 / c
}
func f64() uint64 {
s := "\x00\x00\x00\x00\x00\x00\x00\x00"
c := uint64(s[0]) | uint64(s[1])<<8 | uint64(s[2])<<16 | uint64(s[3])<<24 | uint64(s[4])<<32 | uint64(s[5])<<40 | uint64(s[6])<<48 | uint64(s[7])<<56
return 1 / c
}