Is the KeepAlive call in the following example essential? and sufficient?
func ByteSlice2String(bs []byte) (str string) {
sliceHdr := (*reflect.SliceHeader)(unsafe.Pointer(&bs))
strHdr := (*reflect.StringHeader)(unsafe.Pointer(&str))
strHdr.Len = sliceHdr.Len
strHdr.Data = sliceHdr.Data
runtime.KeepAlive(&bs) // is this line essential? is it sufficient?
return
}
On Thursday, March 1, 2018 at 11:29:50 AM UTC-5, di...@veryhaha.com wrote:
>
> For example,
>
> func f(s []byte) {
>
> // Will the the KeepAlive call make sure the underlying bytes
> // of s will not garbage collected for sure?
>
> runtime.KeepAlive(&s)
> }
>
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