Is the size of a pointer value 32 bits or 64 bits in golang when build with
`GOARCH=amd64` option specified and running on 64-bit OS?
If it's 64-bit size, is a global pointer value 8-byte aligned in memory so
that a read or write operation of that pointer value is carried out
atomically?
For example, in the following code, is it possible that the global pointer
p is only partially updated when the read goroutine read the pointer?
var p *int
void main() {
i := 1
p = &i
go func() { fmt.Println(*p) } ()
}
The scenario I'm concerning is that there is only one write but multiple
reads on a global pointer value, and reading of an old value of the pointer
is not important. Thanks in advance!
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