On Monday, 19 October 2015 at 19:53:14 UTC, Andrei Alexandrescu
wrote:
struct A {
int[] x = new int[10];
}
void main() {
import std.stdio;
A a;
a.x[1] = 42;
writeln(a.x);
}
Looks like a bona fide runtime array to me.
It is still in the static data segment. Try this:
struct A {
int[] x = new int[10];
}
void main() {
import std.stdio;
A a;
a.x[1] = 42;
writeln(a.x);
A a2;
writeln(a2.x);
assert(a.ptr is a2.ptr); // passes
}
The `new int[10]` is done at compile time and the pointer it
produces is put into the .init for the struct. So the same
pointer gets blitted over to ALL instances of `A`, meaning they
alias the same data (until the slice gets reallocated by append
or whatever).
