dmd checks escaping pointers of a constructor by fake assigning arguments to `this`, but it stops at the first non pointer argument.
```
bool checkConstructorEscape() {
// ...
    /* Attempt to assign each `return` arg to the `this` reference
     */
    foreach (const i; 0 .. n)
    {
        Expression arg = (*ce.arguments)[i];
        if (!arg.type.hasPointers())
            return false; // < EARLY EXIT
```

This means you can escape scope pointers like this:
```
@safe:
struct S 
{
    int* p;
    
    this(int dummy, return scope int* p) 
    {
        this.p = p;
    }
}

int* escape()
{
    int x;
    auto s = S(0, &x);
    return s.p;
}
```