Const ref and rvalues again...

[Jonathan M Davis]

On Sunday, November 11, 2012 12:10:59 David Nadlinger wrote:
> On Sunday, 11 November 2012 at 10:09:17 UTC, Jonathan M Davis
> 
> wrote:
> > It still prints "hello", even with full optimations turned on.
> > So, it must be
> > allocating a closure in spite of scope. So, it looks to me like
> > scope is just
> > completely ignored and does absolutely nothing at this point,
> > unless I'm just
> > completely missing something here.
> 
> Try this:
> 
> ---
> import std.stdio;
> 
> void delegate() global;
> 
> void foo(scope void delegate() del)
> {
>       global = del;
> }
> 
> 
> void f()
> {
>       {
>           char[5] bar = "hello";
>           foo((){writeln(bar);});
>       }
> }
> 
> void smashStack() {
>      uint[1000] dummy = 0xbadcab1e;
>      asm { nop; }
> }
> 
> void main()
> {
>       char[7] baz = "goodbye";
>       f();
>       smashStack();
>       global();
> }
> ---

That did it. And if scope is removed, it works again. I clearly don't get the 
low level stuff though, since it's just plain bizarre to me that the previous 
example didn't do it.

- Jonathan M Davis