Hello Jesse,
For the following code I get the bellow error. I'm wondering if I
should be reporting a bug, or if creating default delegates is
correctly prevented?
.\defltdg.d(10): Error: delegate defltdg.__dgliteral3 is a nested
function and cannot be accessed from main
import std.stdio;
void main() {
take(() {writeln("Hello world");});
take(() {});
take();
}
void take(void delegate() dg = () {}) {
dg();
}
I don't know if this is a bug or what but I think this happens because the
default is defined (compile time) in the scope of take but generated (run
time) in the scope of main.
I'd be fine with a special case for this that either 1) allows a delegate
that doesn't access any outer scope to be generated like that or 2) special
case the code gen to correctly generate the delegate for the function (the
new frame pointer can be computed at that point)
work around:
void take() { take(() {});}
void take(void delegate() dg) { dg(); }
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