On Thursday, 19 November 2020 at 00:07:12 UTC, Dibyendu Majumdar
wrote:
I have simple test program:
import core.stdc.stdio : printf;
void test() {
int* a;
printf("a == null %d\n", a == null);
}
int function() fp = test;
extern (C) void main() {
fp();
}
Why do I get:
\d\dmd-2.092.1\windows\bin64\dmd.exe -betterC tests.d
tests.d(5): Error: printf cannot be interpreted at compile
time, because it has no available source code
This is on Windows
IMO another problem here is that `function` and `delegate` are
special cases of the `*` postfix. With a syntax like
int()* fp = test
it would be more obvious to new comers that `&` is missing.
This is a syntax I experiment in STYX for example [1].
Note that then there's also the problem with functions pointers
requiring a context. This context is not necessarily a `this`
(for closures it's a frame obviously).
[1]
https://gitlab.com/basile.b/styx/-/blob/master/tests/backend/function_pointers.sx#L10
