4005 – std.c.stdlib.exit in CTFE and more

What's the right behaviour for this program? I think the CTFE has to stop, but dmd v2.042 doesn't stop to me:
import std.c.stdlib: exit;
int foo() {
 exit(1);
 return 100;
}
static assert(foo() == 100);
void main() {
 assert(foo() == 100);
 exit(1);
}

The bug is quite different: CTFE calls to void functions without source code don't generate any error messages, so they are effectively ignored.

changeset 429

Fixed DMD1.058 and DMD2.043.