Bug 14189 – can't declare two identical function prototypes

this code fails to compile: === test.d === void foo (); void foo (); ============== but why? there is nothing wrong with declaring two identical *prototypes*. compiler must forbid declaring two identical function *implementations* (i.e. two functions with same signature and both with body), but there is no sense in forbidding identical prototypes. this also breaks win32 API headers ("oleauto.d", for example). and any other project which declares prototypes more than once. this will not help catching any bugs too, so it seems that this is just a needless restriction.

sorry, that was a bugreport for unmerged PR.