https://issues.dlang.org/show_bug.cgi?id=17863
--- Comment #1 from anonymous4 <[email protected]> --- Error: template f2 cannot deduce function from argument types !()(int), candidates are: f2(T)(immutable T a) Error: template f3 cannot deduce function from argument types !()(int), candidates are: f3(T)(shared T a) --
