Bug 3622 – Nested structs as default function arguments not initialized

Strangely enough it happens only if the nested struct is forward referenced. Looks like the default argument is not initialized at all in these cases. Testcase (should pass): struct Strukt { int pole; Wsk wsk; this(int pole, Wsk wsk = Wsk()) { this.pole = pole; this.wsk = wsk; } static Wsk zla_funkcja(uint i, Wsk wsk = Wsk()) { return wsk; } struct Wsk { Strukt* w; } static Wsk funkcja(uint i, Wsk wsk = Wsk()) { return wsk; } } void main() { auto ok = Strukt.funkcja(7); assert(!ok.w); // passes auto zly = Strukt.zla_funkcja(7); assert(!zly.w); // boom! auto s = Strukt(6); assert (!s.wsk.w); // boom! }

Fixed DMD2.038.