fn wcscpy(noalias dst: [*]wchar_t, noalias src: [*:0]const wchar_t) callconv(.c) [*]wchar_t
fn wcscpy(noalias dst: [*]wchar_t, noalias src: [*:0]const wchar_t) callconv(.c) [*]wchar_t { _ = wcpcpy(dst, src); return dst; }