You are declaring the constructor, but not defining it, i.e. you're
telling the compiler that it's in some other compilation unit.
The compiler won't complain, but the linker will.
If you replace:
private this();
with:
private this() {}
it should work.
A.
On 1/24/19 1:48 PM, JN wrote:
I expected that too, but it doesn't even work in the same module.
class Foo
{
private this();
static Foo makeFoo()
{
Foo f = new Foo();
return f;
}
}
void main() {
}
fails with:
onlineapp.o:onlineapp.d:_D9onlineapp3Foo7__ClassZ: error: undefined
reference to '_D9onlineapp3Foo6__ctorMFZCQzQr'
onlineapp.d:7: error: undefined reference to
'_D9onlineapp3Foo6__ctorMFZCQzQr'
collect2: error: ld returned 1 exit status
Error: linker exited with status 1
I don't understand why is this a linker problem. My understanding is
that for some reason static methods don't have access to the private
constructor (they're not considered same module?). But even though, it
should error with something like "Foo.makeFoo() cannot access private
Foo.this()" rather than fail at linking.
