SOLVED Mac build fails, PC build OK

I have converted an R16-R19 plugin to R20 on PC.
After resolving all compiler issues. I copy the adjusted source files, res files to Mac.
There the build reports

No viable conversion from 'maxon::Bool' (aka 'bool') to 'Result<void>'

and this for line 2286 in apibase.h

Result<void> res = dst.CopyFrom(src);

It seems related to a class I provided, disallowing copy and assign. And for which I have provided a CopyFrom method.
Strangly enough, I have provided

class MyObject
{
MAXON_DISALLOW_COPY_AND_ASSIGN(MyObject);

public:
...
maxon::Bool CopyFrom(const MyObject& src);

A return type of maxon::Bool, which is also mentioned in the Code Style Guide point 9.6.

while the R19 documentation indicates

MAXON_WARN_UNUSED Result<void> CopyFrom(const Example1& src)

Looking at my code, it seems I got it wrong.
The R16-R19 implementation uses a Bool as return type, while it should be a Result<void>, still all compiles fine, and runs fine as well. (both PC and Mac)
The R20 implementation uses a Bool, which should be OK according to the documentation, compiles fine on PC but that fails to compile on Mac.

EDIT:
The R20 SDK example (Move/Copy Constructors) also contains:

maxon::Result<void> CopyFrom(const Example3& src)

I am confused

Think I got it resolved.
Seems the correct implementation should indeed be

maxon::Result<void> CopyFrom(const Example3& src)

as the arraytutorial.cpp and movecopyconstructor.cpp examples from the R20 SDK indicate.

Please update the Code Style Guide point 9.6 to show the correct way to go for a CopyFrom.
Thanks for watching.

I had a "deja vu" moment, and indeed ... seems I already once hit that same wall here

Funny that Visual Studio never once complained about the maxon::Bool CopyFrom.

Bringing this back to the attention, as it might have been lost during the holiday period.

The Code Style Guide (section 9.6) shows

class Test
{
  MAXON_DISALLOW_COPY_AND_ASSIGN(Test)
private:
  Int _value[5];
};
class Test
{
  MAXON_DISALLOW_COPY_AND_ASSIGN(Test)
public:
  Bool CopyFrom(const Test& source);
private:
  Int _value[5];
};

where the CopyFrom should actually not return a Bool but a maxon::Result<void>.

This is probably due to the Docs have not been updated in this regard.
maxon::Result<> is indeed correct. You can look it up here: https://developers.maxon.net/docs/Cinema4DCPPSDK/html/page_maxonapi_transition.html#page_maxonapi_transition_code_error

@mp5gosu
I know, that's why I mention it again ... to please update the Code Style code snippet.

Hi,

we are sorry, you ran into this issue, especially as our guide seems to have led you on a wrong path. And I apologize, we (although I'd rather blame the bearded guy with red coat) obviously did miss your post. Sorry!
We'll see to get the code style guide updated.

Cheers,
Andreas

@a_block
No need for apologies.
I thought the bearded guy had something to do with it ...
Hence the reason I posted the message again. Luckily, JIT before the easter bunny was to blame.