Yes, thank you very much for clarifying!
Yes, I see, it seems, a problem with the compiler.
Precisely, for certain with the compiler some problems.
So I'll try to compile gcc-6.3.0.
If I understand correctly, I will need to compile it using msys, surely it.
Msys I have, but I've never, before any successful compilation of it, never before complex
Never before did compilation fail.
I now measure, in general, this problem.