This may not be significant at all, but nevertheless, I found that compiling TheIDE with CLANG on Linux Mint gives one warning:
/home/tom/upp.src/uppsrc/ide/LayDes/LayDes.h:485:17: warning: 'Serialize' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
void Serialize(Stream& s);
^
/home/tom/upp.src/uppsrc/CtrlCore/CtrlCore.h:805:17: note: overridden virtual function is here
virtual void Serialize(Stream& s);
^
This is 13065 compiled with CLANG 6.0.0, the default on Linux Mint 19.1 Cinnamon x86_64.