Novo wrote on Wed, 06 April 2022 13:34

And Upp should be tested against all versions of C++ because old code often doesn't compile with new versions of C++.

TheIDE cannot be compiled with C++20.
Clang + -std=c++20

/home/ssg/dvlp/cpp/code/upp/git/uppsrc/CtrlCore/CtrlPos.cpp:152:11: error: use of overloaded operator '!=' is ambiguous (with operand types 'Upp::Rect' (aka 'Rec
    t_<int>') and 'Upp::Rect16' (aka 'Rect_<short>'))
                if(view != f.view) {
                   ~~~~ ^  ~~~~~~
/home/ssg/dvlp/cpp/code/upp/git/uppsrc/Core/Gtypes.h:337:9: note: candidate function
        bool   operator!=(const Rect_& b) const                 { return !operator==(b); }
               ^
/home/ssg/dvlp/cpp/code/upp/git/uppsrc/Core/Gtypes.h:336:9: note: candidate function
        bool   operator==(const Rect_& b) const;
               ^
/home/ssg/dvlp/cpp/code/upp/git/uppsrc/Core/Gtypes.h:336:9: note: candidate function (with reversed parameter order)

IMHO, this should be fixed.