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Language

C++

Compiler

clang HEAD 12.0.0 (https://github.com/llvm/llvm-project.git 344a3d0bc0fb0868b519c3342b4982d6121eece3)

Options
Warnings
Boost 1.73.0
C++2a
no pedantic

$ clang++ prog.cc -Wall -Wextra -I/opt/wandbox/boost-1.73.0/clang-head/include -std=c++2a 
prog.cc:11:9: warning: 'D::func' hides overloaded virtual function [-Woverloaded-virtual]
   void func(int);   // C4263
        ^
prog.cc:7:17: note: hidden overloaded virtual function 'B::func' declared here: different number of parameters (0 vs 1)
   virtual void func();
                ^
1 warning generated.
Exit Code:
0