Wandbox

Ran/Viewed Log

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

Raw compiler options

-Wnon-virtual-dtor

$ clang++ prog.cc -Wall -Wextra -I/opt/wandbox/boost-1.73.0/clang-head/include -std=c++2a -Wnon-virtual-dtor

prog.cc:9:4: warning: 'B' has virtual functions but non-virtual destructor [-Wnon-virtual-dtor]
   ~B();
   ^
1 warning generated.
/tmp/prog-2b3c10.o: In function `main':
prog.cc:(.text+0x16): undefined reference to `B::~B()'
/tmp/prog-2b3c10.o: In function `B::B()':
prog.cc:(.text._ZN1BC2Ev[_ZN1BC2Ev]+0x6): undefined reference to `vtable for B'
clang-12: error: linker command failed with exit code 1 (use -v to see invocation)

Exit Code:

1