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Language

C++

Compiler

clang HEAD 12.0.0 (https://github.com/llvm/llvm-project.git 035396197a5f129c5ec42e9e46a85c32fa1c1b84)

Options
Warnings
Boost 1.73.0
C++2a
no pedantic
Raw compiler options
-Wunreachable-code

$ clang++ prog.cc -Wall -Wextra -I/opt/wandbox/boost-1.73.0/clang-head/include -std=c++2a -Wunreachable-code
prog.cc:7:4: warning: code will never be executed [-Wunreachable-code]
   printf("I won't print.\n");   // C4702 unreachable
   ^~~~~~
1 warning generated.
Exit Code:
1