• protoc poc.proto -cpp_out=.
• mkdir build
• cd build
• CC=clang CXX=clang++ cmake -DCMAKE_BUILD_TYPE=Debug ..
• make
• ./tester

• See valgrind.out, gdb.out for summaries.
• Running armv7a-unknown-linux-gnueabihf on cubieboard2 (sunxi A20)
• System compiled with Gentoo gcc-9.3.0-r2
• Program is compiled with clang/llvm 11.0.1
• This bug is triggered after upgrading from protobuf-3.13.0 to 3.14.0