[Windows] Build errors: warning C4702: unreachable code

[seanyen]

Anyone hit this issue too?

-- The C compiler identification is MSVC 19.26.28806.0
-- The CXX compiler identification is MSVC 19.26.28806.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/MSVC/14.26.28801/bin/Hostx64/x64/cl.exe - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/MSVC/14.26.28801/bin/Hostx64/x64/cl.exe - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found boost::coroutine2.
-- Looking for pthread.h
-- Looking for pthread.h - not found
-- Found Threads: TRUE  
-- Could NOT find ZMQ (missing: ZMQ_LIBRARIES) 
CMake Warning at CMakeLists.txt:61 (message):
  ZeroMQ NOT found.  Skipping the build of [PublisherZMQ] and [bt_recorder].


-- Found PythonInterp: C:/opt/ros/foxy/x64/python.exe (found suitable version "3.8.3", minimum required is "3") 
-- Using PYTHON_EXECUTABLE: C:/opt/ros/foxy/x64/python.exe
-- ------------------------------------------
-- BehaviourTree is being built using AMENT.
-- ------------------------------------------
-- BEHAVIOR_TREE_LIB_DESTINATION:   lib 
-- BEHAVIOR_TREE_BIN_DESTINATION:   bin 
-- CMAKE_RUNTIME_OUTPUT_DIRECTORY:   
-- CMAKE_LIBRARY_OUTPUT_DIRECTORY:   
-- CMAKE_ARCHIVE_OUTPUT_DIRECTORY:   
-- Configuring done
-- Generating done
-- Build files have been written to: C:/workspace/nav2_rel_ws/build/behaviortree_cpp_v3
Microsoft (R) Build Engine version 16.6.0+5ff7b0c9e for .NET Framework
Copyright (C) Microsoft Corporation. All rights reserved.

  Checking Build System
  Building Custom Rule C:/workspace/nav2_rel_ws/src/BehaviorTree.CPP/CMakeLists.txt
  action_node.cpp
  basic_types.cpp
  behavior_tree.cpp
  blackboard.cpp
  bt_factory.cpp
  decorator_node.cpp
  condition_node.cpp
  control_node.cpp
  shared_library.cpp
  tree_node.cpp
  xml_parsing.cpp
  inverter_node.cpp
  repeat_node.cpp
  retry_node.cpp
  subtree_node.cpp
  timeout_node.cpp
  if_then_else_node.cpp
  fallback_node.cpp
  parallel_node.cpp
  reactive_sequence.cpp
  reactive_fallback.cpp
  sequence_node.cpp
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): error C2220: the following warning is treated as an error [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): warning C4702: unreachable code [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): warning C4702: unreachable code [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): warning C4702: unreachable code [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): error C2220: the following warning is treated as an error [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): error C2220: the following warning is treated as an error [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): error C2220: the following warning is treated as an error [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): warning C4702: unreachable code [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): warning C4702: unreachable code [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): warning C4702: unreachable code [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]
  sequence_star_node.cpp
  switch_node.cpp
  while_do_else_node.cpp
  bt_cout_logger.cpp
  bt_file_logger.cpp
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): error C2220: the following warning is treated as an error [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): error C2220: the following warning is treated as an error [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): warning C4702: unreachable code [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): warning C4702: unreachable code [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): warning C4702: unreachable code [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): warning C4702: unreachable code [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): warning C4702: unreachable code [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): error C2220: the following warning is treated as an error [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): error C2220: the following warning is treated as an error [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): warning C4702: unreachable code [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): warning C4702: unreachable code [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): warning C4702: unreachable code [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]
  bt_minitrace_logger.cpp
  tinyxml2.cpp
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): error C2220: the following warning is treated as an error [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): error C2220: the following warning is treated as an error [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): warning C4702: unreachable code [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): warning C4702: unreachable code [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): warning C4702: unreachable code [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]
  minitrace.cpp
  shared_library_WIN.cpp
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): error C2220: the following warning is treated as an error [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]
C:\workspace\nav2_rel_ws\src\BehaviorTree.CPP\include\behaviortree_cpp_v3\utils\expected.hpp(1273): warning C4702: unreachable code [C:\workspace\nav2_rel_ws\build\behaviortree_cpp_v3\behaviortree_cpp_v3.vcxproj]

[facontidavide]

this is a 3rd party library. the only thing I can do is to decrease the warning level to W3. Done