CppCheck appears to hang when nlohmann/json.hpp is included

[MarkP]

I am using CppCheck version 3.13.4 and have found that it has started to hang since I started using the nlohmann JSON library in my code.

The following file demonstrates the issue:

 #include <nlohmann/json.hpp>

int NLohmanTest() {
    return 0;
}

My comamnd line for building it is:

cppcheck --xml --xml-version=2 --suppress=missingInclude 
      --suppress=missingIncludeSystem --suppress=unusedFunction 
      --suppress=unmatchedSuppression --suppress=functionStatic 
     --suppress=funcArgNamesDifferent --suppress=*:*_deps/* 
     --enable=all --debug --verbose --debug-warnings --report-progress 
     --showtime=file --inline-suppr --inconclusive 
     --config-exclude=build/Ubuntu-x64/_deps/ 
      simple-test.cpp -I build/Ubuntu-x64/_deps/nlohmann_json-src/include/

This shows that the file is being compiled multiple times with different options, e.g

Checking Common/src/simple-test.cpp: JSON_ASSERT...
Checking Common/src/simple-test.cpp: JSON_CATCH_USER...
Checking Common/src/simple-test.cpp: JSON_DIAGNOSTICS...
Checking Common/src/simple-test.cpp: JSON_HAS_CPP_11;JSON_HAS_CPP_14;JSON_HAS_CPP_17;JSON_HAS_CPP_20...
Checking Common/src/simple-test.cpp: JSON_HAS_CPP_11;JSON_HAS_CPP_14;JSON_HAS_CPP_17;JSON_HAS_CPP_20;_HAS_CXX14...
Checking Common/src/simple-test.cpp: JSON_HAS_CPP_11;JSON_HAS_CPP_14;JSON_HAS_CPP_17;JSON_HAS_CPP_20;_HAS_CXX17...
Checking Common/src/simple-test.cpp: JSON_HAS_CPP_11;JSON_HAS_CPP_14;JSON_HAS_CPP_17;JSON_HAS_CPP_20;_MSVC_LANG...
Checking Common/src/simple-test.cpp: JSON_HAS_CPP_17...
Checking Common/src/simple-test.cpp: JSON_HEDLEY_ALWAYS_INLINE;JSON_HEDLEY_VERSION...
Checking Common/src/simple-test.cpp: JSON_HEDLEY_ARM_VERSION;JSON_HEDLEY_VERSION...
Checking Common/src/simple-test.cpp: JSON_HEDLEY_ARM_VERSION_CHECK;JSON_HEDLEY_VERSION...
Checking Common/src/simple-test.cpp: JSON_HEDLEY_ARRAY_PARAM;JSON_HEDLEY_VERSION...
Checking Common/src/simple-test.cpp: JSON_HEDLEY_ASSUME;JSON_HEDLEY_VERSION...
Checking Common/src/simple-test.cpp: JSON_HEDLEY_BEGIN_C_DECLS;JSON_HEDLEY_VERSION...
Checking Common/src/simple-test.cpp: JSON_HEDLEY_CLANG_HAS_ATTRIBUTE;JSON_HEDLEY_VERSION...
Checking Common/src/simple-test.cpp: JSON_HEDLEY_CLANG_HAS_BUILTIN;JSON_HEDLEY_VERSION...
Checking Common/src/simple-test.cpp: JSON_HEDLEY_CLANG_HAS_CPP_ATTRIBUTE;JSON_HEDLEY_VERSION...
Checking Common/src/simple-test.cpp: JSON_HEDLEY_CLANG_HAS_DECLSPEC_DECLSPEC_ATTRIBUTE;JSON_HEDLEY_VERSION...
Checking Common/src/simple-test.cpp: JSON_HEDLEY_CLANG_HAS_EXTENSION;JSON_HEDLEY_VERSION...

how can I prevent this?

[MarkP]

turns out that adding

     --config-exclude=build/Ubuntu-x64/_deps/ 

Appears to fix it ...

is there a way to use a 'simplified' path as the _deps directory is normally created by cmake which depends on teh build config?

something like:

     --config-exclude=**_deps/