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Lagom: Add a tool to verify correctness of the LibJS GC
This is implemented as a Clang frontend tool, and currently does two things: - Ensure for all fields wrapped in {Nonnull,}GCPtr<T>, T inherits from JS::Cell - Ensure for all fields not wrapped in {Nonnull,}GCPtr, that the type does not inherit from JS::Cell (otherwise it should be wrapped in a Ptr class). In the future, this tool could be extended further. For example, we may consider validating all implementations of Cell::visit_impl.
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Meta/Lagom/Tools/LibJSGCVerifier/CMakeLists.txt
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Meta/Lagom/Tools/LibJSGCVerifier/CMakeLists.txt
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cmake_minimum_required(VERSION 3.24)
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project(LibJSGCVerifier C CXX)
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find_package(Clang CONFIG REQUIRED HINTS "../../../../Toolchain/Local/clang")
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add_executable(LibJSGCVerifier src/main.cpp src/CellsHandler.cpp)
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target_include_directories(LibJSGCVerifier SYSTEM PRIVATE ${CLANG_INCLUDE_DIRS} ${LLVM_INCLUDE_DIRS})
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target_compile_features(LibJSGCVerifier PRIVATE cxx_std_20)
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target_link_libraries(LibJSGCVerifier PRIVATE clangTooling)
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target_compile_options(LibJSGCVerifier PRIVATE
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-Wall
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-Wextra
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-Werror
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-Wno-unused
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-fno-rtti
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)
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