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Suppress unused value warnings #46

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merged 2 commits into from
Jul 2, 2019
Merged

Suppress unused value warnings #46

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35595ef
Remove -Wextra
sharkdp Jul 2, 2019
f49c71f
Suppress -Wunused-value warnings, closes #36
sharkdp Jul 2, 2019
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9 changes: 7 additions & 2 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -10,13 +10,18 @@ target_include_directories(${PROJECT_NAME} INTERFACE ".")

if (DBG_MACRO_ENABLE_TESTS)
add_executable(${PROJECT_NAME}-example tests/example.cpp)
target_compile_options(${PROJECT_NAME}-example PRIVATE -Wall -Wextra -pedantic -DDBG_MACRO_NO_WARNING)
target_compile_options(${PROJECT_NAME}-example PRIVATE -Wall -pedantic -DDBG_MACRO_NO_WARNING)
target_link_libraries(${PROJECT_NAME}-example ${PROJECT_NAME})

add_executable(${PROJECT_NAME}-tests tests/tests.cpp)
target_compile_options(${PROJECT_NAME}-tests PRIVATE -Wall -Wextra -pedantic -DDBG_MACRO_NO_WARNING)
target_compile_options(${PROJECT_NAME}-tests PRIVATE -Wall -pedantic -DDBG_MACRO_NO_WARNING)
target_link_libraries(${PROJECT_NAME}-tests ${PROJECT_NAME})

add_executable(${PROJECT_NAME}-tests-macro_disabled tests/tests.cpp)
target_compile_options(${PROJECT_NAME}-tests-macro_disabled PRIVATE -Wall -pedantic -DDBG_MACRO_NO_WARNING -DDBG_MACRO_DISABLE)
target_link_libraries(${PROJECT_NAME}-tests-macro_disabled ${PROJECT_NAME})

enable_testing()
add_test(${PROJECT_NAME} ${PROJECT_NAME}-tests)
add_test(${PROJECT_NAME}-macro_disabled ${PROJECT_NAME}-tests-macro_disabled)
endif()
8 changes: 7 additions & 1 deletion dbg.h
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Expand Up @@ -411,6 +411,12 @@ class DebugOutput {
static constexpr const char* const ANSI_RESET = "\x1b[0m";
};

// Identity function to suppress "-Wunused-value" warnings in DBG_MACRO_DISABLE mode
template <typename T>
T&& identity(T&& t){
return std::forward<T>(t);
}

} // namespace dbg_macro

#ifndef DBG_MACRO_DISABLE
Expand All @@ -420,7 +426,7 @@ class DebugOutput {
dbg_macro::DebugOutput(__FILE__, __LINE__, __func__, #__VA_ARGS__) \
.print(dbg_macro::type_name<decltype(__VA_ARGS__)>(), (__VA_ARGS__))
#else
#define dbg(...) __VA_ARGS__
#define dbg(...) dbg_macro::identity(__VA_ARGS__)
#endif // DBG_MACRO_DISABLE

#endif // DBG_MACRO_DBG_H