20 lines · plain
1.. title:: clang-tidy - misc-unused-using-decls2 3misc-unused-using-decls4=======================5 6Finds unused ``using`` declarations.7 8Unused ``using`` declarations in header files will not be diagnosed9since these using declarations are part of the header's public API.10Allowed header file extensions can be configured via the global11option `HeaderFileExtensions`.12 13Example:14 15.. code-block:: c++16 17 // main.cpp18 namespace n { class C; }19 using n::C; // Never actually used.20