readability-duplicate-include¶
Looks for duplicate includes and removes them. The check maintains a list of included files and looks for duplicates. If a macro is defined or undefined then the list of included files is cleared.
Examples:
#include <memory>
#include <vector>
#include <memory>
becomes
#include <memory>
#include <vector>
Because of the intervening macro definitions, this code remains unchanged:
#undef NDEBUG
#include "assertion.h"
// ...code with assertions enabled
#define NDEBUG
#include "assertion.h"
// ...code with assertions disabled