# std::filesystem::recursive_directory_iterator::recursive_directory_iterator

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< cpp‎ | filesystem‎ | recursive directory iterator

recursive_directory_iterator() noexcept; | (1) | (since C++17)
recursive_directory_iterator( const recursive_directory_iterator& rhs ); | (2) | (since C++17)
recursive_directory_iterator( recursive_directory_iterator&& rhs ) noexcept; | (3) | (since C++17)
explicit recursive_directory_iterator( const std::filesystem::path& p ); | (4) | (since C++17)
recursive_directory_iterator( const std::filesystem::path& p, std::filesystem::directory_options options ); | (4) | (since C++17)
recursive_directory_iterator( const std::filesystem::path& p, std::filesystem::directory_options options, std::error_code& ec ); | (5) | (since C++17)
recursive_directory_iterator( const std::filesystem::path& p, std::error_code& ec ); | (6) | (since C++17)

Contructs new recursive directory iterator.

1) Default constructor. Constructs an end iterator.
2) Copy constructor.
3) Move constructor.
4-6) Constructs a iterator that refers to the first entry in the directory that `p` resolves to.

| This section is incomplete Reason: errors

### Parameters

| This section is incomplete

### Exceptions

The overload that does not take a std::error_code& parameter throws `filesystem_error` on underlying OS API errors, constructed with `p` as the first path argument and the OS error code as the error code argument. The overload taking a std::error_code& parameter sets it to the OS API error code if an OS API call fails, and executes ec.clear() if no errors occur. Any overload not marked `noexcept` may throw std::bad_alloc if memory allocation fails.

### Notes

Recursive directory iterators do not follow directory symlinks by default. To enable this behavior, specify `directory_options::follow_directory_symlink` among the `options` option set.

### Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR | Applied to | Behavior as published | Correct behavior
--- | --- | --- | ---
LWG 3013 | C++17 | `error_code` overload marked noexcept but can allocate memory | noexcept removed

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