directory_iterator& operator++(); directory_iterator& increment( std::error_code& ec ); | (since C++17) |
Advances the iterator to the next entry. Invalidates all copies of the previous value of *this
.
ec | - | error code to store error status to |
*this
.
The overload that does not take a std::error_code&
parameter throws filesystem_error
on underlying OS API errors, constructed with 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.
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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