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std::errc

Defined in header `<system_error>`
enum class errc;		(since C++11)

The scoped enumeration std::errc defines the values of portable error conditions that correspond to the POSIX error codes.

Member constants

Constant	Explanation
`address_family_not_supported`	error condition corresponding to POSIX code EAFNOSUPPORT
`address_in_use`	error condition corresponding to POSIX code EADDRINUSE
`address_not_available`	error condition corresponding to POSIX code EADDRNOTAVAIL
`already_connected`	error condition corresponding to POSIX code EISCONN
`argument_list_too_long`	error condition corresponding to POSIX code E2BIG
`argument_out_of_domain`	error condition corresponding to POSIX code EDOM
`bad_address`	error condition corresponding to POSIX code EFAULT
`bad_file_descriptor`	error condition corresponding to POSIX code EBADF
`bad_message`	error condition corresponding to POSIX code EBADMSG
`broken_pipe`	error condition corresponding to POSIX code EPIPE
`connection_aborted`	error condition corresponding to POSIX code ECONNABORTED
`connection_already_in_progress`	error condition corresponding to POSIX code EALREADY
`connection_refused`	error condition corresponding to POSIX code ECONNREFUSED
`connection_reset`	error condition corresponding to POSIX code ECONNRESET
`cross_device_link`	error condition corresponding to POSIX code EXDEV
`destination_address_required`	error condition corresponding to POSIX code EDESTADDRREQ
`device_or_resource_busy`	error condition corresponding to POSIX code EBUSY
`directory_not_empty`	error condition corresponding to POSIX code ENOTEMPTY
`executable_format_error`	error condition corresponding to POSIX code ENOEXEC
`file_exists`	error condition corresponding to POSIX code EEXIST
`file_too_large`	error condition corresponding to POSIX code EFBIG
`filename_too_long`	error condition corresponding to POSIX code ENAMETOOLONG
`function_not_supported`	error condition corresponding to POSIX code ENOSYS
`host_unreachable`	error condition corresponding to POSIX code EHOSTUNREACH
`identifier_removed`	error condition corresponding to POSIX code EIDRM
`illegal_byte_sequence`	error condition corresponding to POSIX code EILSEQ
`inappropriate_io_control_operation`	error condition corresponding to POSIX code ENOTTY
`interrupted`	error condition corresponding to POSIX code EINTR
`invalid_argument`	error condition corresponding to POSIX code EINVAL
`invalid_seek`	error condition corresponding to POSIX code ESPIPE
`io_error`	error condition corresponding to POSIX code EIO
`is_a_directory`	error condition corresponding to POSIX code EISDIR
`message_size`	error condition corresponding to POSIX code EMSGSIZE
`network_down`	error condition corresponding to POSIX code ENETDOWN
`network_reset`	error condition corresponding to POSIX code ENETRESET
`network_unreachable`	error condition corresponding to POSIX code ENETUNREACH
`no_buffer_space`	error condition corresponding to POSIX code ENOBUFS
`no_child_process`	error condition corresponding to POSIX code ECHILD
`no_link`	error condition corresponding to POSIX code ENOLINK
`no_lock_available`	error condition corresponding to POSIX code ENOLCK
`no_message_available`	error condition corresponding to POSIX code ENODATA
`no_message`	error condition corresponding to POSIX code ENOMSG
`no_protocol_option`	error condition corresponding to POSIX code ENOPROTOOPT
`no_space_on_device`	error condition corresponding to POSIX code ENOSPC
`no_stream_resources`	error condition corresponding to POSIX code ENOSR
`no_such_device_or_address`	error condition corresponding to POSIX code ENXIO
`no_such_device`	error condition corresponding to POSIX code ENODEV
`no_such_file_or_directory`	error condition corresponding to POSIX code ENOENT
`no_such_process`	error condition corresponding to POSIX code ESRCH
`not_a_directory`	error condition corresponding to POSIX code ENOTDIR
`not_a_socket`	error condition corresponding to POSIX code ENOTSOCK
`not_a_stream`	error condition corresponding to POSIX code ENOSTR
`not_connected`	error condition corresponding to POSIX code ENOTCONN
`not_enough_memory`	error condition corresponding to POSIX code ENOMEM
`not_supported`	error condition corresponding to POSIX code ENOTSUP
`operation_canceled`	error condition corresponding to POSIX code ECANCELED
`operation_in_progress`	error condition corresponding to POSIX code EINPROGRESS
`operation_not_permitted`	error condition corresponding to POSIX code EPERM
`operation_not_supported`	error condition corresponding to POSIX code EOPNOTSUPP
`operation_would_block`	error condition corresponding to POSIX code EWOULDBLOCK
`owner_dead`	error condition corresponding to POSIX code EOWNERDEAD
`permission_denied`	error condition corresponding to POSIX code EACCES
`protocol_error`	error condition corresponding to POSIX code EPROTO
`protocol_not_supported`	error condition corresponding to POSIX code EPROTONOSUPPORT
`read_only_file_system`	error condition corresponding to POSIX code EROFS
`resource_deadlock_would_occur`	error condition corresponding to POSIX code EDEADLK
`resource_unavailable_try_again`	error condition corresponding to POSIX code EAGAIN
`result_out_of_range`	error condition corresponding to POSIX code ERANGE
`state_not_recoverable`	error condition corresponding to POSIX code ENOTRECOVERABLE
`stream_timeout`	error condition corresponding to POSIX code ETIME
`text_file_busy`	error condition corresponding to POSIX code ETXTBSY
`timed_out`	error condition corresponding to POSIX code ETIMEDOUT
`too_many_files_open_in_system`	error condition corresponding to POSIX code ENFILE
`too_many_files_open`	error condition corresponding to POSIX code EMFILE
`too_many_links`	error condition corresponding to POSIX code EMLINK
`too_many_symbolic_link_levels`	error condition corresponding to POSIX code ELOOP
`value_too_large`	error condition corresponding to POSIX code EOVERFLOW
`wrong_protocol_type`	error condition corresponding to POSIX code EPROTOTYPE

Non-member functions

make_error_code(std::errc) (C++11)	constructs an `std::errc` error code (function)
make_error_condition(std::errc) (C++11)	constructs an `std::errc` error condition (function)

Helper classes

is_error_condition_enum<std::errc>

(C++11)

extends the type trait std::is_error_condition_enum to identify the the std::errc values as error conditions
(function template)

Example

#include <iostream>
#include <system_error>
#include <thread>
int main()
{
    try {
        std::thread().detach(); // detaching a not-a-thread
    } catch (const std::system_error& e) {
        std::cout << "Caught a system_error\n";
        if(e.code() == std::errc::invalid_argument)
            std::cout << "The error condition is std::errc::invalid_argument\n";
        std::cout << "the error description is " << e.what() << '\n';
    }
}

Output:

Caught a system_error
The error condition is std::errc::invalid_argument
the error description is Invalid argument

error_code (C++11)	holds a platform-dependent error code (class)
error_condition (C++11)	holds a portable error code (class)

std::errc

Member constants

Non-member functions

Helper classes

Example

See also