NAME¶

std::errc - std::errc

Synopsis¶

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

Non-member functions¶

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

Helper classes¶

extends the type trait
is_error_condition_enum<std::errc> std::is_error_condition_enum to identify
(C++11) std::errc values as error conditions
(function template)

Example¶

// Run this code

#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';
}
}

Possible output:¶

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

See also¶

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