std::errc

 

C++

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Technical Specifications

 

Utilities library

Type support (basic types, RTTI, type traits)

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initializer_list (C++11)

bitset

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rel_ops::operator!=rel_ops::operator>rel_ops::operator<=rel_ops::operator>=

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optional (C++17)

any (C++17)

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swap

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declval (C++11)

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Error handling

Exception handling exception uncaught_exceptionuncaught_exceptions (C++17) exception_ptr (C++11) make_exception_ptr (C++11) current_exception (C++11) rethrow_exception (C++11) nested_exception (C++11) throw_with_nested (C++11) rethrow_if_nested (C++11) exception_list (C++17) Exception handling failures terminate terminate_handler get_terminate (C++11) set_terminate unexpected (deprecated) bad_exception unexpected_handler (deprecated) get_unexpected (C++11)(deprecated) set_unexpected (deprecated)

Exception categories logic_error invalid_argument domain_error length_error out_of_range runtime_error range_error overflow_error underflow_error Error codes Error codes errno Assertions assert system_error facility error_category (C++11) generic_category (C++11) system_category (C++11) error_condition (C++11) errc (C++11) error_code (C++11) system_error (C++11)

 

std::errc

Non-member functions

make_error_code

make_error_condition

Helper classes

is_error_condition_enum

 

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

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';
    }
}

Output:

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

See also

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