<system_error> enums

Visual Studio 2015
 

The new home for Visual Studio documentation is Visual Studio 2017 Documentation on docs.microsoft.com.

The latest version of this topic can be found at <system_error> enums.

errc Enumeration](#errc_enumeration)|io_errc Enumeration|

Provides symbolic names for all the error-code macros defined by Posix in <errno.h>.

class errc { 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_synbolic_link_levels = ELOOP, value_too_large = EOVERFLOW, wrong_protocol_type = EPROTOTYPE, };

Remarks

Provides symbolic names for the error conditions in <iostream>. Can be used to create error_condition objects to be compared with the value that's returned by the ios_base::failurecode() function.

class io_errc { stream = 1 };

Remarks

Both std::make_error_code() and std::make_error_condition() are overloaded for this enum.

ios_base::failure can contain categories of error codes other than error_condition.

Example

C++
Copy 
  
// io_errc.cpp  
// cl.exe /nologo /W4 /EHsc /MTd  
  
#include <iostream>       
  
using namespace std;  
  
int main()  
{  
    cin.exceptions(ios::failbit | ios::badbit);  
  
    try {  
        cin.rdbuf(nullptr); // throws io_errc::stream  
    }  
    catch (ios::failure& e) {  
        cerr << "ios failure caught: ";  
        if (e.code() == make_error_condition(io_errc::stream)) {  
            cerr << "io_errc stream error condition" << endl;  
        }  
        else {  
            cerr << "unmatched error condition code " << e.code() << endl;  
        }  
    }  
}

<system_error>

Show: