tmp/tmpmax9prk9/{from.md → to.md}
RENAMED
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| 1 |
+
### Header `<system_error>` synopsis <a id="system_error.syn">[[system_error.syn]]</a>
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| 2 |
+
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| 3 |
+
``` cpp
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| 4 |
+
namespace std {
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| 5 |
+
class error_category;
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| 6 |
+
const error_category& generic_category() noexcept;
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| 7 |
+
const error_category& system_category() noexcept;
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| 8 |
+
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| 9 |
+
class error_code;
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| 10 |
+
class error_condition;
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| 11 |
+
class system_error;
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| 12 |
+
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| 13 |
+
template <class T>
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+
struct is_error_code_enum : public false_type {};
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| 15 |
+
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| 16 |
+
template <class T>
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| 17 |
+
struct is_error_condition_enum : public false_type {};
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| 18 |
+
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+
enum class errc {
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| 20 |
+
address_family_not_supported, // EAFNOSUPPORT
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| 21 |
+
address_in_use, // EADDRINUSE
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| 22 |
+
address_not_available, // EADDRNOTAVAIL
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| 23 |
+
already_connected, // EISCONN
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| 24 |
+
argument_list_too_long, // E2BIG
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| 25 |
+
argument_out_of_domain, // EDOM
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| 26 |
+
bad_address, // EFAULT
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| 27 |
+
bad_file_descriptor, // EBADF
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| 28 |
+
bad_message, // EBADMSG
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| 29 |
+
broken_pipe, // EPIPE
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| 30 |
+
connection_aborted, // ECONNABORTED
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| 31 |
+
connection_already_in_progress, // EALREADY
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| 32 |
+
connection_refused, // ECONNREFUSED
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| 33 |
+
connection_reset, // ECONNRESET
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| 34 |
+
cross_device_link, // EXDEV
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| 35 |
+
destination_address_required, // EDESTADDRREQ
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| 36 |
+
device_or_resource_busy, // EBUSY
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| 37 |
+
directory_not_empty, // ENOTEMPTY
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| 38 |
+
executable_format_error, // ENOEXEC
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| 39 |
+
file_exists, // EEXIST
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| 40 |
+
file_too_large, // EFBIG
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| 41 |
+
filename_too_long, // ENAMETOOLONG
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| 42 |
+
function_not_supported, // ENOSYS
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| 43 |
+
host_unreachable, // EHOSTUNREACH
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| 44 |
+
identifier_removed, // EIDRM
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| 45 |
+
illegal_byte_sequence, // EILSEQ
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| 46 |
+
inappropriate_io_control_operation, // ENOTTY
|
| 47 |
+
interrupted, // EINTR
|
| 48 |
+
invalid_argument, // EINVAL
|
| 49 |
+
invalid_seek, // ESPIPE
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| 50 |
+
io_error, // EIO
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| 51 |
+
is_a_directory, // EISDIR
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| 52 |
+
message_size, // EMSGSIZE
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| 53 |
+
network_down, // ENETDOWN
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| 54 |
+
network_reset, // ENETRESET
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| 55 |
+
network_unreachable, // ENETUNREACH
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| 56 |
+
no_buffer_space, // ENOBUFS
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| 57 |
+
no_child_process, // ECHILD
|
| 58 |
+
no_link, // ENOLINK
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| 59 |
+
no_lock_available, // ENOLCK
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| 60 |
+
no_message_available, // ENODATA
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| 61 |
+
no_message, // ENOMSG
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| 62 |
+
no_protocol_option, // ENOPROTOOPT
|
| 63 |
+
no_space_on_device, // ENOSPC
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| 64 |
+
no_stream_resources, // ENOSR
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| 65 |
+
no_such_device_or_address, // ENXIO
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| 66 |
+
no_such_device, // ENODEV
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| 67 |
+
no_such_file_or_directory, // ENOENT
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| 68 |
+
no_such_process, // ESRCH
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| 69 |
+
not_a_directory, // ENOTDIR
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| 70 |
+
not_a_socket, // ENOTSOCK
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| 71 |
+
not_a_stream, // ENOSTR
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| 72 |
+
not_connected, // ENOTCONN
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| 73 |
+
not_enough_memory, // ENOMEM
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| 74 |
+
not_supported, // ENOTSUP
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| 75 |
+
operation_canceled, // ECANCELED
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| 76 |
+
operation_in_progress, // EINPROGRESS
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| 77 |
+
operation_not_permitted, // EPERM
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| 78 |
+
operation_not_supported, // EOPNOTSUPP
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| 79 |
+
operation_would_block, // EWOULDBLOCK
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| 80 |
+
owner_dead, // EOWNERDEAD
|
| 81 |
+
permission_denied, // EACCES
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| 82 |
+
protocol_error, // EPROTO
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| 83 |
+
protocol_not_supported, // EPROTONOSUPPORT
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| 84 |
+
read_only_file_system, // EROFS
|
| 85 |
+
resource_deadlock_would_occur, // EDEADLK
|
| 86 |
+
resource_unavailable_try_again, // EAGAIN
|
| 87 |
+
result_out_of_range, // ERANGE
|
| 88 |
+
state_not_recoverable, // ENOTRECOVERABLE
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| 89 |
+
stream_timeout, // ETIME
|
| 90 |
+
text_file_busy, // ETXTBSY
|
| 91 |
+
timed_out, // ETIMEDOUT
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| 92 |
+
too_many_files_open_in_system, // ENFILE
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| 93 |
+
too_many_files_open, // EMFILE
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| 94 |
+
too_many_links, // EMLINK
|
| 95 |
+
too_many_symbolic_link_levels, // ELOOP
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| 96 |
+
value_too_large, // EOVERFLOW
|
| 97 |
+
wrong_protocol_type, // EPROTOTYPE
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| 98 |
+
};
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| 99 |
+
|
| 100 |
+
template <> struct is_error_condition_enum<errc> : true_type {};
|
| 101 |
+
|
| 102 |
+
// [syserr.errcode.nonmembers], non-member functions
|
| 103 |
+
error_code make_error_code(errc e) noexcept;
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| 104 |
+
|
| 105 |
+
template <class charT, class traits>
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| 106 |
+
basic_ostream<charT, traits>&
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| 107 |
+
operator<<(basic_ostream<charT, traits>& os, const error_code& ec);
|
| 108 |
+
|
| 109 |
+
// [syserr.errcondition.nonmembers], non-member functions
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| 110 |
+
error_condition make_error_condition(errc e) noexcept;
|
| 111 |
+
|
| 112 |
+
// [syserr.compare], comparison functions
|
| 113 |
+
bool operator<(const error_code& lhs, const error_code& rhs) noexcept;
|
| 114 |
+
bool operator<(const error_condition& lhs, const error_condition& rhs) noexcept;
|
| 115 |
+
bool operator==(const error_code& lhs, const error_code& rhs) noexcept;
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| 116 |
+
bool operator==(const error_code& lhs, const error_condition& rhs) noexcept;
|
| 117 |
+
bool operator==(const error_condition& lhs, const error_code& rhs) noexcept;
|
| 118 |
+
bool operator==(const error_condition& lhs, const error_condition& rhs) noexcept;
|
| 119 |
+
bool operator!=(const error_code& lhs, const error_code& rhs) noexcept;
|
| 120 |
+
bool operator!=(const error_code& lhs, const error_condition& rhs) noexcept;
|
| 121 |
+
bool operator!=(const error_condition& lhs, const error_code& rhs) noexcept;
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| 122 |
+
bool operator!=(const error_condition& lhs, const error_condition& rhs) noexcept;
|
| 123 |
+
|
| 124 |
+
// [syserr.hash], hash support
|
| 125 |
+
template <class T> struct hash;
|
| 126 |
+
template <> struct hash<error_code>;
|
| 127 |
+
template <> struct hash<error_condition>;
|
| 128 |
+
|
| 129 |
+
// [syserr], system error support
|
| 130 |
+
template <class T> inline constexpr bool is_error_code_enum_v
|
| 131 |
+
= is_error_code_enum<T>::value;
|
| 132 |
+
template <class T> inline constexpr bool is_error_condition_enum_v
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| 133 |
+
= is_error_condition_enum<T>::value;
|
| 134 |
+
}
|
| 135 |
+
```
|
| 136 |
+
|
| 137 |
+
The value of each `enum errc` constant shall be the same as the value of
|
| 138 |
+
the `<cerrno>` macro shown in the above synopsis. Whether or not the
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| 139 |
+
`<system_error>` implementation exposes the `<cerrno>` macros is
|
| 140 |
+
unspecified.
|
| 141 |
+
|
| 142 |
+
The `is_error_code_enum` and `is_error_condition_enum` may be
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| 143 |
+
specialized for user-defined types to indicate that such types are
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| 144 |
+
eligible for `class error_code` and `class error_condition` automatic
|
| 145 |
+
conversions, respectively.
|
| 146 |
+
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