line |
stmt |
bran |
cond |
sub |
pod |
time |
code |
1
|
|
|
|
|
|
|
// -*- C++ -*- |
2
|
|
|
|
|
|
|
|
3
|
|
|
|
|
|
|
// Copyright (C) 2007-2015 Free Software Foundation, Inc. |
4
|
|
|
|
|
|
|
// |
5
|
|
|
|
|
|
|
// This file is part of the GNU ISO C++ Library. This library is free |
6
|
|
|
|
|
|
|
// software; you can redistribute it and/or modify it under the |
7
|
|
|
|
|
|
|
// terms of the GNU General Public License as published by the |
8
|
|
|
|
|
|
|
// Free Software Foundation; either version 3, or (at your option) |
9
|
|
|
|
|
|
|
// any later version. |
10
|
|
|
|
|
|
|
|
11
|
|
|
|
|
|
|
// This library is distributed in the hope that it will be useful, |
12
|
|
|
|
|
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of |
13
|
|
|
|
|
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14
|
|
|
|
|
|
|
// GNU General Public License for more details. |
15
|
|
|
|
|
|
|
|
16
|
|
|
|
|
|
|
// Under Section 7 of GPL version 3, you are granted additional |
17
|
|
|
|
|
|
|
// permissions described in the GCC Runtime Library Exception, version |
18
|
|
|
|
|
|
|
// 3.1, as published by the Free Software Foundation. |
19
|
|
|
|
|
|
|
|
20
|
|
|
|
|
|
|
// You should have received a copy of the GNU General Public License and |
21
|
|
|
|
|
|
|
// a copy of the GCC Runtime Library Exception along with this program; |
22
|
|
|
|
|
|
|
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
23
|
|
|
|
|
|
|
// . |
24
|
|
|
|
|
|
|
|
25
|
|
|
|
|
|
|
/** @file include/system_error |
26
|
|
|
|
|
|
|
* This is a Standard C++ Library header. |
27
|
|
|
|
|
|
|
*/ |
28
|
|
|
|
|
|
|
|
29
|
|
|
|
|
|
|
#ifndef _GLIBCXX_SYSTEM_ERROR |
30
|
|
|
|
|
|
|
#define _GLIBCXX_SYSTEM_ERROR 1 |
31
|
|
|
|
|
|
|
|
32
|
|
|
|
|
|
|
#pragma GCC system_header |
33
|
|
|
|
|
|
|
|
34
|
|
|
|
|
|
|
#if __cplusplus < 201103L |
35
|
|
|
|
|
|
|
# include |
36
|
|
|
|
|
|
|
#else |
37
|
|
|
|
|
|
|
|
38
|
|
|
|
|
|
|
#include |
39
|
|
|
|
|
|
|
#include |
40
|
|
|
|
|
|
|
#include |
41
|
|
|
|
|
|
|
#include |
42
|
|
|
|
|
|
|
|
43
|
|
|
|
|
|
|
namespace std _GLIBCXX_VISIBILITY(default) |
44
|
|
|
|
|
|
|
{ |
45
|
|
|
|
|
|
|
_GLIBCXX_BEGIN_NAMESPACE_VERSION |
46
|
|
|
|
|
|
|
|
47
|
|
|
|
|
|
|
class error_code; |
48
|
|
|
|
|
|
|
class error_condition; |
49
|
|
|
|
|
|
|
class system_error; |
50
|
|
|
|
|
|
|
|
51
|
|
|
|
|
|
|
/// is_error_code_enum |
52
|
|
|
|
|
|
|
template |
53
|
|
|
|
|
|
|
struct is_error_code_enum : public false_type { }; |
54
|
|
|
|
|
|
|
|
55
|
|
|
|
|
|
|
/// is_error_condition_enum |
56
|
|
|
|
|
|
|
template |
57
|
|
|
|
|
|
|
struct is_error_condition_enum : public false_type { }; |
58
|
|
|
|
|
|
|
|
59
|
|
|
|
|
|
|
template<> |
60
|
|
|
|
|
|
|
struct is_error_condition_enum |
61
|
|
|
|
|
|
|
: public true_type { }; |
62
|
|
|
|
|
|
|
|
63
|
|
|
|
|
|
|
inline namespace _V2 { |
64
|
|
|
|
|
|
|
|
65
|
|
|
|
|
|
|
/// error_category |
66
|
|
|
|
|
|
|
class error_category |
67
|
|
|
|
|
|
|
{ |
68
|
|
|
|
|
|
|
public: |
69
|
|
|
|
|
|
|
constexpr error_category() noexcept = default; |
70
|
|
|
|
|
|
|
|
71
|
|
|
|
|
|
|
virtual ~error_category(); |
72
|
|
|
|
|
|
|
|
73
|
|
|
|
|
|
|
error_category(const error_category&) = delete; |
74
|
|
|
|
|
|
|
error_category& operator=(const error_category&) = delete; |
75
|
|
|
|
|
|
|
|
76
|
|
|
|
|
|
|
virtual const char* |
77
|
|
|
|
|
|
|
name() const noexcept = 0; |
78
|
|
|
|
|
|
|
|
79
|
|
|
|
|
|
|
// We need two different virtual functions here, one returning a |
80
|
|
|
|
|
|
|
// COW string and one returning an SSO string. Their positions in the |
81
|
|
|
|
|
|
|
// vtable must be consistent for dynamic dispatch to work, but which one |
82
|
|
|
|
|
|
|
// the name "message()" finds depends on which ABI the caller is using. |
83
|
|
|
|
|
|
|
#if _GLIBCXX_USE_CXX11_ABI |
84
|
|
|
|
|
|
|
private: |
85
|
|
|
|
|
|
|
_GLIBCXX_DEFAULT_ABI_TAG |
86
|
|
|
|
|
|
|
virtual __cow_string |
87
|
|
|
|
|
|
|
_M_message(int) const; |
88
|
|
|
|
|
|
|
|
89
|
|
|
|
|
|
|
public: |
90
|
|
|
|
|
|
|
_GLIBCXX_DEFAULT_ABI_TAG |
91
|
|
|
|
|
|
|
virtual string |
92
|
|
|
|
|
|
|
message(int) const = 0; |
93
|
|
|
|
|
|
|
#else |
94
|
|
|
|
|
|
|
virtual string |
95
|
|
|
|
|
|
|
message(int) const = 0; |
96
|
|
|
|
|
|
|
|
97
|
|
|
|
|
|
|
private: |
98
|
|
|
|
|
|
|
virtual __sso_string |
99
|
|
|
|
|
|
|
_M_message(int) const; |
100
|
|
|
|
|
|
|
#endif |
101
|
|
|
|
|
|
|
|
102
|
|
|
|
|
|
|
public: |
103
|
|
|
|
|
|
|
virtual error_condition |
104
|
|
|
|
|
|
|
default_error_condition(int __i) const noexcept; |
105
|
|
|
|
|
|
|
|
106
|
|
|
|
|
|
|
virtual bool |
107
|
|
|
|
|
|
|
equivalent(int __i, const error_condition& __cond) const noexcept; |
108
|
|
|
|
|
|
|
|
109
|
|
|
|
|
|
|
virtual bool |
110
|
|
|
|
|
|
|
equivalent(const error_code& __code, int __i) const noexcept; |
111
|
|
|
|
|
|
|
|
112
|
|
|
|
|
|
|
bool |
113
|
|
|
|
|
|
|
operator<(const error_category& __other) const noexcept |
114
|
|
|
|
|
|
|
{ return less()(this, &__other); } |
115
|
|
|
|
|
|
|
|
116
|
|
|
|
|
|
|
bool |
117
|
|
|
|
|
|
|
operator==(const error_category& __other) const noexcept |
118
|
|
|
|
|
|
|
{ return this == &__other; } |
119
|
|
|
|
|
|
|
|
120
|
|
|
|
|
|
|
bool |
121
|
|
|
|
|
|
|
operator!=(const error_category& __other) const noexcept |
122
|
|
|
|
|
|
|
{ return this != &__other; } |
123
|
|
|
|
|
|
|
}; |
124
|
|
|
|
|
|
|
|
125
|
|
|
|
|
|
|
// DR 890. |
126
|
|
|
|
|
|
|
_GLIBCXX_CONST const error_category& system_category() noexcept; |
127
|
|
|
|
|
|
|
_GLIBCXX_CONST const error_category& generic_category() noexcept; |
128
|
|
|
|
|
|
|
|
129
|
|
|
|
|
|
|
} // end inline namespace |
130
|
|
|
|
|
|
|
|
131
|
|
|
|
|
|
|
error_code make_error_code(errc) noexcept; |
132
|
|
|
|
|
|
|
|
133
|
|
|
|
|
|
|
template |
134
|
|
|
|
|
|
|
struct hash; |
135
|
|
|
|
|
|
|
|
136
|
|
|
|
|
|
|
/// error_code |
137
|
|
|
|
|
|
|
// Implementation-specific error identification |
138
|
|
|
|
|
|
|
struct error_code |
139
|
|
|
|
|
|
|
{ |
140
|
|
|
|
|
|
|
error_code() noexcept |
141
|
|
|
|
|
|
|
: _M_value(0), _M_cat(&system_category()) { } |
142
|
|
|
|
|
|
|
|
143
|
|
|
|
|
|
|
error_code(int __v, const error_category& __cat) noexcept |
144
|
|
|
|
|
|
|
: _M_value(__v), _M_cat(&__cat) { } |
145
|
|
|
|
|
|
|
|
146
|
|
|
|
|
|
|
template
|
147
|
|
|
|
|
|
|
enable_if::value>::type> |
148
|
|
|
|
|
|
|
error_code(_ErrorCodeEnum __e) noexcept |
149
|
|
|
|
|
|
|
{ *this = make_error_code(__e); } |
150
|
|
|
|
|
|
|
|
151
|
|
|
|
|
|
|
void |
152
|
|
|
|
|
|
|
assign(int __v, const error_category& __cat) noexcept |
153
|
|
|
|
|
|
|
{ |
154
|
|
|
|
|
|
|
_M_value = __v; |
155
|
|
|
|
|
|
|
_M_cat = &__cat; |
156
|
|
|
|
|
|
|
} |
157
|
|
|
|
|
|
|
|
158
|
|
|
|
|
|
|
void |
159
|
|
|
|
|
|
|
clear() noexcept |
160
|
|
|
|
|
|
|
{ assign(0, system_category()); } |
161
|
|
|
|
|
|
|
|
162
|
|
|
|
|
|
|
// DR 804. |
163
|
|
|
|
|
|
|
template |
164
|
|
|
|
|
|
|
typename enable_if::value, |
165
|
|
|
|
|
|
|
error_code&>::type |
166
|
|
|
|
|
|
|
operator=(_ErrorCodeEnum __e) noexcept |
167
|
|
|
|
|
|
|
{ return *this = make_error_code(__e); } |
168
|
|
|
|
|
|
|
|
169
|
|
|
|
|
|
|
int |
170
|
|
|
|
|
|
|
value() const noexcept { return _M_value; } |
171
|
|
|
|
|
|
|
|
172
|
|
|
|
|
|
|
const error_category& |
173
|
|
|
|
|
|
|
category() const noexcept { return *_M_cat; } |
174
|
|
|
|
|
|
|
|
175
|
|
|
|
|
|
|
error_condition |
176
|
|
|
|
|
|
|
default_error_condition() const noexcept; |
177
|
|
|
|
|
|
|
|
178
|
|
|
|
|
|
|
_GLIBCXX_DEFAULT_ABI_TAG |
179
|
|
|
|
|
|
|
string |
180
|
|
|
|
|
|
|
message() const |
181
|
|
|
|
|
|
|
{ return category().message(value()); } |
182
|
|
|
|
|
|
|
|
183
|
54
|
|
|
|
|
|
explicit operator bool() const noexcept |
184
|
54
|
|
|
|
|
|
{ return _M_value != 0 ? true : false; } |
185
|
|
|
|
|
|
|
|
186
|
|
|
|
|
|
|
// DR 804. |
187
|
|
|
|
|
|
|
private: |
188
|
|
|
|
|
|
|
friend class hash; |
189
|
|
|
|
|
|
|
|
190
|
|
|
|
|
|
|
int _M_value; |
191
|
|
|
|
|
|
|
const error_category* _M_cat; |
192
|
|
|
|
|
|
|
}; |
193
|
|
|
|
|
|
|
|
194
|
|
|
|
|
|
|
// 19.4.2.6 non-member functions |
195
|
|
|
|
|
|
|
inline error_code |
196
|
|
|
|
|
|
|
make_error_code(errc __e) noexcept |
197
|
|
|
|
|
|
|
{ return error_code(static_cast(__e), generic_category()); } |
198
|
|
|
|
|
|
|
|
199
|
|
|
|
|
|
|
inline bool |
200
|
|
|
|
|
|
|
operator<(const error_code& __lhs, const error_code& __rhs) noexcept |
201
|
|
|
|
|
|
|
{ |
202
|
|
|
|
|
|
|
return (__lhs.category() < __rhs.category() |
203
|
|
|
|
|
|
|
|| (__lhs.category() == __rhs.category() |
204
|
|
|
|
|
|
|
&& __lhs.value() < __rhs.value())); |
205
|
|
|
|
|
|
|
} |
206
|
|
|
|
|
|
|
|
207
|
|
|
|
|
|
|
template |
208
|
|
|
|
|
|
|
basic_ostream<_CharT, _Traits>& |
209
|
|
|
|
|
|
|
operator<<(basic_ostream<_CharT, _Traits>& __os, const error_code& __e) |
210
|
|
|
|
|
|
|
{ return (__os << __e.category().name() << ':' << __e.value()); } |
211
|
|
|
|
|
|
|
|
212
|
|
|
|
|
|
|
error_condition make_error_condition(errc) noexcept; |
213
|
|
|
|
|
|
|
|
214
|
|
|
|
|
|
|
/// error_condition |
215
|
|
|
|
|
|
|
// Portable error identification |
216
|
|
|
|
|
|
|
struct error_condition |
217
|
|
|
|
|
|
|
{ |
218
|
|
|
|
|
|
|
error_condition() noexcept |
219
|
|
|
|
|
|
|
: _M_value(0), _M_cat(&generic_category()) { } |
220
|
|
|
|
|
|
|
|
221
|
|
|
|
|
|
|
error_condition(int __v, const error_category& __cat) noexcept |
222
|
|
|
|
|
|
|
: _M_value(__v), _M_cat(&__cat) { } |
223
|
|
|
|
|
|
|
|
224
|
|
|
|
|
|
|
template
|
225
|
|
|
|
|
|
|
enable_if::value>::type> |
226
|
|
|
|
|
|
|
error_condition(_ErrorConditionEnum __e) noexcept |
227
|
|
|
|
|
|
|
{ *this = make_error_condition(__e); } |
228
|
|
|
|
|
|
|
|
229
|
|
|
|
|
|
|
void |
230
|
|
|
|
|
|
|
assign(int __v, const error_category& __cat) noexcept |
231
|
|
|
|
|
|
|
{ |
232
|
|
|
|
|
|
|
_M_value = __v; |
233
|
|
|
|
|
|
|
_M_cat = &__cat; |
234
|
|
|
|
|
|
|
} |
235
|
|
|
|
|
|
|
|
236
|
|
|
|
|
|
|
// DR 804. |
237
|
|
|
|
|
|
|
template |
238
|
|
|
|
|
|
|
typename enable_if
|
239
|
|
|
|
|
|
|
<_ErrorConditionEnum>::value, error_condition&>::type |
240
|
|
|
|
|
|
|
operator=(_ErrorConditionEnum __e) noexcept |
241
|
|
|
|
|
|
|
{ return *this = make_error_condition(__e); } |
242
|
|
|
|
|
|
|
|
243
|
|
|
|
|
|
|
void |
244
|
|
|
|
|
|
|
clear() noexcept |
245
|
|
|
|
|
|
|
{ assign(0, generic_category()); } |
246
|
|
|
|
|
|
|
|
247
|
|
|
|
|
|
|
// 19.4.3.4 observers |
248
|
|
|
|
|
|
|
int |
249
|
|
|
|
|
|
|
value() const noexcept { return _M_value; } |
250
|
|
|
|
|
|
|
|
251
|
|
|
|
|
|
|
const error_category& |
252
|
|
|
|
|
|
|
category() const noexcept { return *_M_cat; } |
253
|
|
|
|
|
|
|
|
254
|
|
|
|
|
|
|
_GLIBCXX_DEFAULT_ABI_TAG |
255
|
|
|
|
|
|
|
string |
256
|
|
|
|
|
|
|
message() const |
257
|
|
|
|
|
|
|
{ return category().message(value()); } |
258
|
|
|
|
|
|
|
|
259
|
|
|
|
|
|
|
explicit operator bool() const noexcept |
260
|
|
|
|
|
|
|
{ return _M_value != 0 ? true : false; } |
261
|
|
|
|
|
|
|
|
262
|
|
|
|
|
|
|
// DR 804. |
263
|
|
|
|
|
|
|
private: |
264
|
|
|
|
|
|
|
int _M_value; |
265
|
|
|
|
|
|
|
const error_category* _M_cat; |
266
|
|
|
|
|
|
|
}; |
267
|
|
|
|
|
|
|
|
268
|
|
|
|
|
|
|
// 19.4.3.6 non-member functions |
269
|
|
|
|
|
|
|
inline error_condition |
270
|
|
|
|
|
|
|
make_error_condition(errc __e) noexcept |
271
|
|
|
|
|
|
|
{ return error_condition(static_cast(__e), generic_category()); } |
272
|
|
|
|
|
|
|
|
273
|
|
|
|
|
|
|
inline bool |
274
|
|
|
|
|
|
|
operator<(const error_condition& __lhs, |
275
|
|
|
|
|
|
|
const error_condition& __rhs) noexcept |
276
|
|
|
|
|
|
|
{ |
277
|
|
|
|
|
|
|
return (__lhs.category() < __rhs.category() |
278
|
|
|
|
|
|
|
|| (__lhs.category() == __rhs.category() |
279
|
|
|
|
|
|
|
&& __lhs.value() < __rhs.value())); |
280
|
|
|
|
|
|
|
} |
281
|
|
|
|
|
|
|
|
282
|
|
|
|
|
|
|
// 19.4.4 Comparison operators |
283
|
|
|
|
|
|
|
inline bool |
284
|
|
|
|
|
|
|
operator==(const error_code& __lhs, const error_code& __rhs) noexcept |
285
|
|
|
|
|
|
|
{ return (__lhs.category() == __rhs.category() |
286
|
|
|
|
|
|
|
&& __lhs.value() == __rhs.value()); } |
287
|
|
|
|
|
|
|
|
288
|
|
|
|
|
|
|
inline bool |
289
|
|
|
|
|
|
|
operator==(const error_code& __lhs, const error_condition& __rhs) noexcept |
290
|
|
|
|
|
|
|
{ |
291
|
|
|
|
|
|
|
return (__lhs.category().equivalent(__lhs.value(), __rhs) |
292
|
|
|
|
|
|
|
|| __rhs.category().equivalent(__lhs, __rhs.value())); |
293
|
|
|
|
|
|
|
} |
294
|
|
|
|
|
|
|
|
295
|
|
|
|
|
|
|
inline bool |
296
|
|
|
|
|
|
|
operator==(const error_condition& __lhs, const error_code& __rhs) noexcept |
297
|
|
|
|
|
|
|
{ |
298
|
|
|
|
|
|
|
return (__rhs.category().equivalent(__rhs.value(), __lhs) |
299
|
|
|
|
|
|
|
|| __lhs.category().equivalent(__rhs, __lhs.value())); |
300
|
|
|
|
|
|
|
} |
301
|
|
|
|
|
|
|
|
302
|
|
|
|
|
|
|
inline bool |
303
|
|
|
|
|
|
|
operator==(const error_condition& __lhs, |
304
|
|
|
|
|
|
|
const error_condition& __rhs) noexcept |
305
|
|
|
|
|
|
|
{ |
306
|
|
|
|
|
|
|
return (__lhs.category() == __rhs.category() |
307
|
|
|
|
|
|
|
&& __lhs.value() == __rhs.value()); |
308
|
|
|
|
|
|
|
} |
309
|
|
|
|
|
|
|
|
310
|
|
|
|
|
|
|
inline bool |
311
|
|
|
|
|
|
|
operator!=(const error_code& __lhs, const error_code& __rhs) noexcept |
312
|
|
|
|
|
|
|
{ return !(__lhs == __rhs); } |
313
|
|
|
|
|
|
|
|
314
|
|
|
|
|
|
|
inline bool |
315
|
|
|
|
|
|
|
operator!=(const error_code& __lhs, const error_condition& __rhs) noexcept |
316
|
|
|
|
|
|
|
{ return !(__lhs == __rhs); } |
317
|
|
|
|
|
|
|
|
318
|
|
|
|
|
|
|
inline bool |
319
|
|
|
|
|
|
|
operator!=(const error_condition& __lhs, const error_code& __rhs) noexcept |
320
|
|
|
|
|
|
|
{ return !(__lhs == __rhs); } |
321
|
|
|
|
|
|
|
|
322
|
|
|
|
|
|
|
inline bool |
323
|
|
|
|
|
|
|
operator!=(const error_condition& __lhs, |
324
|
|
|
|
|
|
|
const error_condition& __rhs) noexcept |
325
|
|
|
|
|
|
|
{ return !(__lhs == __rhs); } |
326
|
|
|
|
|
|
|
|
327
|
|
|
|
|
|
|
|
328
|
|
|
|
|
|
|
/** |
329
|
|
|
|
|
|
|
* @brief Thrown to indicate error code of underlying system. |
330
|
|
|
|
|
|
|
* |
331
|
|
|
|
|
|
|
* @ingroup exceptions |
332
|
|
|
|
|
|
|
*/ |
333
|
|
|
|
|
|
|
class system_error : public std::runtime_error |
334
|
|
|
|
|
|
|
{ |
335
|
|
|
|
|
|
|
private: |
336
|
|
|
|
|
|
|
error_code _M_code; |
337
|
|
|
|
|
|
|
|
338
|
|
|
|
|
|
|
public: |
339
|
|
|
|
|
|
|
system_error(error_code __ec = error_code()) |
340
|
|
|
|
|
|
|
: runtime_error(__ec.message()), _M_code(__ec) { } |
341
|
|
|
|
|
|
|
|
342
|
|
|
|
|
|
|
system_error(error_code __ec, const string& __what) |
343
|
|
|
|
|
|
|
: runtime_error(__what + ": " + __ec.message()), _M_code(__ec) { } |
344
|
|
|
|
|
|
|
|
345
|
|
|
|
|
|
|
system_error(error_code __ec, const char* __what) |
346
|
|
|
|
|
|
|
: runtime_error(__what + (": " + __ec.message())), _M_code(__ec) { } |
347
|
|
|
|
|
|
|
|
348
|
|
|
|
|
|
|
system_error(int __v, const error_category& __ecat, const char* __what) |
349
|
|
|
|
|
|
|
: system_error(error_code(__v, __ecat), __what) { } |
350
|
|
|
|
|
|
|
|
351
|
|
|
|
|
|
|
system_error(int __v, const error_category& __ecat) |
352
|
|
|
|
|
|
|
: runtime_error(error_code(__v, __ecat).message()), |
353
|
|
|
|
|
|
|
_M_code(__v, __ecat) { } |
354
|
|
|
|
|
|
|
|
355
|
|
|
|
|
|
|
system_error(int __v, const error_category& __ecat, const string& __what) |
356
|
|
|
|
|
|
|
: runtime_error(__what + ": " + error_code(__v, __ecat).message()), |
357
|
|
|
|
|
|
|
_M_code(__v, __ecat) { } |
358
|
|
|
|
|
|
|
|
359
|
|
|
|
|
|
|
virtual ~system_error() noexcept; |
360
|
|
|
|
|
|
|
|
361
|
|
|
|
|
|
|
const error_code& |
362
|
|
|
|
|
|
|
code() const noexcept { return _M_code; } |
363
|
|
|
|
|
|
|
}; |
364
|
|
|
|
|
|
|
|
365
|
|
|
|
|
|
|
_GLIBCXX_END_NAMESPACE_VERSION |
366
|
|
|
|
|
|
|
} // namespace |
367
|
|
|
|
|
|
|
|
368
|
|
|
|
|
|
|
#ifndef _GLIBCXX_COMPATIBILITY_CXX0X |
369
|
|
|
|
|
|
|
|
370
|
|
|
|
|
|
|
#include |
371
|
|
|
|
|
|
|
|
372
|
|
|
|
|
|
|
namespace std _GLIBCXX_VISIBILITY(default) |
373
|
|
|
|
|
|
|
{ |
374
|
|
|
|
|
|
|
_GLIBCXX_BEGIN_NAMESPACE_VERSION |
375
|
|
|
|
|
|
|
|
376
|
|
|
|
|
|
|
// DR 1182. |
377
|
|
|
|
|
|
|
/// std::hash specialization for error_code. |
378
|
|
|
|
|
|
|
template<> |
379
|
|
|
|
|
|
|
struct hash |
380
|
|
|
|
|
|
|
: public __hash_base |
381
|
|
|
|
|
|
|
{ |
382
|
|
|
|
|
|
|
size_t |
383
|
|
|
|
|
|
|
operator()(const error_code& __e) const noexcept |
384
|
|
|
|
|
|
|
{ |
385
|
|
|
|
|
|
|
const size_t __tmp = std::_Hash_impl::hash(__e._M_value); |
386
|
|
|
|
|
|
|
return std::_Hash_impl::__hash_combine(__e._M_cat, __tmp); |
387
|
|
|
|
|
|
|
} |
388
|
|
|
|
|
|
|
}; |
389
|
|
|
|
|
|
|
|
390
|
|
|
|
|
|
|
_GLIBCXX_END_NAMESPACE_VERSION |
391
|
|
|
|
|
|
|
} // namespace |
392
|
|
|
|
|
|
|
|
393
|
|
|
|
|
|
|
#endif // _GLIBCXX_COMPATIBILITY_CXX0X |
394
|
|
|
|
|
|
|
|
395
|
|
|
|
|
|
|
#endif // C++11 |
396
|
|
|
|
|
|
|
|
397
|
|
|
|
|
|
|
#endif // _GLIBCXX_SYSTEM_ERROR |