libstdc++
macros.h
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1 // Debugging support implementation -*- C++ -*-
2 
3 // Copyright (C) 2003-2020 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 // <http://www.gnu.org/licenses/>.
24 
25 /** @file debug/macros.h
26  * This file is a GNU debug extension to the Standard C++ Library.
27  */
28 
29 #ifndef _GLIBCXX_DEBUG_MACROS_H
30 #define _GLIBCXX_DEBUG_MACROS_H 1
31 
32 /**
33  * Macros used by the implementation to verify certain
34  * properties. These macros may only be used directly by the debug
35  * wrappers. Note that these are macros (instead of the more obviously
36  * @a correct choice of making them functions) because we need line and
37  * file information at the call site, to minimize the distance between
38  * the user error and where the error is reported.
39  *
40  */
41 #if 0 /* defined _GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED */
42 # define _GLIBCXX_DEBUG_VERIFY_COND_AT(_Cond,_ErrMsg,_File,_Line,_Func) \
43  if (__builtin_is_constant_evaluated()) \
44  /* FIXME: Compilation error here when !_Cond. */ \
45  break; \
46  if (! (_Cond)) \
47  __gnu_debug::_Error_formatter::_S_at(_File, _Line, _Func) \
48  ._ErrMsg._M_error()
49 #else
50 # define _GLIBCXX_DEBUG_VERIFY_COND_AT(_Cond,_ErrMsg,_File,_Line,_Func) \
51  if (! (_Cond)) \
52  __gnu_debug::_Error_formatter::_S_at(_File, _Line, _Func) \
53  ._ErrMsg._M_error()
54 #endif
55 
56 #define _GLIBCXX_DEBUG_VERIFY_AT_F(_Cond,_ErrMsg,_File,_Line,_Func) \
57  do \
58  { \
59  _GLIBCXX_DEBUG_VERIFY_COND_AT(_Cond,_ErrMsg,_File,_Line,_Func); \
60  } while (false)
61 
62 #define _GLIBCXX_DEBUG_VERIFY_AT(_Cond,_ErrMsg,_File,_Line) \
63  _GLIBCXX_DEBUG_VERIFY_AT_F(_Cond,_ErrMsg,_File,_Line,__PRETTY_FUNCTION__)
64 
65 #define _GLIBCXX_DEBUG_VERIFY(_Cond,_ErrMsg) \
66  _GLIBCXX_DEBUG_VERIFY_AT_F(_Cond, _ErrMsg, __FILE__, __LINE__, \
67  __PRETTY_FUNCTION__)
68 
69 // Verify that [_First, _Last) forms a valid iterator range.
70 #define __glibcxx_check_valid_range(_First,_Last) \
71 _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__valid_range(_First, _Last), \
72  _M_message(__gnu_debug::__msg_valid_range) \
73  ._M_iterator(_First, #_First) \
74  ._M_iterator(_Last, #_Last))
75 
76 #define __glibcxx_check_valid_range_at(_First,_Last,_File,_Line,_Func) \
77 _GLIBCXX_DEBUG_VERIFY_AT_F(__gnu_debug::__valid_range(_First, _Last), \
78  _M_message(__gnu_debug::__msg_valid_range) \
79  ._M_iterator(_First, #_First) \
80  ._M_iterator(_Last, #_Last), \
81  _File,_Line,_Func)
82 
83 #define __glibcxx_check_valid_range2(_First,_Last,_Dist) \
84 _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__valid_range(_First, _Last, _Dist), \
85  _M_message(__gnu_debug::__msg_valid_range) \
86  ._M_iterator(_First, #_First) \
87  ._M_iterator(_Last, #_Last))
88 
89 #define __glibcxx_check_valid_constructor_range(_First,_Last) \
90  __gnu_debug::__check_valid_range(_First, _Last, \
91  __FILE__, __LINE__, __PRETTY_FUNCTION__)
92 
93 // Verify that [_First, _Last) forms a non-empty iterator range.
94 #define __glibcxx_check_non_empty_range(_First,_Last) \
95 _GLIBCXX_DEBUG_VERIFY(_First != _Last, \
96  _M_message(__gnu_debug::__msg_non_empty_range) \
97  ._M_iterator(_First, #_First) \
98  ._M_iterator(_Last, #_Last))
99 
100 // Verify that [_First, _First + _Size) forms a valid range.
101 #define __glibcxx_check_can_increment(_First,_Size) \
102 _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__can_advance(_First, _Size), \
103  _M_message(__gnu_debug::__msg_iter_subscript_oob) \
104  ._M_iterator(_First, #_First) \
105  ._M_integer(_Size, #_Size))
106 
107 #define __glibcxx_check_can_increment_dist(_First,_Dist,_Way) \
108  _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__can_advance(_First, _Dist, _Way), \
109  _M_message(__gnu_debug::__msg_iter_subscript_oob) \
110  ._M_iterator(_First, #_First) \
111  ._M_integer(_Way * _Dist.first, #_Dist))
112 
113 #define __glibcxx_check_can_increment_range(_First1,_Last1,_First2) \
114  do \
115  { \
116  typename __gnu_debug::_Distance_traits<__decltype(_First1)>::__type __dist;\
117  _GLIBCXX_DEBUG_VERIFY_COND_AT( \
118  __gnu_debug::__valid_range(_First1, _Last1, __dist),\
119  _M_message(__gnu_debug::__msg_valid_range) \
120  ._M_iterator(_First1, #_First1) \
121  ._M_iterator(_Last1, #_Last1), \
122  __FILE__,__LINE__,__PRETTY_FUNCTION__); \
123  _GLIBCXX_DEBUG_VERIFY_COND_AT( \
124  __gnu_debug::__can_advance(_First2, __dist, 1), \
125  _M_message(__gnu_debug::__msg_iter_subscript_oob)\
126  ._M_iterator(_First2, #_First2) \
127  ._M_integer(__dist.first), \
128  __FILE__,__LINE__,__PRETTY_FUNCTION__); \
129  } while(false)
130 
131 #define __glibcxx_check_can_decrement_range(_First1,_Last1,_First2) \
132  do \
133  { \
134  typename __gnu_debug::_Distance_traits<__decltype(_First1)>::__type __dist;\
135  _GLIBCXX_DEBUG_VERIFY_COND_AT( \
136  __gnu_debug::__valid_range(_First1, _Last1, __dist),\
137  _M_message(__gnu_debug::__msg_valid_range) \
138  ._M_iterator(_First1, #_First1) \
139  ._M_iterator(_Last1, #_Last1), \
140  __FILE__,__LINE__,__PRETTY_FUNCTION__); \
141  _GLIBCXX_DEBUG_VERIFY_COND_AT( \
142  __gnu_debug::__can_advance(_First2, __dist, -1), \
143  _M_message(__gnu_debug::__msg_iter_subscript_oob)\
144  ._M_iterator(_First2, #_First2) \
145  ._M_integer(-__dist.first), \
146  __FILE__,__LINE__,__PRETTY_FUNCTION__); \
147  } while(false)
148 
149 /** Verify that we can insert into *this with the iterator _Position.
150  * Insertion into a container at a specific position requires that
151  * the iterator be nonsingular, either dereferenceable or past-the-end,
152  * and that it reference the sequence we are inserting into. Note that
153  * this macro is only valid when the container is a_Safe_sequence and
154  * the iterator is a _Safe_iterator.
155 */
156 #define __glibcxx_check_insert(_Position) \
157 _GLIBCXX_DEBUG_VERIFY(!_Position._M_singular(), \
158  _M_message(__gnu_debug::__msg_insert_singular) \
159  ._M_sequence(*this, "this") \
160  ._M_iterator(_Position, #_Position)); \
161 _GLIBCXX_DEBUG_VERIFY(_Position._M_attached_to(this), \
162  _M_message(__gnu_debug::__msg_insert_different) \
163  ._M_sequence(*this, "this") \
164  ._M_iterator(_Position, #_Position))
165 
166 /** Verify that we can insert into *this after the iterator _Position.
167  * Insertion into a container after a specific position requires that
168  * the iterator be nonsingular, either dereferenceable or before-begin,
169  * and that it reference the sequence we are inserting into. Note that
170  * this macro is only valid when the container is a_Safe_sequence and
171  * the iterator is a _Safe_iterator.
172 */
173 #define __glibcxx_check_insert_after(_Position) \
174 __glibcxx_check_insert(_Position); \
175 _GLIBCXX_DEBUG_VERIFY(!_Position._M_is_end(), \
176  _M_message(__gnu_debug::__msg_insert_after_end) \
177  ._M_sequence(*this, "this") \
178  ._M_iterator(_Position, #_Position))
179 
180 /** Verify that we can insert the values in the iterator range
181  * [_First, _Last) into *this with the iterator _Position. Insertion
182  * into a container at a specific position requires that the iterator
183  * be nonsingular (i.e., either dereferenceable or past-the-end),
184  * that it reference the sequence we are inserting into, and that the
185  * iterator range [_First, _Last) is a valid (possibly empty)
186  * range which does not reference the sequence we are inserting into.
187  * Note that this macro is only valid when the container is a
188  * _Safe_sequence and the _Position iterator is a _Safe_iterator.
189 */
190 #define __glibcxx_check_insert_range(_Position,_First,_Last,_Dist) \
191 __glibcxx_check_valid_range2(_First,_Last,_Dist); \
192 __glibcxx_check_insert(_Position); \
193 _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__foreign_iterator(_Position,_First,_Last),\
194  _M_message(__gnu_debug::__msg_insert_range_from_self)\
195  ._M_iterator(_First, #_First) \
196  ._M_iterator(_Last, #_Last) \
197  ._M_sequence(*this, "this"))
198 
199 /** Verify that we can insert the values in the iterator range
200  * [_First, _Last) into *this after the iterator _Position. Insertion
201  * into a container after a specific position requires that the iterator
202  * be nonsingular (i.e., either dereferenceable or past-the-end),
203  * that it reference the sequence we are inserting into, and that the
204  * iterator range [_First, _Last) is a valid (possibly empty)
205  * range which does not reference the sequence we are inserting into.
206  * Note that this macro is only valid when the container is a
207  * _Safe_sequence and the _Position iterator is a _Safe_iterator.
208 */
209 #define __glibcxx_check_insert_range_after(_Position,_First,_Last,_Dist)\
210 __glibcxx_check_valid_range2(_First,_Last,_Dist); \
211 __glibcxx_check_insert_after(_Position); \
212 _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__foreign_iterator(_Position,_First,_Last),\
213  _M_message(__gnu_debug::__msg_insert_range_from_self)\
214  ._M_iterator(_First, #_First) \
215  ._M_iterator(_Last, #_Last) \
216  ._M_sequence(*this, "this"))
217 
218 /** Verify that we can erase the element referenced by the iterator
219  * _Position. We can erase the element if the _Position iterator is
220  * dereferenceable and references this sequence.
221 */
222 #define __glibcxx_check_erase(_Position) \
223 _GLIBCXX_DEBUG_VERIFY(_Position._M_dereferenceable(), \
224  _M_message(__gnu_debug::__msg_erase_bad) \
225  ._M_sequence(*this, "this") \
226  ._M_iterator(_Position, #_Position)); \
227 _GLIBCXX_DEBUG_VERIFY(_Position._M_attached_to(this), \
228  _M_message(__gnu_debug::__msg_erase_different) \
229  ._M_sequence(*this, "this") \
230  ._M_iterator(_Position, #_Position))
231 
232 /** Verify that we can erase the element after the iterator
233  * _Position. We can erase the element if the _Position iterator is
234  * before a dereferenceable one and references this sequence.
235 */
236 #define __glibcxx_check_erase_after(_Position) \
237 _GLIBCXX_DEBUG_VERIFY(_Position._M_before_dereferenceable(), \
238  _M_message(__gnu_debug::__msg_erase_after_bad) \
239  ._M_sequence(*this, "this") \
240  ._M_iterator(_Position, #_Position)); \
241 _GLIBCXX_DEBUG_VERIFY(_Position._M_attached_to(this), \
242  _M_message(__gnu_debug::__msg_erase_different) \
243  ._M_sequence(*this, "this") \
244  ._M_iterator(_Position, #_Position))
245 
246 /** Verify that we can erase the elements in the iterator range
247  * [_First, _Last). We can erase the elements if [_First, _Last) is a
248  * valid iterator range within this sequence.
249 */
250 #define __glibcxx_check_erase_range(_First,_Last) \
251 __glibcxx_check_valid_range(_First,_Last); \
252 _GLIBCXX_DEBUG_VERIFY(_First._M_attached_to(this), \
253  _M_message(__gnu_debug::__msg_erase_different) \
254  ._M_sequence(*this, "this") \
255  ._M_iterator(_First, #_First) \
256  ._M_iterator(_Last, #_Last))
257 
258 /** Verify that we can erase the elements in the iterator range
259  * (_First, _Last). We can erase the elements if (_First, _Last) is a
260  * valid iterator range within this sequence.
261 */
262 #define __glibcxx_check_erase_range_after(_First,_Last) \
263 _GLIBCXX_DEBUG_VERIFY(_First._M_can_compare(_Last), \
264  _M_message(__gnu_debug::__msg_erase_different) \
265  ._M_sequence(*this, "this") \
266  ._M_iterator(_First, #_First) \
267  ._M_iterator(_Last, #_Last)); \
268 _GLIBCXX_DEBUG_VERIFY(_First._M_attached_to(this), \
269  _M_message(__gnu_debug::__msg_erase_different) \
270  ._M_sequence(*this, "this") \
271  ._M_iterator(_First, #_First)); \
272 _GLIBCXX_DEBUG_VERIFY(_First != _Last, \
273  _M_message(__gnu_debug::__msg_valid_range2) \
274  ._M_sequence(*this, "this") \
275  ._M_iterator(_First, #_First) \
276  ._M_iterator(_Last, #_Last)); \
277 _GLIBCXX_DEBUG_VERIFY(_First._M_incrementable(), \
278  _M_message(__gnu_debug::__msg_valid_range2) \
279  ._M_sequence(*this, "this") \
280  ._M_iterator(_First, #_First) \
281  ._M_iterator(_Last, #_Last)); \
282 _GLIBCXX_DEBUG_VERIFY(!_Last._M_is_before_begin(), \
283  _M_message(__gnu_debug::__msg_valid_range2) \
284  ._M_sequence(*this, "this") \
285  ._M_iterator(_First, #_First) \
286  ._M_iterator(_Last, #_Last)) \
287 
288 // Verify that the subscript _N is less than the container's size.
289 #define __glibcxx_check_subscript(_N) \
290 _GLIBCXX_DEBUG_VERIFY(_N < this->size(), \
291  _M_message(__gnu_debug::__msg_subscript_oob) \
292  ._M_sequence(*this, "this") \
293  ._M_integer(_N, #_N) \
294  ._M_integer(this->size(), "size"))
295 
296 // Verify that the bucket _N is less than the container's buckets count.
297 #define __glibcxx_check_bucket_index(_N) \
298 _GLIBCXX_DEBUG_VERIFY(_N < this->bucket_count(), \
299  _M_message(__gnu_debug::__msg_bucket_index_oob) \
300  ._M_sequence(*this, "this") \
301  ._M_integer(_N, #_N) \
302  ._M_integer(this->bucket_count(), "size"))
303 
304 // Verify that the container is nonempty
305 #define __glibcxx_check_nonempty() \
306 _GLIBCXX_DEBUG_VERIFY(! this->empty(), \
307  _M_message(__gnu_debug::__msg_empty) \
308  ._M_sequence(*this, "this"))
309 
310 // Verify that a predicate is irreflexive
311 #define __glibcxx_check_irreflexive(_First,_Last) \
312  _GLIBCXX_DEBUG_VERIFY(_First == _Last || !(*_First < *_First), \
313  _M_message(__gnu_debug::__msg_irreflexive_ordering) \
314  ._M_iterator_value_type(_First, "< operator type"))
315 
316 #if __cplusplus >= 201103L
317 # define __glibcxx_check_irreflexive2(_First,_Last) \
318  _GLIBCXX_DEBUG_VERIFY(_First == _Last \
319  || __gnu_debug::__is_irreflexive(_First), \
320  _M_message(__gnu_debug::__msg_irreflexive_ordering) \
321  ._M_iterator_value_type(_First, "< operator type"))
322 #else
323 # define __glibcxx_check_irreflexive2(_First,_Last)
324 #endif
325 
326 #define __glibcxx_check_irreflexive_pred(_First,_Last,_Pred) \
327  _GLIBCXX_DEBUG_VERIFY(_First == _Last || !_Pred(*_First, *_First), \
328  _M_message(__gnu_debug::__msg_irreflexive_ordering) \
329  ._M_instance(_Pred, "functor") \
330  ._M_iterator_value_type(_First, "ordered type"))
331 
332 #if __cplusplus >= 201103L
333 # define __glibcxx_check_irreflexive_pred2(_First,_Last,_Pred) \
334  _GLIBCXX_DEBUG_VERIFY(_First == _Last \
335  ||__gnu_debug::__is_irreflexive_pred(_First, _Pred), \
336  _M_message(__gnu_debug::__msg_irreflexive_ordering) \
337  ._M_instance(_Pred, "functor") \
338  ._M_iterator_value_type(_First, "ordered type"))
339 #else
340 # define __glibcxx_check_irreflexive_pred2(_First,_Last,_Pred)
341 #endif
342 
343 // Verify that the iterator range [_First, _Last) is sorted
344 #define __glibcxx_check_sorted(_First,_Last) \
345 __glibcxx_check_valid_range(_First,_Last); \
346 __glibcxx_check_irreflexive(_First,_Last); \
347  _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_sorted( \
348  __gnu_debug::__base(_First), \
349  __gnu_debug::__base(_Last)), \
350  _M_message(__gnu_debug::__msg_unsorted) \
351  ._M_iterator(_First, #_First) \
352  ._M_iterator(_Last, #_Last))
353 
354 /** Verify that the iterator range [_First, _Last) is sorted by the
355  predicate _Pred. */
356 #define __glibcxx_check_sorted_pred(_First,_Last,_Pred) \
357 __glibcxx_check_valid_range(_First,_Last); \
358 __glibcxx_check_irreflexive_pred(_First,_Last,_Pred); \
359 _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_sorted( \
360  __gnu_debug::__base(_First), \
361  __gnu_debug::__base(_Last), _Pred), \
362  _M_message(__gnu_debug::__msg_unsorted_pred) \
363  ._M_iterator(_First, #_First) \
364  ._M_iterator(_Last, #_Last) \
365  ._M_string(#_Pred))
366 
367 // Special variant for std::merge, std::includes, std::set_*
368 #define __glibcxx_check_sorted_set(_First1,_Last1,_First2) \
369 __glibcxx_check_valid_range(_First1,_Last1); \
370 _GLIBCXX_DEBUG_VERIFY( \
371  __gnu_debug::__check_sorted_set(__gnu_debug::__base(_First1), \
372  __gnu_debug::__base(_Last1), _First2),\
373  _M_message(__gnu_debug::__msg_unsorted) \
374  ._M_iterator(_First1, #_First1) \
375  ._M_iterator(_Last1, #_Last1))
376 
377 // Likewise with a _Pred.
378 #define __glibcxx_check_sorted_set_pred(_First1,_Last1,_First2,_Pred) \
379 __glibcxx_check_valid_range(_First1,_Last1); \
380 _GLIBCXX_DEBUG_VERIFY( \
381  __gnu_debug::__check_sorted_set(__gnu_debug::__base(_First1), \
382  __gnu_debug::__base(_Last1), \
383  _First2, _Pred), \
384  _M_message(__gnu_debug::__msg_unsorted_pred) \
385  ._M_iterator(_First1, #_First1) \
386  ._M_iterator(_Last1, #_Last1) \
387  ._M_string(#_Pred))
388 
389 /** Verify that the iterator range [_First, _Last) is partitioned
390  w.r.t. the value _Value. */
391 #define __glibcxx_check_partitioned_lower(_First,_Last,_Value) \
392 __glibcxx_check_valid_range(_First,_Last); \
393 _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_partitioned_lower( \
394  __gnu_debug::__base(_First), \
395  __gnu_debug::__base(_Last), _Value), \
396  _M_message(__gnu_debug::__msg_unpartitioned) \
397  ._M_iterator(_First, #_First) \
398  ._M_iterator(_Last, #_Last) \
399  ._M_string(#_Value))
400 
401 #define __glibcxx_check_partitioned_upper(_First,_Last,_Value) \
402 __glibcxx_check_valid_range(_First,_Last); \
403 _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_partitioned_upper( \
404  __gnu_debug::__base(_First), \
405  __gnu_debug::__base(_Last), _Value), \
406  _M_message(__gnu_debug::__msg_unpartitioned) \
407  ._M_iterator(_First, #_First) \
408  ._M_iterator(_Last, #_Last) \
409  ._M_string(#_Value))
410 
411 /** Verify that the iterator range [_First, _Last) is partitioned
412  w.r.t. the value _Value and predicate _Pred. */
413 #define __glibcxx_check_partitioned_lower_pred(_First,_Last,_Value,_Pred) \
414 __glibcxx_check_valid_range(_First,_Last); \
415 _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_partitioned_lower( \
416  __gnu_debug::__base(_First), \
417  __gnu_debug::__base(_Last), _Value, _Pred), \
418  _M_message(__gnu_debug::__msg_unpartitioned_pred) \
419  ._M_iterator(_First, #_First) \
420  ._M_iterator(_Last, #_Last) \
421  ._M_string(#_Pred) \
422  ._M_string(#_Value))
423 
424 /** Verify that the iterator range [_First, _Last) is partitioned
425  w.r.t. the value _Value and predicate _Pred. */
426 #define __glibcxx_check_partitioned_upper_pred(_First,_Last,_Value,_Pred) \
427 __glibcxx_check_valid_range(_First,_Last); \
428 _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_partitioned_upper( \
429  __gnu_debug::__base(_First), \
430  __gnu_debug::__base(_Last), _Value, _Pred), \
431  _M_message(__gnu_debug::__msg_unpartitioned_pred) \
432  ._M_iterator(_First, #_First) \
433  ._M_iterator(_Last, #_Last) \
434  ._M_string(#_Pred) \
435  ._M_string(#_Value))
436 
437 // Verify that the iterator range [_First, _Last) is a heap
438 #define __glibcxx_check_heap(_First,_Last) \
439  _GLIBCXX_DEBUG_VERIFY(std::__is_heap(__gnu_debug::__base(_First), \
440  __gnu_debug::__base(_Last)), \
441  _M_message(__gnu_debug::__msg_not_heap) \
442  ._M_iterator(_First, #_First) \
443  ._M_iterator(_Last, #_Last))
444 
445 /** Verify that the iterator range [_First, _Last) is a heap
446  w.r.t. the predicate _Pred. */
447 #define __glibcxx_check_heap_pred(_First,_Last,_Pred) \
448  _GLIBCXX_DEBUG_VERIFY(std::__is_heap(__gnu_debug::__base(_First), \
449  __gnu_debug::__base(_Last), \
450  _Pred), \
451  _M_message(__gnu_debug::__msg_not_heap_pred) \
452  ._M_iterator(_First, #_First) \
453  ._M_iterator(_Last, #_Last) \
454  ._M_string(#_Pred))
455 
456 // Verify that the container is not self move assigned
457 #define __glibcxx_check_self_move_assign(_Other) \
458 _GLIBCXX_DEBUG_VERIFY(this != &_Other, \
459  _M_message(__gnu_debug::__msg_self_move_assign) \
460  ._M_sequence(*this, "this"))
461 
462 // Verify that load factor is positive
463 #define __glibcxx_check_max_load_factor(_F) \
464 _GLIBCXX_DEBUG_VERIFY(_F > 0.0f, \
465  _M_message(__gnu_debug::__msg_valid_load_factor) \
466  ._M_sequence(*this, "this"))
467 
468 #define __glibcxx_check_equal_allocs(_This, _Other) \
469 _GLIBCXX_DEBUG_VERIFY(_This.get_allocator() == _Other.get_allocator(), \
470  _M_message(__gnu_debug::__msg_equal_allocs) \
471  ._M_sequence(_This, "this"))
472 
473 #define __glibcxx_check_string(_String) _GLIBCXX_DEBUG_PEDASSERT(_String != 0)
474 #define __glibcxx_check_string_len(_String,_Len) \
475  _GLIBCXX_DEBUG_PEDASSERT(_String != 0 || _Len == 0)
476 
477 #endif