libstdc++
macros.h
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1 // Debugging support implementation -*- C++ -*-
2 
3 // Copyright (C) 2003-2022 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
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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 #define _GLIBCXX_DEBUG_VERIFY_COND_AT(_Cond,_ErrMsg,_File,_Line,_Func) \
42  if (__builtin_expect(!bool(_Cond), false)) \
43  __gnu_debug::_Error_formatter::_S_at(_File, _Line, _Func) \
44  ._ErrMsg._M_error()
45 
46 #define _GLIBCXX_DEBUG_VERIFY_AT_F(_Cond,_ErrMsg,_File,_Line,_Func) \
47  do { \
48  __glibcxx_constexpr_assert(_Cond); \
49  _GLIBCXX_DEBUG_VERIFY_COND_AT(_Cond,_ErrMsg,_File,_Line,_Func); \
50  } while (false)
51 
52 #define _GLIBCXX_DEBUG_VERIFY_AT(_Cond,_ErrMsg,_File,_Line) \
53  _GLIBCXX_DEBUG_VERIFY_AT_F(_Cond,_ErrMsg,_File,_Line,__PRETTY_FUNCTION__)
54 
55 #define _GLIBCXX_DEBUG_VERIFY(_Cond,_ErrMsg) \
56  _GLIBCXX_DEBUG_VERIFY_AT_F(_Cond, _ErrMsg, __FILE__, __LINE__, \
57  __PRETTY_FUNCTION__)
58 
59 // Verify that [_First, _Last) forms a valid iterator range.
60 #define __glibcxx_check_valid_range(_First,_Last) \
61 _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__valid_range(_First, _Last), \
62  _M_message(__gnu_debug::__msg_valid_range) \
63  ._M_iterator(_First, #_First) \
64  ._M_iterator(_Last, #_Last))
65 
66 #define __glibcxx_check_valid_range_at(_First,_Last,_File,_Line,_Func) \
67 _GLIBCXX_DEBUG_VERIFY_AT_F(__gnu_debug::__valid_range(_First, _Last), \
68  _M_message(__gnu_debug::__msg_valid_range) \
69  ._M_iterator(_First, #_First) \
70  ._M_iterator(_Last, #_Last), \
71  _File,_Line,_Func)
72 
73 #define __glibcxx_check_valid_range2(_First,_Last,_Dist) \
74 _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__valid_range(_First, _Last, _Dist), \
75  _M_message(__gnu_debug::__msg_valid_range) \
76  ._M_iterator(_First, #_First) \
77  ._M_iterator(_Last, #_Last))
78 
79 #define __glibcxx_check_valid_constructor_range(_First,_Last) \
80  __gnu_debug::__check_valid_range(_First, _Last, \
81  __FILE__, __LINE__, __PRETTY_FUNCTION__)
82 
83 // Verify that [_First, _Last) forms a non-empty iterator range.
84 #define __glibcxx_check_non_empty_range(_First,_Last) \
85 _GLIBCXX_DEBUG_VERIFY(_First != _Last, \
86  _M_message(__gnu_debug::__msg_non_empty_range) \
87  ._M_iterator(_First, #_First) \
88  ._M_iterator(_Last, #_Last))
89 
90 // Verify that [_First, _First + _Size) forms a valid range.
91 #define __glibcxx_check_can_increment(_First,_Size) \
92 _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__can_advance(_First, _Size), \
93  _M_message(__gnu_debug::__msg_iter_subscript_oob) \
94  ._M_iterator(_First, #_First) \
95  ._M_integer(_Size, #_Size))
96 
97 #define __glibcxx_check_can_increment_dist(_First,_Dist,_Way) \
98  _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__can_advance(_First, _Dist, _Way), \
99  _M_message(__gnu_debug::__msg_iter_subscript_oob) \
100  ._M_iterator(_First, #_First) \
101  ._M_integer(_Way * _Dist.first, #_Dist))
102 
103 #define __glibcxx_check_can_increment_range(_First1,_Last1,_First2) \
104  do \
105  { \
106  typename __gnu_debug::_Distance_traits<__decltype(_First1)>::__type __dist;\
107  _GLIBCXX_DEBUG_VERIFY_AT_F( \
108  __gnu_debug::__valid_range(_First1, _Last1, __dist),\
109  _M_message(__gnu_debug::__msg_valid_range) \
110  ._M_iterator(_First1, #_First1) \
111  ._M_iterator(_Last1, #_Last1), \
112  __FILE__,__LINE__,__PRETTY_FUNCTION__); \
113  _GLIBCXX_DEBUG_VERIFY_AT_F( \
114  __gnu_debug::__can_advance(_First2, __dist, 1), \
115  _M_message(__gnu_debug::__msg_iter_subscript_oob)\
116  ._M_iterator(_First2, #_First2) \
117  ._M_integer(__dist.first), \
118  __FILE__,__LINE__,__PRETTY_FUNCTION__); \
119  } while(false)
120 
121 #define __glibcxx_check_can_decrement_range(_First1,_Last1,_First2) \
122  do \
123  { \
124  typename __gnu_debug::_Distance_traits<__decltype(_First1)>::__type __dist;\
125  _GLIBCXX_DEBUG_VERIFY_AT_F( \
126  __gnu_debug::__valid_range(_First1, _Last1, __dist),\
127  _M_message(__gnu_debug::__msg_valid_range) \
128  ._M_iterator(_First1, #_First1) \
129  ._M_iterator(_Last1, #_Last1), \
130  __FILE__,__LINE__,__PRETTY_FUNCTION__); \
131  _GLIBCXX_DEBUG_VERIFY_AT_F( \
132  __gnu_debug::__can_advance(_First2, __dist, -1), \
133  _M_message(__gnu_debug::__msg_iter_subscript_oob)\
134  ._M_iterator(_First2, #_First2) \
135  ._M_integer(-__dist.first), \
136  __FILE__,__LINE__,__PRETTY_FUNCTION__); \
137  } while(false)
138 
139 /** Verify that we can insert into *this with the iterator _Position.
140  * Insertion into a container at a specific position requires that
141  * the iterator be nonsingular, either dereferenceable or past-the-end,
142  * and that it reference the sequence we are inserting into. Note that
143  * this macro is only valid when the container is a_Safe_sequence and
144  * the iterator is a _Safe_iterator.
145 */
146 #define __glibcxx_check_insert(_Position) \
147 _GLIBCXX_DEBUG_VERIFY(!_Position._M_singular(), \
148  _M_message(__gnu_debug::__msg_insert_singular) \
149  ._M_sequence(*this, "this") \
150  ._M_iterator(_Position, #_Position)); \
151 _GLIBCXX_DEBUG_VERIFY(_Position._M_attached_to(this), \
152  _M_message(__gnu_debug::__msg_insert_different) \
153  ._M_sequence(*this, "this") \
154  ._M_iterator(_Position, #_Position))
155 
156 /** Verify that we can insert into *this after the iterator _Position.
157  * Insertion into a container after a specific position requires that
158  * the iterator be nonsingular, either dereferenceable or before-begin,
159  * and that it reference the sequence we are inserting into. Note that
160  * this macro is only valid when the container is a_Safe_sequence and
161  * the iterator is a _Safe_iterator.
162 */
163 #define __glibcxx_check_insert_after(_Position) \
164 __glibcxx_check_insert(_Position); \
165 _GLIBCXX_DEBUG_VERIFY(!_Position._M_is_end(), \
166  _M_message(__gnu_debug::__msg_insert_after_end) \
167  ._M_sequence(*this, "this") \
168  ._M_iterator(_Position, #_Position))
169 
170 /** Verify that we can insert the values in the iterator range
171  * [_First, _Last) into *this with the iterator _Position. Insertion
172  * into a container at a specific position requires that the iterator
173  * be nonsingular (i.e., either dereferenceable or past-the-end),
174  * that it reference the sequence we are inserting into, and that the
175  * iterator range [_First, _Last) is a valid (possibly empty)
176  * range which does not reference the sequence we are inserting into.
177  * Note that this macro is only valid when the container is a
178  * _Safe_sequence and the _Position iterator is a _Safe_iterator.
179 */
180 #define __glibcxx_check_insert_range(_Position,_First,_Last,_Dist) \
181 __glibcxx_check_valid_range2(_First,_Last,_Dist); \
182 __glibcxx_check_insert(_Position); \
183 _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__foreign_iterator(_Position,_First,_Last),\
184  _M_message(__gnu_debug::__msg_insert_range_from_self)\
185  ._M_iterator(_First, #_First) \
186  ._M_iterator(_Last, #_Last) \
187  ._M_sequence(*this, "this"))
188 
189 /** Verify that we can insert the values in the iterator range
190  * [_First, _Last) into *this after the iterator _Position. Insertion
191  * into a container after a specific position requires that the iterator
192  * be nonsingular (i.e., either dereferenceable or past-the-end),
193  * that it reference the sequence we are inserting into, and that the
194  * iterator range [_First, _Last) is a valid (possibly empty)
195  * range which does not reference the sequence we are inserting into.
196  * Note that this macro is only valid when the container is a
197  * _Safe_sequence and the _Position iterator is a _Safe_iterator.
198 */
199 #define __glibcxx_check_insert_range_after(_Position,_First,_Last,_Dist)\
200 __glibcxx_check_valid_range2(_First,_Last,_Dist); \
201 __glibcxx_check_insert_after(_Position); \
202 _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__foreign_iterator(_Position,_First,_Last),\
203  _M_message(__gnu_debug::__msg_insert_range_from_self)\
204  ._M_iterator(_First, #_First) \
205  ._M_iterator(_Last, #_Last) \
206  ._M_sequence(*this, "this"))
207 
208 /** Verify that we can erase the element referenced by the iterator
209  * _Position. We can erase the element if the _Position iterator is
210  * dereferenceable and references this sequence.
211 */
212 #define __glibcxx_check_erase(_Position) \
213 _GLIBCXX_DEBUG_VERIFY(_Position._M_dereferenceable(), \
214  _M_message(__gnu_debug::__msg_erase_bad) \
215  ._M_sequence(*this, "this") \
216  ._M_iterator(_Position, #_Position)); \
217 _GLIBCXX_DEBUG_VERIFY(_Position._M_attached_to(this), \
218  _M_message(__gnu_debug::__msg_erase_different) \
219  ._M_sequence(*this, "this") \
220  ._M_iterator(_Position, #_Position))
221 
222 #if __cplusplus >= 201103L
223 # define __glibcxx_check_erase2(_CPosition) \
224 _GLIBCXX_DEBUG_VERIFY(_CPosition != _M_base().cend(), \
225  _M_message(__gnu_debug::__msg_erase_bad) \
226  ._M_sequence(*this, "this") \
227  ._M_iterator(_CPosition, #_CPosition));
228 #endif
229 
230 /** Verify that we can erase the element after the iterator
231  * _Position. We can erase the element if the _Position iterator is
232  * before a dereferenceable one and references this sequence.
233 */
234 #define __glibcxx_check_erase_after(_Position) \
235 _GLIBCXX_DEBUG_VERIFY(_Position._M_before_dereferenceable(), \
236  _M_message(__gnu_debug::__msg_erase_after_bad) \
237  ._M_sequence(*this, "this") \
238  ._M_iterator(_Position, #_Position)); \
239 _GLIBCXX_DEBUG_VERIFY(_Position._M_attached_to(this), \
240  _M_message(__gnu_debug::__msg_erase_different) \
241  ._M_sequence(*this, "this") \
242  ._M_iterator(_Position, #_Position))
243 
244 /** Verify that we can erase the elements in the iterator range
245  * [_First, _Last). We can erase the elements if [_First, _Last) is a
246  * valid iterator range within this sequence.
247 */
248 #define __glibcxx_check_erase_range(_First,_Last) \
249 __glibcxx_check_valid_range(_First,_Last); \
250 _GLIBCXX_DEBUG_VERIFY(_First._M_attached_to(this), \
251  _M_message(__gnu_debug::__msg_erase_different) \
252  ._M_sequence(*this, "this") \
253  ._M_iterator(_First, #_First) \
254  ._M_iterator(_Last, #_Last))
255 
256 /** Verify that we can erase the elements in the iterator range
257  * (_First, _Last). We can erase the elements if (_First, _Last) is a
258  * valid iterator range within this sequence.
259 */
260 #define __glibcxx_check_erase_range_after(_First,_Last) \
261 _GLIBCXX_DEBUG_VERIFY(!_First._M_singular() && !_Last._M_singular(), \
262  _M_message(__gnu_debug::__msg_erase_different) \
263  ._M_sequence(*this, "this") \
264  ._M_iterator(_First, #_First) \
265  ._M_iterator(_Last, #_Last)); \
266 _GLIBCXX_DEBUG_VERIFY(_First._M_can_compare(_Last), \
267  _M_message(__gnu_debug::__msg_erase_different) \
268  ._M_sequence(*this, "this") \
269  ._M_iterator(_First, #_First) \
270  ._M_iterator(_Last, #_Last)); \
271 _GLIBCXX_DEBUG_VERIFY(_First._M_attached_to(this), \
272  _M_message(__gnu_debug::__msg_erase_different) \
273  ._M_sequence(*this, "this") \
274  ._M_iterator(_First, #_First)); \
275 _GLIBCXX_DEBUG_VERIFY(_First != _Last, \
276  _M_message(__gnu_debug::__msg_valid_range2) \
277  ._M_sequence(*this, "this") \
278  ._M_iterator(_First, #_First) \
279  ._M_iterator(_Last, #_Last)); \
280 _GLIBCXX_DEBUG_VERIFY(_First._M_incrementable(), \
281  _M_message(__gnu_debug::__msg_valid_range2) \
282  ._M_sequence(*this, "this") \
283  ._M_iterator(_First, #_First) \
284  ._M_iterator(_Last, #_Last)); \
285 _GLIBCXX_DEBUG_VERIFY(!_Last._M_is_before_begin(), \
286  _M_message(__gnu_debug::__msg_valid_range2) \
287  ._M_sequence(*this, "this") \
288  ._M_iterator(_First, #_First) \
289  ._M_iterator(_Last, #_Last)) \
290 
291 // Verify that the subscript _N is less than the container's size.
292 #define __glibcxx_check_subscript(_N) \
293 _GLIBCXX_DEBUG_VERIFY(_N < this->size(), \
294  _M_message(__gnu_debug::__msg_subscript_oob) \
295  ._M_sequence(*this, "this") \
296  ._M_integer(_N, #_N) \
297  ._M_integer(this->size(), "size"))
298 
299 // Verify that the bucket _N is less than the container's buckets count.
300 #define __glibcxx_check_bucket_index(_N) \
301 _GLIBCXX_DEBUG_VERIFY(_N < this->bucket_count(), \
302  _M_message(__gnu_debug::__msg_bucket_index_oob) \
303  ._M_sequence(*this, "this") \
304  ._M_integer(_N, #_N) \
305  ._M_integer(this->bucket_count(), "size"))
306 
307 // Verify that the container is nonempty
308 #define __glibcxx_check_nonempty() \
309 _GLIBCXX_DEBUG_VERIFY(! this->empty(), \
310  _M_message(__gnu_debug::__msg_empty) \
311  ._M_sequence(*this, "this"))
312 
313 // Verify that a predicate is irreflexive
314 #define __glibcxx_check_irreflexive(_First,_Last) \
315  _GLIBCXX_DEBUG_VERIFY(_First == _Last || !(*_First < *_First), \
316  _M_message(__gnu_debug::__msg_irreflexive_ordering) \
317  ._M_iterator_value_type(_First, "< operator type"))
318 
319 #if __cplusplus >= 201103L
320 # define __glibcxx_check_irreflexive2(_First,_Last) \
321  _GLIBCXX_DEBUG_VERIFY(_First == _Last \
322  || __gnu_debug::__is_irreflexive(_First), \
323  _M_message(__gnu_debug::__msg_irreflexive_ordering) \
324  ._M_iterator_value_type(_First, "< operator type"))
325 #else
326 # define __glibcxx_check_irreflexive2(_First,_Last)
327 #endif
328 
329 #define __glibcxx_check_irreflexive_pred(_First,_Last,_Pred) \
330  _GLIBCXX_DEBUG_VERIFY(_First == _Last || !_Pred(*_First, *_First), \
331  _M_message(__gnu_debug::__msg_irreflexive_ordering) \
332  ._M_instance(_Pred, "functor") \
333  ._M_iterator_value_type(_First, "ordered type"))
334 
335 #if __cplusplus >= 201103L
336 # define __glibcxx_check_irreflexive_pred2(_First,_Last,_Pred) \
337  _GLIBCXX_DEBUG_VERIFY(_First == _Last \
338  ||__gnu_debug::__is_irreflexive_pred(_First, _Pred), \
339  _M_message(__gnu_debug::__msg_irreflexive_ordering) \
340  ._M_instance(_Pred, "functor") \
341  ._M_iterator_value_type(_First, "ordered type"))
342 #else
343 # define __glibcxx_check_irreflexive_pred2(_First,_Last,_Pred)
344 #endif
345 
346 // Verify that the iterator range [_First, _Last) is sorted
347 #define __glibcxx_check_sorted(_First,_Last) \
348 __glibcxx_check_valid_range(_First,_Last); \
349 __glibcxx_check_irreflexive(_First,_Last); \
350  _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_sorted( \
351  __gnu_debug::__base(_First), \
352  __gnu_debug::__base(_Last)), \
353  _M_message(__gnu_debug::__msg_unsorted) \
354  ._M_iterator(_First, #_First) \
355  ._M_iterator(_Last, #_Last))
356 
357 /** Verify that the iterator range [_First, _Last) is sorted by the
358  predicate _Pred. */
359 #define __glibcxx_check_sorted_pred(_First,_Last,_Pred) \
360 __glibcxx_check_valid_range(_First,_Last); \
361 __glibcxx_check_irreflexive_pred(_First,_Last,_Pred); \
362 _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_sorted( \
363  __gnu_debug::__base(_First), \
364  __gnu_debug::__base(_Last), _Pred), \
365  _M_message(__gnu_debug::__msg_unsorted_pred) \
366  ._M_iterator(_First, #_First) \
367  ._M_iterator(_Last, #_Last) \
368  ._M_string(#_Pred))
369 
370 // Special variant for std::merge, std::includes, std::set_*
371 #define __glibcxx_check_sorted_set(_First1,_Last1,_First2) \
372 __glibcxx_check_valid_range(_First1,_Last1); \
373 _GLIBCXX_DEBUG_VERIFY( \
374  __gnu_debug::__check_sorted_set(__gnu_debug::__base(_First1), \
375  __gnu_debug::__base(_Last1), _First2),\
376  _M_message(__gnu_debug::__msg_unsorted) \
377  ._M_iterator(_First1, #_First1) \
378  ._M_iterator(_Last1, #_Last1))
379 
380 // Likewise with a _Pred.
381 #define __glibcxx_check_sorted_set_pred(_First1,_Last1,_First2,_Pred) \
382 __glibcxx_check_valid_range(_First1,_Last1); \
383 _GLIBCXX_DEBUG_VERIFY( \
384  __gnu_debug::__check_sorted_set(__gnu_debug::__base(_First1), \
385  __gnu_debug::__base(_Last1), \
386  _First2, _Pred), \
387  _M_message(__gnu_debug::__msg_unsorted_pred) \
388  ._M_iterator(_First1, #_First1) \
389  ._M_iterator(_Last1, #_Last1) \
390  ._M_string(#_Pred))
391 
392 /** Verify that the iterator range [_First, _Last) is partitioned
393  w.r.t. the value _Value. */
394 #define __glibcxx_check_partitioned_lower(_First,_Last,_Value) \
395 __glibcxx_check_valid_range(_First,_Last); \
396 _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_partitioned_lower( \
397  __gnu_debug::__base(_First), \
398  __gnu_debug::__base(_Last), _Value), \
399  _M_message(__gnu_debug::__msg_unpartitioned) \
400  ._M_iterator(_First, #_First) \
401  ._M_iterator(_Last, #_Last) \
402  ._M_string(#_Value))
403 
404 #define __glibcxx_check_partitioned_upper(_First,_Last,_Value) \
405 __glibcxx_check_valid_range(_First,_Last); \
406 _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_partitioned_upper( \
407  __gnu_debug::__base(_First), \
408  __gnu_debug::__base(_Last), _Value), \
409  _M_message(__gnu_debug::__msg_unpartitioned) \
410  ._M_iterator(_First, #_First) \
411  ._M_iterator(_Last, #_Last) \
412  ._M_string(#_Value))
413 
414 /** Verify that the iterator range [_First, _Last) is partitioned
415  w.r.t. the value _Value and predicate _Pred. */
416 #define __glibcxx_check_partitioned_lower_pred(_First,_Last,_Value,_Pred) \
417 __glibcxx_check_valid_range(_First,_Last); \
418 _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_partitioned_lower( \
419  __gnu_debug::__base(_First), \
420  __gnu_debug::__base(_Last), _Value, _Pred), \
421  _M_message(__gnu_debug::__msg_unpartitioned_pred) \
422  ._M_iterator(_First, #_First) \
423  ._M_iterator(_Last, #_Last) \
424  ._M_string(#_Pred) \
425  ._M_string(#_Value))
426 
427 /** Verify that the iterator range [_First, _Last) is partitioned
428  w.r.t. the value _Value and predicate _Pred. */
429 #define __glibcxx_check_partitioned_upper_pred(_First,_Last,_Value,_Pred) \
430 __glibcxx_check_valid_range(_First,_Last); \
431 _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_partitioned_upper( \
432  __gnu_debug::__base(_First), \
433  __gnu_debug::__base(_Last), _Value, _Pred), \
434  _M_message(__gnu_debug::__msg_unpartitioned_pred) \
435  ._M_iterator(_First, #_First) \
436  ._M_iterator(_Last, #_Last) \
437  ._M_string(#_Pred) \
438  ._M_string(#_Value))
439 
440 // Verify that the iterator range [_First, _Last) is a heap
441 #define __glibcxx_check_heap(_First,_Last) \
442  _GLIBCXX_DEBUG_VERIFY(std::__is_heap(__gnu_debug::__base(_First), \
443  __gnu_debug::__base(_Last)), \
444  _M_message(__gnu_debug::__msg_not_heap) \
445  ._M_iterator(_First, #_First) \
446  ._M_iterator(_Last, #_Last))
447 
448 /** Verify that the iterator range [_First, _Last) is a heap
449  w.r.t. the predicate _Pred. */
450 #define __glibcxx_check_heap_pred(_First,_Last,_Pred) \
451  _GLIBCXX_DEBUG_VERIFY(std::__is_heap(__gnu_debug::__base(_First), \
452  __gnu_debug::__base(_Last), \
453  _Pred), \
454  _M_message(__gnu_debug::__msg_not_heap_pred) \
455  ._M_iterator(_First, #_First) \
456  ._M_iterator(_Last, #_Last) \
457  ._M_string(#_Pred))
458 
459 // Verify that load factor is positive
460 #define __glibcxx_check_max_load_factor(_F) \
461 _GLIBCXX_DEBUG_VERIFY(_F > 0.0f, \
462  _M_message(__gnu_debug::__msg_valid_load_factor) \
463  ._M_sequence(*this, "this"))
464 
465 #define __glibcxx_check_equal_allocs(_This, _Other) \
466 _GLIBCXX_DEBUG_VERIFY(_This.get_allocator() == _Other.get_allocator(), \
467  _M_message(__gnu_debug::__msg_equal_allocs) \
468  ._M_sequence(_This, "this"))
469 
470 #define __glibcxx_check_string(_String) _GLIBCXX_DEBUG_PEDASSERT(_String != 0)
471 #define __glibcxx_check_string_len(_String,_Len) \
472  _GLIBCXX_DEBUG_PEDASSERT(_String != 0 || _Len == 0)
473 
474 #endif