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