1 // Debugging support implementation -*- C++ -*- 2 3 // Copyright (C) 2003-2013 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 #define _GLIBCXX_DEBUG_VERIFY_AT(_Condition,_ErrorMessage,_File,_Line) \ 42 do \ 43 { \ 44 if (! (_Condition)) \ 45 __gnu_debug::_Error_formatter::_M_at(_File, _Line) \ 46 ._ErrorMessage._M_error(); \ 47 } while (false) 48 49 #define _GLIBCXX_DEBUG_VERIFY(_Condition,_ErrorMessage) \ 50 _GLIBCXX_DEBUG_VERIFY_AT(_Condition,_ErrorMessage,__FILE__,__LINE__) 51 52 // Verify that [_First, _Last) forms a valid iterator range. 53 #define __glibcxx_check_valid_range(_First,_Last) \ 54 _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__valid_range(_First, _Last), \ 55 _M_message(__gnu_debug::__msg_valid_range) \ 56 ._M_iterator(_First, #_First) \ 57 ._M_iterator(_Last, #_Last)) 58 59 // Verify that [_First, _Last) forms a non-empty iterator range. 60 #define __glibcxx_check_non_empty_range(_First,_Last) \ 61 _GLIBCXX_DEBUG_VERIFY(_First != _Last, \ 62 _M_message(__gnu_debug::__msg_non_empty_range) \ 63 ._M_iterator(_First, #_First) \ 64 ._M_iterator(_Last, #_Last)) 65 66 /** Verify that we can insert into *this with the iterator _Position. 67 * Insertion into a container at a specific position requires that 68 * the iterator be nonsingular, either dereferenceable or past-the-end, 69 * and that it reference the sequence we are inserting into. Note that 70 * this macro is only valid when the container is a_Safe_sequence and 71 * the iterator is a _Safe_iterator. 72 */ 73 #define __glibcxx_check_insert(_Position) \ 74 _GLIBCXX_DEBUG_VERIFY(!_Position._M_singular(), \ 75 _M_message(__gnu_debug::__msg_insert_singular) \ 76 ._M_sequence(*this, "this") \ 77 ._M_iterator(_Position, #_Position)); \ 78 _GLIBCXX_DEBUG_VERIFY(_Position._M_attached_to(this), \ 79 _M_message(__gnu_debug::__msg_insert_different) \ 80 ._M_sequence(*this, "this") \ 81 ._M_iterator(_Position, #_Position)) 82 83 /** Verify that we can insert into *this after the iterator _Position. 84 * Insertion into a container after a specific position requires that 85 * the iterator be nonsingular, either dereferenceable or before-begin, 86 * and that it reference the sequence we are inserting into. Note that 87 * this macro is only valid when the container is a_Safe_sequence and 88 * the iterator is a _Safe_iterator. 89 */ 90 #define __glibcxx_check_insert_after(_Position) \ 91 __glibcxx_check_insert(_Position); \ 92 _GLIBCXX_DEBUG_VERIFY(!_Position._M_is_end(), \ 93 _M_message(__gnu_debug::__msg_insert_after_end) \ 94 ._M_sequence(*this, "this") \ 95 ._M_iterator(_Position, #_Position)) 96 97 /** Verify that we can insert the values in the iterator range 98 * [_First, _Last) into *this with the iterator _Position. Insertion 99 * into a container at a specific position requires that the iterator 100 * be nonsingular (i.e., either dereferenceable or past-the-end), 101 * that it reference the sequence we are inserting into, and that the 102 * iterator range [_First, Last) is a valid (possibly empty) 103 * range. Note that this macro is only valid when the container is a 104 * _Safe_sequence and the iterator is a _Safe_iterator. 105 * 106 * @todo We would like to be able to check for noninterference of 107 * _Position and the range [_First, _Last), but that can't (in 108 * general) be done. 109 */ 110 #define __glibcxx_check_insert_range(_Position,_First,_Last) \ 111 __glibcxx_check_valid_range(_First,_Last); \ 112 __glibcxx_check_insert(_Position) 113 114 /** Verify that we can insert the values in the iterator range 115 * [_First, _Last) into *this after the iterator _Position. Insertion 116 * into a container after a specific position requires that the iterator 117 * be nonsingular (i.e., either dereferenceable or past-the-end), 118 * that it reference the sequence we are inserting into, and that the 119 * iterator range [_First, Last) is a valid (possibly empty) 120 * range. Note that this macro is only valid when the container is a 121 * _Safe_sequence and the iterator is a _Safe_iterator. 122 * 123 * @todo We would like to be able to check for noninterference of 124 * _Position and the range [_First, _Last), but that can't (in 125 * general) be done. 126 */ 127 #define __glibcxx_check_insert_range_after(_Position,_First,_Last) \ 128 __glibcxx_check_valid_range(_First,_Last); \ 129 __glibcxx_check_insert_after(_Position) 130 131 /** Verify that we can erase the element referenced by the iterator 132 * _Position. We can erase the element if the _Position iterator is 133 * dereferenceable and references this sequence. 134 */ 135 #define __glibcxx_check_erase(_Position) \ 136 _GLIBCXX_DEBUG_VERIFY(_Position._M_dereferenceable(), \ 137 _M_message(__gnu_debug::__msg_erase_bad) \ 138 ._M_sequence(*this, "this") \ 139 ._M_iterator(_Position, #_Position)); \ 140 _GLIBCXX_DEBUG_VERIFY(_Position._M_attached_to(this), \ 141 _M_message(__gnu_debug::__msg_erase_different) \ 142 ._M_sequence(*this, "this") \ 143 ._M_iterator(_Position, #_Position)) 144 145 /** Verify that we can erase the element after the iterator 146 * _Position. We can erase the element if the _Position iterator is 147 * before a dereferenceable one and references this sequence. 148 */ 149 #define __glibcxx_check_erase_after(_Position) \ 150 _GLIBCXX_DEBUG_VERIFY(_Position._M_before_dereferenceable(), \ 151 _M_message(__gnu_debug::__msg_erase_after_bad) \ 152 ._M_sequence(*this, "this") \ 153 ._M_iterator(_Position, #_Position)); \ 154 _GLIBCXX_DEBUG_VERIFY(_Position._M_attached_to(this), \ 155 _M_message(__gnu_debug::__msg_erase_different) \ 156 ._M_sequence(*this, "this") \ 157 ._M_iterator(_Position, #_Position)) 158 159 /** Verify that we can erase the elements in the iterator range 160 * [_First, _Last). We can erase the elements if [_First, _Last) is a 161 * valid iterator range within this sequence. 162 */ 163 #define __glibcxx_check_erase_range(_First,_Last) \ 164 __glibcxx_check_valid_range(_First,_Last); \ 165 _GLIBCXX_DEBUG_VERIFY(_First._M_attached_to(this), \ 166 _M_message(__gnu_debug::__msg_erase_different) \ 167 ._M_sequence(*this, "this") \ 168 ._M_iterator(_First, #_First) \ 169 ._M_iterator(_Last, #_Last)) 170 171 /** Verify that we can erase the elements in the iterator range 172 * (_First, _Last). We can erase the elements if (_First, _Last) is a 173 * valid iterator range within this sequence. 174 */ 175 #define __glibcxx_check_erase_range_after(_First,_Last) \ 176 _GLIBCXX_DEBUG_VERIFY(_First._M_can_compare(_Last), \ 177 _M_message(__gnu_debug::__msg_erase_different) \ 178 ._M_sequence(*this, "this") \ 179 ._M_iterator(_First, #_First) \ 180 ._M_iterator(_Last, #_Last)); \ 181 _GLIBCXX_DEBUG_VERIFY(_First._M_attached_to(this), \ 182 _M_message(__gnu_debug::__msg_erase_different) \ 183 ._M_sequence(*this, "this") \ 184 ._M_iterator(_First, #_First)); \ 185 _GLIBCXX_DEBUG_VERIFY(_First != _Last, \ 186 _M_message(__gnu_debug::__msg_valid_range2) \ 187 ._M_sequence(*this, "this") \ 188 ._M_iterator(_First, #_First) \ 189 ._M_iterator(_Last, #_Last)); \ 190 _GLIBCXX_DEBUG_VERIFY(_First._M_incrementable(), \ 191 _M_message(__gnu_debug::__msg_valid_range2) \ 192 ._M_sequence(*this, "this") \ 193 ._M_iterator(_First, #_First) \ 194 ._M_iterator(_Last, #_Last)); \ 195 _GLIBCXX_DEBUG_VERIFY(!_Last._M_is_before_begin(), \ 196 _M_message(__gnu_debug::__msg_valid_range2) \ 197 ._M_sequence(*this, "this") \ 198 ._M_iterator(_First, #_First) \ 199 ._M_iterator(_Last, #_Last)) \ 200 201 // Verify that the subscript _N is less than the container's size. 202 #define __glibcxx_check_subscript(_N) \ 203 _GLIBCXX_DEBUG_VERIFY(_N < this->size(), \ 204 _M_message(__gnu_debug::__msg_subscript_oob) \ 205 ._M_sequence(*this, "this") \ 206 ._M_integer(_N, #_N) \ 207 ._M_integer(this->size(), "size")) 208 209 // Verify that the bucket _N is less than the container's buckets count. 210 #define __glibcxx_check_bucket_index(_N) \ 211 _GLIBCXX_DEBUG_VERIFY(_N < this->bucket_count(), \ 212 _M_message(__gnu_debug::__msg_bucket_index_oob) \ 213 ._M_sequence(*this, "this") \ 214 ._M_integer(_N, #_N) \ 215 ._M_integer(this->bucket_count(), "size")) 216 217 // Verify that the container is nonempty 218 #define __glibcxx_check_nonempty() \ 219 _GLIBCXX_DEBUG_VERIFY(! this->empty(), \ 220 _M_message(__gnu_debug::__msg_empty) \ 221 ._M_sequence(*this, "this")) 222 223 // Verify that the iterator range [_First, _Last) is sorted 224 #define __glibcxx_check_sorted(_First,_Last) \ 225 __glibcxx_check_valid_range(_First,_Last); \ 226 _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_sorted(_First, _Last), \ 227 _M_message(__gnu_debug::__msg_unsorted) \ 228 ._M_iterator(_First, #_First) \ 229 ._M_iterator(_Last, #_Last)) 230 231 /** Verify that the iterator range [_First, _Last) is sorted by the 232 predicate _Pred. */ 233 #define __glibcxx_check_sorted_pred(_First,_Last,_Pred) \ 234 __glibcxx_check_valid_range(_First,_Last); \ 235 _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_sorted(_First, _Last, _Pred), \ 236 _M_message(__gnu_debug::__msg_unsorted_pred) \ 237 ._M_iterator(_First, #_First) \ 238 ._M_iterator(_Last, #_Last) \ 239 ._M_string(#_Pred)) 240 241 // Special variant for std::merge, std::includes, std::set_* 242 #define __glibcxx_check_sorted_set(_First1,_Last1,_First2) \ 243 __glibcxx_check_valid_range(_First1,_Last1); \ 244 _GLIBCXX_DEBUG_VERIFY( \ 245 __gnu_debug::__check_sorted_set(_First1, _Last1, _First2), \ 246 _M_message(__gnu_debug::__msg_unsorted) \ 247 ._M_iterator(_First1, #_First1) \ 248 ._M_iterator(_Last1, #_Last1)) 249 250 // Likewise with a _Pred. 251 #define __glibcxx_check_sorted_set_pred(_First1,_Last1,_First2,_Pred) \ 252 __glibcxx_check_valid_range(_First1,_Last1); \ 253 _GLIBCXX_DEBUG_VERIFY( \ 254 __gnu_debug::__check_sorted_set(_First1, _Last1, _First2, _Pred), \ 255 _M_message(__gnu_debug::__msg_unsorted_pred) \ 256 ._M_iterator(_First1, #_First1) \ 257 ._M_iterator(_Last1, #_Last1) \ 258 ._M_string(#_Pred)) 259 260 /** Verify that the iterator range [_First, _Last) is partitioned 261 w.r.t. the value _Value. */ 262 #define __glibcxx_check_partitioned_lower(_First,_Last,_Value) \ 263 __glibcxx_check_valid_range(_First,_Last); \ 264 _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_partitioned_lower( \ 265 __gnu_debug::__base(_First), \ 266 __gnu_debug::__base(_Last), _Value), \ 267 _M_message(__gnu_debug::__msg_unpartitioned) \ 268 ._M_iterator(_First, #_First) \ 269 ._M_iterator(_Last, #_Last) \ 270 ._M_string(#_Value)) 271 272 #define __glibcxx_check_partitioned_upper(_First,_Last,_Value) \ 273 __glibcxx_check_valid_range(_First,_Last); \ 274 _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_partitioned_upper( \ 275 __gnu_debug::__base(_First), \ 276 __gnu_debug::__base(_Last), _Value), \ 277 _M_message(__gnu_debug::__msg_unpartitioned) \ 278 ._M_iterator(_First, #_First) \ 279 ._M_iterator(_Last, #_Last) \ 280 ._M_string(#_Value)) 281 282 /** Verify that the iterator range [_First, _Last) is partitioned 283 w.r.t. the value _Value and predicate _Pred. */ 284 #define __glibcxx_check_partitioned_lower_pred(_First,_Last,_Value,_Pred) \ 285 __glibcxx_check_valid_range(_First,_Last); \ 286 _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_partitioned_lower( \ 287 __gnu_debug::__base(_First), \ 288 __gnu_debug::__base(_Last), _Value, _Pred), \ 289 _M_message(__gnu_debug::__msg_unpartitioned_pred) \ 290 ._M_iterator(_First, #_First) \ 291 ._M_iterator(_Last, #_Last) \ 292 ._M_string(#_Pred) \ 293 ._M_string(#_Value)) 294 295 /** Verify that the iterator range [_First, _Last) is partitioned 296 w.r.t. the value _Value and predicate _Pred. */ 297 #define __glibcxx_check_partitioned_upper_pred(_First,_Last,_Value,_Pred) \ 298 __glibcxx_check_valid_range(_First,_Last); \ 299 _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_partitioned_upper( \ 300 __gnu_debug::__base(_First), \ 301 __gnu_debug::__base(_Last), _Value, _Pred), \ 302 _M_message(__gnu_debug::__msg_unpartitioned_pred) \ 303 ._M_iterator(_First, #_First) \ 304 ._M_iterator(_Last, #_Last) \ 305 ._M_string(#_Pred) \ 306 ._M_string(#_Value)) 307 308 // Verify that the iterator range [_First, _Last) is a heap 309 #define __glibcxx_check_heap(_First,_Last) \ 310 _GLIBCXX_DEBUG_VERIFY(std::__is_heap(__gnu_debug::__base(_First), \ 311 __gnu_debug::__base(_Last)), \ 312 _M_message(__gnu_debug::__msg_not_heap) \ 313 ._M_iterator(_First, #_First) \ 314 ._M_iterator(_Last, #_Last)) 315 316 /** Verify that the iterator range [_First, _Last) is a heap 317 w.r.t. the predicate _Pred. */ 318 #define __glibcxx_check_heap_pred(_First,_Last,_Pred) \ 319 _GLIBCXX_DEBUG_VERIFY(std::__is_heap(__gnu_debug::__base(_First), \ 320 __gnu_debug::__base(_Last), \ 321 _Pred), \ 322 _M_message(__gnu_debug::__msg_not_heap_pred) \ 323 ._M_iterator(_First, #_First) \ 324 ._M_iterator(_Last, #_Last) \ 325 ._M_string(#_Pred)) 326 327 // Verify that the container is not self move assigned 328 #define __glibcxx_check_self_move_assign(_Other) \ 329 _GLIBCXX_DEBUG_VERIFY(this != &_Other, \ 330 _M_message(__gnu_debug::__msg_self_move_assign) \ 331 ._M_sequence(*this, "this")) 332 333 // Verify that load factor is position 334 #define __glibcxx_check_max_load_factor(_F) \ 335 _GLIBCXX_DEBUG_VERIFY(_F > 0.0f, \ 336 _M_message(__gnu_debug::__msg_valid_load_factor) \ 337 ._M_sequence(*this, "this")) 338 339 #define __glibcxx_check_equal_allocs(_Other) \ 340 _GLIBCXX_DEBUG_VERIFY(this->get_allocator() == _Other.get_allocator(), \ 341 _M_message(__gnu_debug::__msg_equal_allocs) \ 342 ._M_sequence(*this, "this")) 343 344 #ifdef _GLIBCXX_DEBUG_PEDANTIC 345 # define __glibcxx_check_string(_String) _GLIBCXX_DEBUG_ASSERT(_String != 0) 346 # define __glibcxx_check_string_len(_String,_Len) \ 347 _GLIBCXX_DEBUG_ASSERT(_String != 0 || _Len == 0) 348 #else 349 # define __glibcxx_check_string(_String) 350 # define __glibcxx_check_string_len(_String,_Len) 351 #endif 352 353 #endif 354