// Debugging support implementation -*- C++ -*- // Copyright (C) 2003-2020 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 3, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // Under Section 7 of GPL version 3, you are granted additional // permissions described in the GCC Runtime Library Exception, version // 3.1, as published by the Free Software Foundation. // You should have received a copy of the GNU General Public License and // a copy of the GCC Runtime Library Exception along with this program; // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see // <http://www.gnu.org/licenses/>. /** @file debug/macros.h * This file is a GNU debug extension to the Standard C++ Library. */ #ifndef _GLIBCXX_DEBUG_MACROS_H #define _GLIBCXX_DEBUG_MACROS_H 1 /** * Macros used by the implementation to verify certain * properties. These macros may only be used directly by the debug * wrappers. Note that these are macros (instead of the more obviously * @a correct choice of making them functions) because we need line and * file information at the call site, to minimize the distance between * the user error and where the error is reported. * */ #if 0 /* defined _GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED */ # define _GLIBCXX_DEBUG_VERIFY_COND_AT(_Cond,_ErrMsg,_File,_Line,_Func) \ if (__builtin_is_constant_evaluated()) \ /* FIXME: Compilation error here when !_Cond. */ \ break; \ if (! (_Cond)) \ __gnu_debug::_Error_formatter::_S_at(_File, _Line, _Func) \ ._ErrMsg._M_error() #else # define _GLIBCXX_DEBUG_VERIFY_COND_AT(_Cond,_ErrMsg,_File,_Line,_Func) \ if (! (_Cond)) \ __gnu_debug::_Error_formatter::_S_at(_File, _Line, _Func) \ ._ErrMsg._M_error() #endif #define _GLIBCXX_DEBUG_VERIFY_AT_F(_Cond,_ErrMsg,_File,_Line,_Func) \ do \ { \ _GLIBCXX_DEBUG_VERIFY_COND_AT(_Cond,_ErrMsg,_File,_Line,_Func); \ } while (false) #define _GLIBCXX_DEBUG_VERIFY_AT(_Cond,_ErrMsg,_File,_Line) \ _GLIBCXX_DEBUG_VERIFY_AT_F(_Cond,_ErrMsg,_File,_Line,__PRETTY_FUNCTION__) #define _GLIBCXX_DEBUG_VERIFY(_Cond,_ErrMsg) \ _GLIBCXX_DEBUG_VERIFY_AT_F(_Cond, _ErrMsg, __FILE__, __LINE__, \ __PRETTY_FUNCTION__) // Verify that [_First, _Last) forms a valid iterator range. #define __glibcxx_check_valid_range(_First,_Last) \ _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__valid_range(_First, _Last), \ _M_message(__gnu_debug::__msg_valid_range) \ ._M_iterator(_First, #_First) \ ._M_iterator(_Last, #_Last)) #define __glibcxx_check_valid_range_at(_First,_Last,_File,_Line,_Func) \ _GLIBCXX_DEBUG_VERIFY_AT_F(__gnu_debug::__valid_range(_First, _Last), \ _M_message(__gnu_debug::__msg_valid_range) \ ._M_iterator(_First, #_First) \ ._M_iterator(_Last, #_Last), \ _File,_Line,_Func) #define __glibcxx_check_valid_range2(_First,_Last,_Dist) \ _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__valid_range(_First, _Last, _Dist), \ _M_message(__gnu_debug::__msg_valid_range) \ ._M_iterator(_First, #_First) \ ._M_iterator(_Last, #_Last)) #define __glibcxx_check_valid_constructor_range(_First,_Last) \ __gnu_debug::__check_valid_range(_First, _Last, \ __FILE__, __LINE__, __PRETTY_FUNCTION__) // Verify that [_First, _Last) forms a non-empty iterator range. #define __glibcxx_check_non_empty_range(_First,_Last) \ _GLIBCXX_DEBUG_VERIFY(_First != _Last, \ _M_message(__gnu_debug::__msg_non_empty_range) \ ._M_iterator(_First, #_First) \ ._M_iterator(_Last, #_Last)) // Verify that [_First, _First + _Size) forms a valid range. #define __glibcxx_check_can_increment(_First,_Size) \ _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__can_advance(_First, _Size), \ _M_message(__gnu_debug::__msg_iter_subscript_oob) \ ._M_iterator(_First, #_First) \ ._M_integer(_Size, #_Size)) #define __glibcxx_check_can_increment_range(_First1,_Last1,_First2) \ do \ { \ typename __gnu_debug::_Distance_traits<__decltype(_First1)>::__type __dist;\ _GLIBCXX_DEBUG_VERIFY_COND_AT( \ __gnu_debug::__valid_range(_First1, _Last1, __dist),\ _M_message(__gnu_debug::__msg_valid_range) \ ._M_iterator(_First1, #_First1) \ ._M_iterator(_Last1, #_Last1), \ __FILE__,__LINE__,__PRETTY_FUNCTION__); \ _GLIBCXX_DEBUG_VERIFY_COND_AT( \ __gnu_debug::__can_advance(_First2, __dist.first),\ _M_message(__gnu_debug::__msg_iter_subscript_oob)\ ._M_iterator(_First2, #_First2) \ ._M_integer(__dist.first), \ __FILE__,__LINE__,__PRETTY_FUNCTION__); \ } while(false) #define __glibcxx_check_can_decrement_range(_First1,_Last1,_First2) \ do \ { \ typename __gnu_debug::_Distance_traits<__decltype(_First1)>::__type __dist;\ _GLIBCXX_DEBUG_VERIFY_COND_AT( \ __gnu_debug::__valid_range(_First1, _Last1, __dist),\ _M_message(__gnu_debug::__msg_valid_range) \ ._M_iterator(_First1, #_First1) \ ._M_iterator(_Last1, #_Last1), \ __FILE__,__LINE__,__PRETTY_FUNCTION__); \ _GLIBCXX_DEBUG_VERIFY_COND_AT( \ __gnu_debug::__can_advance(_First2, -__dist.first),\ _M_message(__gnu_debug::__msg_iter_subscript_oob)\ ._M_iterator(_First2, #_First2) \ ._M_integer(-__dist.first), \ __FILE__,__LINE__,__PRETTY_FUNCTION__); \ } while(false) /** Verify that we can insert into *this with the iterator _Position. * Insertion into a container at a specific position requires that * the iterator be nonsingular, either dereferenceable or past-the-end, * and that it reference the sequence we are inserting into. Note that * this macro is only valid when the container is a_Safe_sequence and * the iterator is a _Safe_iterator. */ #define __glibcxx_check_insert(_Position) \ _GLIBCXX_DEBUG_VERIFY(!_Position._M_singular(), \ _M_message(__gnu_debug::__msg_insert_singular) \ ._M_sequence(*this, "this") \ ._M_iterator(_Position, #_Position)); \ _GLIBCXX_DEBUG_VERIFY(_Position._M_attached_to(this), \ _M_message(__gnu_debug::__msg_insert_different) \ ._M_sequence(*this, "this") \ ._M_iterator(_Position, #_Position)) /** Verify that we can insert into *this after the iterator _Position. * Insertion into a container after a specific position requires that * the iterator be nonsingular, either dereferenceable or before-begin, * and that it reference the sequence we are inserting into. Note that * this macro is only valid when the container is a_Safe_sequence and * the iterator is a _Safe_iterator. */ #define __glibcxx_check_insert_after(_Position) \ __glibcxx_check_insert(_Position); \ _GLIBCXX_DEBUG_VERIFY(!_Position._M_is_end(), \ _M_message(__gnu_debug::__msg_insert_after_end) \ ._M_sequence(*this, "this") \ ._M_iterator(_Position, #_Position)) /** Verify that we can insert the values in the iterator range * [_First, _Last) into *this with the iterator _Position. Insertion * into a container at a specific position requires that the iterator * be nonsingular (i.e., either dereferenceable or past-the-end), * that it reference the sequence we are inserting into, and that the * iterator range [_First, _Last) is a valid (possibly empty) * range which does not reference the sequence we are inserting into. * Note that this macro is only valid when the container is a * _Safe_sequence and the _Position iterator is a _Safe_iterator. */ #define __glibcxx_check_insert_range(_Position,_First,_Last,_Dist) \ __glibcxx_check_valid_range2(_First,_Last,_Dist); \ __glibcxx_check_insert(_Position); \ _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__foreign_iterator(_Position,_First,_Last),\ _M_message(__gnu_debug::__msg_insert_range_from_self)\ ._M_iterator(_First, #_First) \ ._M_iterator(_Last, #_Last) \ ._M_sequence(*this, "this")) /** Verify that we can insert the values in the iterator range * [_First, _Last) into *this after the iterator _Position. Insertion * into a container after a specific position requires that the iterator * be nonsingular (i.e., either dereferenceable or past-the-end), * that it reference the sequence we are inserting into, and that the * iterator range [_First, _Last) is a valid (possibly empty) * range which does not reference the sequence we are inserting into. * Note that this macro is only valid when the container is a * _Safe_sequence and the _Position iterator is a _Safe_iterator. */ #define __glibcxx_check_insert_range_after(_Position,_First,_Last,_Dist)\ __glibcxx_check_valid_range2(_First,_Last,_Dist); \ __glibcxx_check_insert_after(_Position); \ _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__foreign_iterator(_Position,_First,_Last),\ _M_message(__gnu_debug::__msg_insert_range_from_self)\ ._M_iterator(_First, #_First) \ ._M_iterator(_Last, #_Last) \ ._M_sequence(*this, "this")) /** Verify that we can erase the element referenced by the iterator * _Position. We can erase the element if the _Position iterator is * dereferenceable and references this sequence. */ #define __glibcxx_check_erase(_Position) \ _GLIBCXX_DEBUG_VERIFY(_Position._M_dereferenceable(), \ _M_message(__gnu_debug::__msg_erase_bad) \ ._M_sequence(*this, "this") \ ._M_iterator(_Position, #_Position)); \ _GLIBCXX_DEBUG_VERIFY(_Position._M_attached_to(this), \ _M_message(__gnu_debug::__msg_erase_different) \ ._M_sequence(*this, "this") \ ._M_iterator(_Position, #_Position)) /** Verify that we can erase the element after the iterator * _Position. We can erase the element if the _Position iterator is * before a dereferenceable one and references this sequence. */ #define __glibcxx_check_erase_after(_Position) \ _GLIBCXX_DEBUG_VERIFY(_Position._M_before_dereferenceable(), \ _M_message(__gnu_debug::__msg_erase_after_bad) \ ._M_sequence(*this, "this") \ ._M_iterator(_Position, #_Position)); \ _GLIBCXX_DEBUG_VERIFY(_Position._M_attached_to(this), \ _M_message(__gnu_debug::__msg_erase_different) \ ._M_sequence(*this, "this") \ ._M_iterator(_Position, #_Position)) /** Verify that we can erase the elements in the iterator range * [_First, _Last). We can erase the elements if [_First, _Last) is a * valid iterator range within this sequence. */ #define __glibcxx_check_erase_range(_First,_Last) \ __glibcxx_check_valid_range(_First,_Last); \ _GLIBCXX_DEBUG_VERIFY(_First._M_attached_to(this), \ _M_message(__gnu_debug::__msg_erase_different) \ ._M_sequence(*this, "this") \ ._M_iterator(_First, #_First) \ ._M_iterator(_Last, #_Last)) /** Verify that we can erase the elements in the iterator range * (_First, _Last). We can erase the elements if (_First, _Last) is a * valid iterator range within this sequence. */ #define __glibcxx_check_erase_range_after(_First,_Last) \ _GLIBCXX_DEBUG_VERIFY(_First._M_can_compare(_Last), \ _M_message(__gnu_debug::__msg_erase_different) \ ._M_sequence(*this, "this") \ ._M_iterator(_First, #_First) \ ._M_iterator(_Last, #_Last)); \ _GLIBCXX_DEBUG_VERIFY(_First._M_attached_to(this), \ _M_message(__gnu_debug::__msg_erase_different) \ ._M_sequence(*this, "this") \ ._M_iterator(_First, #_First)); \ _GLIBCXX_DEBUG_VERIFY(_First != _Last, \ _M_message(__gnu_debug::__msg_valid_range2) \ ._M_sequence(*this, "this") \ ._M_iterator(_First, #_First) \ ._M_iterator(_Last, #_Last)); \ _GLIBCXX_DEBUG_VERIFY(_First._M_incrementable(), \ _M_message(__gnu_debug::__msg_valid_range2) \ ._M_sequence(*this, "this") \ ._M_iterator(_First, #_First) \ ._M_iterator(_Last, #_Last)); \ _GLIBCXX_DEBUG_VERIFY(!_Last._M_is_before_begin(), \ _M_message(__gnu_debug::__msg_valid_range2) \ ._M_sequence(*this, "this") \ ._M_iterator(_First, #_First) \ ._M_iterator(_Last, #_Last)) \ // Verify that the subscript _N is less than the container's size. #define __glibcxx_check_subscript(_N) \ _GLIBCXX_DEBUG_VERIFY(_N < this->size(), \ _M_message(__gnu_debug::__msg_subscript_oob) \ ._M_sequence(*this, "this") \ ._M_integer(_N, #_N) \ ._M_integer(this->size(), "size")) // Verify that the bucket _N is less than the container's buckets count. #define __glibcxx_check_bucket_index(_N) \ _GLIBCXX_DEBUG_VERIFY(_N < this->bucket_count(), \ _M_message(__gnu_debug::__msg_bucket_index_oob) \ ._M_sequence(*this, "this") \ ._M_integer(_N, #_N) \ ._M_integer(this->bucket_count(), "size")) // Verify that the container is nonempty #define __glibcxx_check_nonempty() \ _GLIBCXX_DEBUG_VERIFY(! this->empty(), \ _M_message(__gnu_debug::__msg_empty) \ ._M_sequence(*this, "this")) // Verify that a predicate is irreflexive #define __glibcxx_check_irreflexive(_First,_Last) \ _GLIBCXX_DEBUG_VERIFY(_First == _Last || !(*_First < *_First), \ _M_message(__gnu_debug::__msg_irreflexive_ordering) \ ._M_iterator_value_type(_First, "< operator type")) #if __cplusplus >= 201103L # define __glibcxx_check_irreflexive2(_First,_Last) \ _GLIBCXX_DEBUG_VERIFY(_First == _Last \ || __gnu_debug::__is_irreflexive(_First), \ _M_message(__gnu_debug::__msg_irreflexive_ordering) \ ._M_iterator_value_type(_First, "< operator type")) #else # define __glibcxx_check_irreflexive2(_First,_Last) #endif #define __glibcxx_check_irreflexive_pred(_First,_Last,_Pred) \ _GLIBCXX_DEBUG_VERIFY(_First == _Last || !_Pred(*_First, *_First), \ _M_message(__gnu_debug::__msg_irreflexive_ordering) \ ._M_instance(_Pred, "functor") \ ._M_iterator_value_type(_First, "ordered type")) #if __cplusplus >= 201103L # define __glibcxx_check_irreflexive_pred2(_First,_Last,_Pred) \ _GLIBCXX_DEBUG_VERIFY(_First == _Last \ ||__gnu_debug::__is_irreflexive_pred(_First, _Pred), \ _M_message(__gnu_debug::__msg_irreflexive_ordering) \ ._M_instance(_Pred, "functor") \ ._M_iterator_value_type(_First, "ordered type")) #else # define __glibcxx_check_irreflexive_pred2(_First,_Last,_Pred) #endif // Verify that the iterator range [_First, _Last) is sorted #define __glibcxx_check_sorted(_First,_Last) \ __glibcxx_check_valid_range(_First,_Last); \ __glibcxx_check_irreflexive(_First,_Last); \ _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_sorted( \ __gnu_debug::__base(_First), \ __gnu_debug::__base(_Last)), \ _M_message(__gnu_debug::__msg_unsorted) \ ._M_iterator(_First, #_First) \ ._M_iterator(_Last, #_Last)) /** Verify that the iterator range [_First, _Last) is sorted by the predicate _Pred. */ #define __glibcxx_check_sorted_pred(_First,_Last,_Pred) \ __glibcxx_check_valid_range(_First,_Last); \ __glibcxx_check_irreflexive_pred(_First,_Last,_Pred); \ _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_sorted( \ __gnu_debug::__base(_First), \ __gnu_debug::__base(_Last), _Pred), \ _M_message(__gnu_debug::__msg_unsorted_pred) \ ._M_iterator(_First, #_First) \ ._M_iterator(_Last, #_Last) \ ._M_string(#_Pred)) // Special variant for std::merge, std::includes, std::set_* #define __glibcxx_check_sorted_set(_First1,_Last1,_First2) \ __glibcxx_check_valid_range(_First1,_Last1); \ _GLIBCXX_DEBUG_VERIFY( \ __gnu_debug::__check_sorted_set(__gnu_debug::__base(_First1), \ __gnu_debug::__base(_Last1), _First2),\ _M_message(__gnu_debug::__msg_unsorted) \ ._M_iterator(_First1, #_First1) \ ._M_iterator(_Last1, #_Last1)) // Likewise with a _Pred. #define __glibcxx_check_sorted_set_pred(_First1,_Last1,_First2,_Pred) \ __glibcxx_check_valid_range(_First1,_Last1); \ _GLIBCXX_DEBUG_VERIFY( \ __gnu_debug::__check_sorted_set(__gnu_debug::__base(_First1), \ __gnu_debug::__base(_Last1), \ _First2, _Pred), \ _M_message(__gnu_debug::__msg_unsorted_pred) \ ._M_iterator(_First1, #_First1) \ ._M_iterator(_Last1, #_Last1) \ ._M_string(#_Pred)) /** Verify that the iterator range [_First, _Last) is partitioned w.r.t. the value _Value. */ #define __glibcxx_check_partitioned_lower(_First,_Last,_Value) \ __glibcxx_check_valid_range(_First,_Last); \ _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_partitioned_lower( \ __gnu_debug::__base(_First), \ __gnu_debug::__base(_Last), _Value), \ _M_message(__gnu_debug::__msg_unpartitioned) \ ._M_iterator(_First, #_First) \ ._M_iterator(_Last, #_Last) \ ._M_string(#_Value)) #define __glibcxx_check_partitioned_upper(_First,_Last,_Value) \ __glibcxx_check_valid_range(_First,_Last); \ _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_partitioned_upper( \ __gnu_debug::__base(_First), \ __gnu_debug::__base(_Last), _Value), \ _M_message(__gnu_debug::__msg_unpartitioned) \ ._M_iterator(_First, #_First) \ ._M_iterator(_Last, #_Last) \ ._M_string(#_Value)) /** Verify that the iterator range [_First, _Last) is partitioned w.r.t. the value _Value and predicate _Pred. */ #define __glibcxx_check_partitioned_lower_pred(_First,_Last,_Value,_Pred) \ __glibcxx_check_valid_range(_First,_Last); \ _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_partitioned_lower( \ __gnu_debug::__base(_First), \ __gnu_debug::__base(_Last), _Value, _Pred), \ _M_message(__gnu_debug::__msg_unpartitioned_pred) \ ._M_iterator(_First, #_First) \ ._M_iterator(_Last, #_Last) \ ._M_string(#_Pred) \ ._M_string(#_Value)) /** Verify that the iterator range [_First, _Last) is partitioned w.r.t. the value _Value and predicate _Pred. */ #define __glibcxx_check_partitioned_upper_pred(_First,_Last,_Value,_Pred) \ __glibcxx_check_valid_range(_First,_Last); \ _GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_partitioned_upper( \ __gnu_debug::__base(_First), \ __gnu_debug::__base(_Last), _Value, _Pred), \ _M_message(__gnu_debug::__msg_unpartitioned_pred) \ ._M_iterator(_First, #_First) \ ._M_iterator(_Last, #_Last) \ ._M_string(#_Pred) \ ._M_string(#_Value)) // Verify that the iterator range [_First, _Last) is a heap #define __glibcxx_check_heap(_First,_Last) \ _GLIBCXX_DEBUG_VERIFY(std::__is_heap(__gnu_debug::__base(_First), \ __gnu_debug::__base(_Last)), \ _M_message(__gnu_debug::__msg_not_heap) \ ._M_iterator(_First, #_First) \ ._M_iterator(_Last, #_Last)) /** Verify that the iterator range [_First, _Last) is a heap w.r.t. the predicate _Pred. */ #define __glibcxx_check_heap_pred(_First,_Last,_Pred) \ _GLIBCXX_DEBUG_VERIFY(std::__is_heap(__gnu_debug::__base(_First), \ __gnu_debug::__base(_Last), \ _Pred), \ _M_message(__gnu_debug::__msg_not_heap_pred) \ ._M_iterator(_First, #_First) \ ._M_iterator(_Last, #_Last) \ ._M_string(#_Pred)) // Verify that the container is not self move assigned #define __glibcxx_check_self_move_assign(_Other) \ _GLIBCXX_DEBUG_VERIFY(this != &_Other, \ _M_message(__gnu_debug::__msg_self_move_assign) \ ._M_sequence(*this, "this")) // Verify that load factor is positive #define __glibcxx_check_max_load_factor(_F) \ _GLIBCXX_DEBUG_VERIFY(_F > 0.0f, \ _M_message(__gnu_debug::__msg_valid_load_factor) \ ._M_sequence(*this, "this")) #define __glibcxx_check_equal_allocs(_This, _Other) \ _GLIBCXX_DEBUG_VERIFY(_This.get_allocator() == _Other.get_allocator(), \ _M_message(__gnu_debug::__msg_equal_allocs) \ ._M_sequence(_This, "this")) #define __glibcxx_check_string(_String) _GLIBCXX_DEBUG_PEDASSERT(_String != 0) #define __glibcxx_check_string_len(_String,_Len) \ _GLIBCXX_DEBUG_PEDASSERT(_String != 0 || _Len == 0) #endif