macros.h
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// Debugging support implementation -*- C++ -*-
// Copyright (C) 2003-2024 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.
*
*/
#define _GLIBCXX_DEBUG_VERIFY_AT_F(_Cond,_ErrMsg,_File,_Line,_Func) \
do { \
if (__builtin_expect(!bool(_Cond), false)) \
__gnu_debug::_Error_formatter::_S_at(_File, _Line, _Func) \
._ErrMsg._M_error(); \
} 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_dist(_First,_Dist,_Way) \
_GLIBCXX_DEBUG_VERIFY(__gnu_debug::__can_advance(_First, _Dist, _Way), \
_M_message(__gnu_debug::__msg_iter_subscript_oob) \
._M_iterator(_First, #_First) \
._M_integer(_Way * _Dist.first, #_Dist))
#define __glibcxx_check_can_increment_range(_First1,_Last1,_First2) \
do \
{ \
typename __gnu_debug::_Distance_traits<__decltype(_First1)>::__type __dist;\
_GLIBCXX_DEBUG_VERIFY_AT_F( \
__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_AT_F( \
__gnu_debug::__can_advance(_First2, __dist, 1), \
_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_AT_F( \
__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_AT_F( \
__gnu_debug::__can_advance(_First2, __dist, -1), \
_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))
#if __cplusplus >= 201103L
# define __glibcxx_check_erase2(_CPosition) \
_GLIBCXX_DEBUG_VERIFY(_CPosition != _M_base().cend(), \
_M_message(__gnu_debug::__msg_erase_bad) \
._M_sequence(*this, "this") \
._M_iterator(_CPosition, #_CPosition));
#endif
/** 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_singular() && !_Last._M_singular(), \
_M_message(__gnu_debug::__msg_erase_different) \
._M_sequence(*this, "this") \
._M_iterator(_First, #_First) \
._M_iterator(_Last, #_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 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"))
#endif