std::basic_stacktrace<Allocator>::rbegin, std::basic_stacktrace<Allocator>::crbegin

 

C++

Compiler support

Freestanding and hosted

Language

Standard library

Standard library headers

Named requirements

Feature test macros (C++20)

Language support library

Concepts library (C++20)

Metaprogramming library (C++11)

Diagnostics library

General utilities library

Strings library

Containers library

Iterators library

Ranges library (C++20)

Algorithms library

Numerics library

Localizations library

Input/output library

Filesystem library (C++17)

Regular expressions library (C++11)

Concurrency support library (C++11)

Technical specifications

Symbols index

External libraries

 

Diagnostics library

Exception handling exception uncaught_exceptionuncaught_exceptions (until C++20*)(C++17) exception_ptr (C++11) make_exception_ptr (C++11) current_exception (C++11) rethrow_exception (C++11) nested_exception (C++11) throw_with_nested (C++11) rethrow_if_nested (C++11) Exception handling failures terminate terminate_handler get_terminate (C++11) set_terminate bad_exception unexpected (until C++17*) unexpected_handler (until C++17*) get_unexpected (C++11)(until C++17*)     set_unexpected (until C++17*) Error codes Error codes errno

Exception categories logic_error invalid_argument domain_error length_error out_of_range runtime_error range_error overflow_error underflow_error tx_exception (TM TS) System error support error_category (C++11) generic_category (C++11) system_category (C++11) error_condition (C++11) errc (C++11) error_code (C++11) system_error (C++11) Assertions assert Stacktrace stacktrace_entry (C++23) basic_stacktrace (C++23)

 

std::basic_stacktrace

Member functions

basic_stacktrace::basic_stacktrace (C++23)

basic_stacktrace::~basic_stacktrace (C++23)

basic_stacktrace::operator= (C++23)

basic_stacktrace::current (C++23)

basic_stacktrace::get_allocator (C++23)

Iterators

basic_stacktrace::beginbasic_stacktrace::cbegin (C++23)(C++23)

basic_stacktrace::endbasic_stacktrace::cend (C++23)(C++23)

basic_stacktrace::rbeginbasic_stacktrace::crbegin (C++23)(C++23)

basic_stacktrace::rendbasic_stacktrace::crend (C++23)(C++23)

Capacity

basic_stacktrace::empty (C++23)

basic_stacktrace::size (C++23)

basic_stacktrace::max_size (C++23)

Element access

basic_stacktrace::operator[] (C++23)

basic_stacktrace::at (C++23)

Modifiers

basic_stacktrace::swap (C++23)

Non-member functions

operator== operator<=> (C++23)(C++23)

std::swap (C++23)

std::to_string (C++23)

operator<< (C++23)

Helper classes

std::hash<std::basic_stacktrace> (C++23)

std::formatter<std::basic_stacktrace> (C++23)

 

const_reverse_iterator rbegin()  const noexcept;	(1)	(since C++23)
const_reverse_iterator crbegin() const noexcept;	(2)	(since C++23)

Returns a reverse iterator to the first entry of the reversed basic_stacktrace. It corresponds to the last entry of the original basic_stacktrace. If the basic_stacktrace is empty, the returned iterator is equal to rend().

Parameters

(none)

Return value

Reverse iterator to the first entry.

Complexity

Constant.

Example

Run this code

#include <algorithm>
#include <iostream>
#include <stacktrace>
 
int main()
{
    auto trace       = std::stacktrace::current();
    auto empty_trace = std::stacktrace{};
 
    // Print stacktrace.
    std::for_each(trace.rbegin(), trace.rend(),
                  [](const auto& f) { std::cout << f << '\n'; });
 
    if (empty_trace.rbegin() == empty_trace.rend())
        std::cout << "stacktrace 'empty_trace' is indeed empty.\n";
}

Possible output:

0x0000000000402A29 in ./prog.exe
__libc_start_main in /lib/x86_64-linux-gnu/libc.so.6
0x0000000000402BA5 in ./prog.exe
stacktrace 'empty_trace' is indeed empty.

See also

rendcrend (C++23)

returns a reverse iterator to the end (public member function)