NAME

std::basic_stacktrace::rend,std::basic_stacktrace::crend - std::basic_stacktrace::rend,std::basic_stacktrace::crend

Synopsis

const_reverse_iterator rend() const noexcept; (1) (since C++23)
const_reverse_iterator crend() const noexcept; (2) (since C++23)

Returns a reverse iterator pointing past the last entry of the reversed
basic_stacktrace. It corresponds to the iterator preceding the first entry of the
original basic_stacktrace. This iterator acts as a placeholder, attempting to
dereference it results in undefined behavior.

range-rbegin-rend.svg

Parameters

(none)

Return value

The end iterator of the reversed basic_stacktrace.

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.