std::basic_stacktrace<Allocator>::rend, std::basic_stacktrace<Allocator>::crend

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.

# Declarations

const_reverse_iterator rend() const noexcept;

(since C++23)

const_reverse_iterator crend() const noexcept;

(since C++23)

# Return value

The end iterator of the reversed basic_stacktrace.

# Example

#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";
}

# See also

rbegincrbegin