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

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

#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";
}

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