C++: What is std::stacktrace_entry (C++23)?

1#include <stacktrace>
2
3void logError() {
4    auto st = std::stacktrace::current();
5
6    for (const auto& frame : st) {
7        // Description (function name)
8        std::cout << frame.description() << "\n";
9
10        // Source file and line
11        std::cout << "  at " << frame.source_file()
12                  << ":" << frame.source_line() << "\n";
13
14        // Column (if available)
15        if (frame.source_column() > 0) {
16            std::cout << "  col " << frame.source_column() << "\n";
17        }
18    }
19}
20
21// Format individual frame
22std::cout << std::format("{}\n", st[0]);
23
24// Compare frames
25if (st[0] == st[1]) { /* Same frame */ }
26
27// As string
28std::string s = std::to_string(st[0]);