Using the stacktrace library to print the call sequence

In the previous recipe, we saw how to use the C++20 std::source_location to provide information about a source location for logging, testing, and debugging purposes. Another mechanism for debugging is represented by asserts but these are not always enough because we often need to know the sequence of calls that led to a point of execution. This is called the stack trace. The C++23 standard contains a new library with diagnostics utilities. This allows us to print the stack trace. In this recipe, you will learn how to use these diagnostics utilities.

How to do it…

You can use the C++23 stacktrace library to:

• Print the entire content of the stack trace:

  std::cout << std::stacktrace::current() << '\n';
  

• Iterate over each frame in the stack trace and print it:

  for (auto const & frame : std::stacktrace::current())
  {
     std::cout << frame <<...