std::basic_stacktrace<Allocator>::size
Min standard notice:
Returns the number of entries in the stacktrace.
# Declarations
size_type size() const noexcept;
(since C++23)
# Return value
The number of entries in the stacktrace.
# Example
#include <stacktrace>
#include <iostream>
int main()
{
auto trace = std::stacktrace::current();
std::cout << "trace contains " << trace.size() << " entries.\n";
}