Utilities library
General utilities
Relational operators (deprecated in C++20)
Integer comparison functions
Swap and type operations

Common vocabulary types

Elementary string conversions

Defined in header <stacktrace>
std::string to_string( const std::stacktrace_entry& f );
(since C++23)

Returns a string with a description of f.

The standard recommends that the description should provide information about the contained evaluation, including information from f.source_file() and f.source_line().


[edit] Parameters

f - a stacktrace_entry whose description is to be returned

[edit] Return value

A string with a description of f.

[edit] Exceptions

May throw implementation-defined exceptions.

[edit] Notes

Custom allocators support for this function is not provided, because the implementations usually require platform specific allocations, system calls and a lot of CPU intensive work, while a custom allocator does not provide benefits for this function as the platform specific operations take an order of magnitude more time than the allocation.

[edit] Example

#include <stacktrace>
#include <string>
#include <iostream>
int main()
    auto st = std::stacktrace::current();
    std::cout <<
        "Description of an empty stacktrace entry:\n" +
        std::to_string(std::stacktrace_entry{}) << '\n';
    if (st.size() > 0) {
        std::cout <<
            "Description of a non-empty stacktrace entry:\n" +
            std::to_string(st[0]) << '\n';

Possible output:

Description of an empty stacktrace entry:
Description of a non-empty stacktrace entry:
0x0000000000402DE9 in ./prog.exe

[edit] See also

returns a string with a description of the basic_stacktrace
(function template) [edit]