# std::to_string

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< cpp‎ | utility‎ | basic stacktrace

Defined in header `<stacktrace>` |  |
template< class Allocator > std::string to_string( const std::basic_stacktrace<Allocator>& st ); |  | (since C++23)

Returns a string with a description of `st`.

The description of a `basic_stacktrace` typically contains description of its entries, although the number of lines is not required to be equal to `size()`.

### Parameters

st | - | a `basic_stacktrace` whose description is to be returned

### Return value

A string with a description of `st`.

### Exceptions

May throw implementation-defined exceptions.

### 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.

### Example

Run this code

    #include <stacktrace>
    #include <string>
    #include <iostream>

    int main()
    {
        auto trace = std::stacktrace::current();
        std::cout << std::to_string(trace) << '\n';
    }

Possible output:

     0# 0x0000000000402D97 in ./prog.exe
     1# __libc_start_main in /lib/x86_64-linux-gnu/libc.so.6
     2# 0x0000000000402CA9 in ./prog.exe

### See also

to_string (C++23) | returns a string with a description of the `stacktrace_entry` (function)

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