std::operator<<(std::basic_stacktrace)

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C++
 
Diagnostics library
 
std::basic_stacktrace
 
Defined in header <stacktrace>
template< class Allocator >
std::ostream& operator<<( std::ostream& os, const std::basic_stacktrace<Allocator>& st );
 (since C++23)

Inserts the description of st into the output stream os. Equivalent to return os << std::to_string(st);.

Parameters

os - an output stream
st - a basic_stacktrace whose description is to be inserted

Return value

os.

Exceptions

May throw implementation-defined exceptions.

Example

Run this code
#include <stacktrace>
#include <iostream>
 
int main()
{
    std::cout << "The stacktrace obtained in the main function:\n";
    std::cout << std::stacktrace::current() << '\n';
    []{
        std::cout << "The stacktrace obtained in a nested lambda:\n";
        std::cout << std::stacktrace::current() << '\n';
    }();
}

Possible output: 

The stacktrace obtained in the main function:
 0# 0x0000000000402E7B in ./prog.exe
 1# __libc_start_main in /lib/x86_64-linux-gnu/libc.so.6
 2# 0x0000000000402CD9 in ./prog.exe
 
The stacktrace obtained in a nested lambda:
 0# 0x0000000000402DDA in ./prog.exe
 1# 0x0000000000402EB2 in ./prog.exe
 2# __libc_start_main in /lib/x86_64-linux-gnu/libc.so.6
 3# 0x0000000000402CD9 in ./prog.exe

See also

(C++23)
 performs stream output of stacktrace_entry
(function template)
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