Question

I have to call backtrace_symbols_fd() function, but the third argument of this function is file descriptor.
so can i pass that third argument as ofstream object ?

I’m tyring following code:

 ofstream myfile;
 myfile.open ("example.txt");
 size_t size = backtrace(aray, 5000);
 backtrace_symbols_fd(aray, 5000, myfile);

But with above function call im getting following error:

cannot convert 'std::ofstream' to 'int' for argument '3' to 
'void backtrace_symbols_fd(void* const*, int, int)'

Answer 1

As you have discovered, no it is not possible to pass an ofstream.
Just use the open(2) function to get a file descriptor.