Convert std :: stringstream to const char ** without memory allocation

From what I understand, it std::stringstream

appears internally not as std::string

, but rather as a collection of instances std::string

. (correct me if i'm wrong).

I have data presented as std::stringstream

and I want to pass it to a C function ( clCreateProgramWithSource

from OpenCL) that expects the data to be an array of character arrays. ( const char**)

.

Is there a way to do this without creating a single line that contains all the content of the line, like this:

std::string tmp1 = my_stringstream.str();
const char* tmp2 = tmp1.c_str();
const char** tmp3 = &tmp2;

      

        
        
        
      

    

EDIT

Follow-up question:

If this is not possible, is there some alternative std::stringstream

inheriting from std::ostream

that allows this access at a low level?