Why does start_routine for pthread_create return void* and take void*

Question

The function header for pthread_create looks like this:

int pthread_create(pthread_t * thread, 
                   const pthread_attr_t * attr,
          


        

Answer 1

From the spec:

If the start_routine returns, the effect is as if there was an implicit call to pthread_exit() using the return value of start_routine as the exit status.