al_ustr_new - Allegro 5 API

       Create  a new string containing a copy of the C-style string s.  The string must eventually be freed with
       al_ustr_free(3alleg5).

       al_ustr_new - Allegro 5 API

al_ustr_new_from_buffer(3alleg5),              al_ustr_newf(3alleg5),               al_ustr_dup(3alleg5),
       al_ustr_new_from_utf16(3alleg5)

Allegro reference manual                                                                    al_ustr_new(3alleg5)

              #include <allegro5/allegro.h>

              ALLEGRO_USTR *al_ustr_new(const char *s)