Allegro 5 api
#include <allegro5/allegro.h> ALLEGRO_USTR *al_ustr_dup(const ALLEGRO_USTR *us)
Return a duplicate copy of a string. The new string will need to be freed with al_ustr_free(3alleg5).
al_ustr_dup_substr(3alleg5), al_ustr_free(3alleg5)