_ustrdup - Duplicates a string with a custom memory allocator. Allegro
game programming library.
#include <allegro.h>
char *_ustrdup(const char *src, void* (*malloc_func)(size_t))
Does the same as ustrdup(), but allows the user to specify a custom
memory allocator function.
ustrdup(3alleg), uconvert(3alleg), ustrsize(3alleg), ustrsizez(3alleg)