llvm/polly/lib/External/isl/isl_list_templ.h

#define xFN(TYPE,NAME)
#define FN(TYPE,NAME)
#define xLIST(EL)
#define LIST(EL)

struct LIST(EL) {};

__isl_give LIST(EL) *FN(LIST(EL),dup)(__isl_keep LIST(EL) *list);