from libc.stdint cimport int8_t, int16_t, int32_t, int64_t, intptr_t from libc.stdint cimport uint8_t, uint16_t, uint32_t, uint64_t, uintptr_t cdef extern from *: ctypedef bint bool ctypedef struct va_list cdef extern from *: ctypedef struct A: pass ctypedef struct B: pass ctypedef struct List_A: A *members; uintptr_t count; ctypedef struct List_B: B *members; uintptr_t count; void foo(List_A a); void bar(List_B b);