#define mmap(addr, length, prot, flags, fd, offset) \
failtest_mmap((addr), (length), (prot), (flags), (fd), (offset), NULL, 0)
#define mmap(addr, length, prot, flags, fd, offset) \
failtest_mmap((addr), (length), (prot), (flags), (fd), (offset), NULL, 0)