$ cc -Ae -z +Z +w +DD64 -o test2 test2.c
"test2.c", line 15: warning #2223-D: function "__UINT64_C" declared implicitly
      ptrdiff_t slot = ( p >> (BYTE_BITS  + BIT_BITS + ALIGN_BITS));
                               ^

"test2.c", line 15: remark #4242-D: no prototype or definition in scope for
          call to "__UINT64_C"
      ptrdiff_t slot = ( p >> (BYTE_BITS  + BIT_BITS + ALIGN_BITS));
                               ^

"test2.c", line 21: warning #2181-D: argument is incompatible with
          corresponding format string conversion
          p, slot, byte, bit, nop);
          ^

"test2.c", line 21: warning #2181-D: argument is incompatible with
          corresponding format string conversion
          p, slot, byte, bit, nop);
             ^

"test2.c", line 21: warning #2181-D: argument is incompatible with
          corresponding format string conversion
          p, slot, byte, bit, nop);
                   ^

"test2.c", line 21: warning #2181-D: argument is incompatible with
          corresponding format string conversion
          p, slot, byte, bit, nop);
                         ^

"test2.c", line 21: warning #2181-D: argument is incompatible with
          corresponding format string conversion
          p, slot, byte, bit, nop);
                              ^

"test2.c", line 25: warning #2951-D: return type of function "main" must be
          "int"
  void main (int argc, char *argv[])
       ^

"test2.c", line 29: warning #2223-D: function "__UINT64_C" declared implicitly
      for (p = __UINT64_C (123456); p < (__UINT64_C (1) << 34); p += (__UINT64_C (+1) << 29)) {
               ^

"test2.c", line 29: remark #4272-D: conversion from "int" to "uintptr_t" may
          lose sign
      for (p = __UINT64_C (123456); p < (__UINT64_C (1) << 34); p += (__UINT64_C (+1) << 29)) {
             ^

"test2.c", line 29: warning #2063-D: shift count is too large
      for (p = __UINT64_C (123456); p < (__UINT64_C (1) << 34); p += (__UINT64_C (+1) << 29)) {
                                                           ^

"test2.c", line 29: remark #4248-D: comparison of unsigned integer with a
          signed integer
      for (p = __UINT64_C (123456); p < (__UINT64_C (1) << 34); p += (__UINT64_C (+1) << 29)) {
                                      ^

"test2.c", line 15: remark #4298-D: addition result could be truncated before
          cast to bigger sized type
      ptrdiff_t slot = ( p >> (BYTE_BITS  + BIT_BITS + ALIGN_BITS));
                                          ^

"test2.c", line 29: remark #4249-D: value could be truncated before cast to
          bigger sized type
      for (p = __UINT64_C (123456); p < (__UINT64_C (1) << 34); p += (__UINT64_C (+1) << 29)) {
                                                        ^

"test2.c", line 29: remark #4249-D: value could be truncated before cast to
          bigger sized type
      for (p = __UINT64_C (123456); p < (__UINT64_C (1) << 34); p += (__UINT64_C (+1) << 29)) {
                                                                                      ^

ld: Unsatisfied symbol "__UINT64_C" in file test2.o