$ cat test2.c #### #include #define __STDC_LIMIT_MACROS #include #include #define ALIGN_BITS (sizeof (void *) >> __UINT64_C (1)) #define BIT_BITS __UINT64_C (3) #define BYTE_BITS __UINT64_C (14) #define SLOT_BITS (sizeof (void *) * 8) - (ALIGN_BITS + BIT_BITS + BYTE_BITS) #define BYTES_PER_SLOT __UINT64_C (1) << BYTE_BITS #define TRACKING_SLOTS 8192 int check_new (uintptr_t p) { ptrdiff_t slot = ( p >> (BYTE_BITS + BIT_BITS + ALIGN_BITS)); ptrdiff_t byte = ( p >> (ALIGN_BITS + BIT_BITS)) & __UINT64_C (0x00003fff); ptrdiff_t bit = ( p >> ALIGN_BITS) & __UINT64_C (0x00000007); ptrdiff_t nop = p & __UINT64_C (0x3 ); printf ("address: %p slot: %p byte: %4x bit: %4x nop:%x\n", p, slot, byte, bit, nop); return 1; } /* check_new */ int main (int argc, char *argv[]) { uintptr_t p; for (p = __UINT64_C (123456); p < (__UINT64_C (1) << 34); p += (__UINT64_C (+1) << 29)) check_new (p); return (1); } /* main */ #### $ gcc -dumpversion 4.2.4 $ gcc -o test2 test2.c test2.c: In function 'main': test2.c:29: warning: left shift count >= width of type ld: Unsatisfied symbol "__UINT64_C" in file /tmp/ccAAXIbg.o 1 errors. $ gcc -mlp64 -fno-strict-aliasing -pipe -fPIC -o test2 test2.c test2.c: In function 'main': test2.c:29: warning: left shift count >= width of type ld: Unsatisfied symbol "__UINT64_C" in file /tmp/ccvHbmFn.o 1 errors. #### $ gcc -dumpversion 3.4.6 $ gcc -fno-strict-aliasing -pipe -fPIC -o test2 test2.c test2.c:3:20: stdint.h: No such file or directory test2.c: In function `main': test2.c:29: warning: left shift count >= width of type $ #### $ 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