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$ cat test2.c

#include <stdio.h>
#define __STDC_LIMIT_MACROS
...
        check_new (p);
    return (1);
    } /* main */

$ gcc -dumpversion
4.2.4
...
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
...
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 im
+plicitly
...
                                                                      
+                ^

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