rsync crashing under centos 4

[Joe Pruett]

i should have run my test first.  this code segfaults:

#include <sys/types.h>
#include <pwd.h>

main()
{
        struct passwd *p;

        chroot("/tmp");
        chdir("/");
        p = getpwuid(666);
        if (p) {
                printf("%s\n", p->pw_name);
        }
        exit(0);
}

so i guess that rsync can't help in any way.  time to start looking at 
libc...