OS: SuSE 9.2 (2.6.8 kernel) on i386
Valgrind output:
==22113== Memcheck, a memory error detector.
==22113== Copyright (C) 2002-2005, and GNU GPL'd, by Julian Seward et al.
==22113== Using LibVEX rev 1575, a library for dynamic binary translation.
==22113== Copyright (C) 2004-2005, and GNU GPL'd, by OpenWorks LLP.
==22113== Using valgrind-3.1.1, a dynamic binary instrumentation framework.
==22113== Copyright (C) 2000-2005, and GNU GPL'd, by Julian Seward et al.
==22113== For more details, rerun with: -v
==22113==
==22113== Syscall param timer_create(evp) points to uninitialised byte(s)
==22113==    at 0x403353E: timer_create (in /lib/tls/librt.so.1)
==22113==    by 0x8048674: main (in /home/vanassb/test/highrestimer/i386-hrtimer)
==22113==  Address 0xBEFFF1DC is on thread 1's stack

Test program:
#include <cassert>
#include <cstring>
#include <time.h>
#include <unistd.h>
#include <signal.h>

#define VERIFY(e) assert(e)

static void TimerHandler(sigval_t)
{
  write(STDOUT_FILENO, "timer\n", 6);
}

int main(int argc, char** argv)
{
  sigevent ev;
  memset(&ev, 0, sizeof(ev));
  ev.sigev_notify = SIGEV_THREAD;
  ev.sigev_notify_function = TimerHandler;
  ev.sigev_notify_attributes = NULL;
  ev.sigev_value.sival_ptr = 0;
  timer_t timer;
  VERIFY(timer_create(CLOCK_REALTIME, &ev, &timer) >= 0);
  itimerspec const timervalue = {
    it_interval: { 1, 0 },
    it_value:    { 0, 500*1000*1000 }
  };
  VERIFY(timer_settime(timer, 0, &timervalue, 0) >= 0);
  sleep(5);
  VERIFY(timer_delete(timer) >= 0);
  return 0;
}

// Local variables:
// compile-command: "ARGS='-Wall -W -Wno-unused-parameter hrtimer.cpp -lrt' &&
g++ -o i386-hrtimer $ARGS && ppc_440-g++ -o ppc-hrtimer $ARGS"
// End: