[Bug sanitizer/59369] c-c++-common/asan/pr59063-[1,2].c fails on darwin

[howarth at nitro dot med.uc.edu]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59369

--- Comment #1 from Jack Howarth <howarth at nitro dot med.uc.edu> ---
From
http://stackoverflow.com/questions/5167269/clock-gettime-alternative-in-mac-os-x,
the following code would work on darwin, but I'm not sure if the test is still
valid...

/* { dg-do run } */
#ifdef __MACH__
#define CLOCK_MONOTONIC 0
#include <sys/time.h>
static int weak_gettime (int clk_id, struct timespec *tp)
  __attribute__((__weakref__("clock_gettime")));
int clock_gettime(int clk_id, struct timespec* tp) {
    struct timeval now;
    int rv = gettimeofday(&now, NULL);
    if (rv) return rv;
    tp->tv_sec  = now.tv_sec;
    tp->tv_nsec = now.tv_usec * 1000;
    return 0;
}
#else
#include <time.h>
static int weak_gettime (clockid_t clk_id, struct timespec *tp)
  __attribute__((__weakref__("clock_gettime")));
#endif

int main() {
  if (!clock_gettime)
    return 0;
  struct timespec ts;
  return weak_gettime(CLOCK_MONOTONIC, &ts);
}