none/tests/pth_stackalign.c

   1 #include <inttypes.h>
   2 #include <pthread.h>
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5 #include <string.h>
   6
   7 static void *thread_main(void *arg)
   8 {
   9   uintptr_t address = (uintptr_t)&arg;
  10
  11   printf("alignment = %" PRIuPTR "\n", address & 3U);
  12
  13   return NULL;
  14 }
  15
  16 int main(int argc, char **argv)
  17 {
  18   pthread_t t;
  19   int e;
  20
  21   if ((e = pthread_create(&t, NULL, thread_main, NULL)) != 0)
  22     {
  23       fprintf(stderr, "pthread_create: %s\n", strerror(e));
  24       exit(1);
  25     }
  26
  27   if ((e = pthread_join(t, NULL)) != 0)
  28     {
  29       fprintf(stderr, "pthread_join: %s\n", strerror(e));
  30       exit(1);
  31     }
  32
  33   exit(0);
  34 }