--- /dev/null
+#include <inttypes.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static void *thread_main(void *arg)
+{
+ uintptr_t address = (uintptr_t)&arg;
+
+ printf("alignment = %" PRIuPTR "\n", address & 3U);
+
+ return NULL;
+}
+
+int main(int argc, char **argv)
+{
+ pthread_t t;
+ int e;
+
+ if ((e = pthread_create(&t, NULL, thread_main, NULL)) != 0)
+ {
+ fprintf(stderr, "pthread_create: %s\n", strerror(e));
+ exit(1);
+ }
+
+ if ((e = pthread_join(t, NULL)) != 0)
+ {
+ fprintf(stderr, "pthread_join: %s\n", strerror(e));
+ exit(1);
+ }
+
+ exit(0);
+}