While I'm at it, rearrange the header listings.
+#include <stdatomic.h>
+
atomic_int x;
int var = 0;
atomic_int x;
int var = 0;
+#include <stdatomic.h>
+
#define RW_LOCK_BIAS 0x00100000
#define WRITE_LOCK_CMP RW_LOCK_BIAS
#define RW_LOCK_BIAS 0x00100000
#define WRITE_LOCK_CMP RW_LOCK_BIAS
+#include <stdatomic.h>
+
atomic_int x;
int var = 0;
atomic_int x;
int var = 0;
+#include <stdatomic.h>
+
atomic_int x;
int var = 0;
atomic_int x;
int var = 0;
+#include <stdatomic.h>
+
+#include <stdatomic.h>
+
atomic_int x;
atomic_int y;
atomic_int x;
atomic_int y;