patch-threadid-older-systems.diff

diff --git Python/thread_pthread.h Python/thread_pthread.h
index e6910b3..ff9bb1f 100644
--- Python/thread_pthread.h
+++ Python/thread_pthread.h
@@ -331,7 +331,17 @@ PyThread_get_thread_native_id(void)
         PyThread_init_thread();
 #ifdef __APPLE__
     uint64_t native_id;
+#if MAC_OS_X_VERSION_MAX_ALLOWED < 1060
+    native_id = pthread_mach_thread_np(pthread_self());
+#elif MAC_OS_X_VERSION_MIN_REQUIRED < 1060
+    if (&pthread_threadid_np != NULL) {
+        (void) pthread_threadid_np(NULL, &native_id);
+    } else {
+        native_id = pthread_mach_thread_np(pthread_self());
+    }
+#else
     (void) pthread_threadid_np(NULL, &native_id);
+#endif
 #elif defined(__linux__)
     pid_t native_id;
     native_id = syscall(SYS_gettid);