/*
* _bt_is_signed_type() willingly generates comparison of unsigned
* expression < 0, which is always false. Silence compiler warnings.
+ * GCC versions lower than 4.6.0 do not accept diagnostic pragma inside
+ * functions.
*/
-#ifdef __GNUC__
+#if defined(__GNUC__) && (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) >= 40600
# define _BT_DIAG_PUSH _Pragma("GCC diagnostic push")
# define _BT_DIAG_POP _Pragma("GCC diagnostic pop")