Be sure to pick up any group error with group_reporting

[fio.git] / os.h

diff --git a/os.h b/os.h
index a2699dd2d0b14e69c5091e412bf20a2dab32045f..da80fbd4f7207e66a0cbb9821bdfabcf389f6ebf 100644 (file)
--- a/os.h
+++ b/os.h
@@ -54,4 +54,10 @@
 #define FIO_HUGE_PAGE                  (4096 * 1024)
 #endif
 
+#if __GNUC__ < 3
+#define __must_check
+#else
+#define __must_check                   __attribute__((warn_unused_result))
+#endif
+
 #endif