Add some useful macros.

diff --git a/lib-lib/lib-lib.h b/lib-lib/lib-lib.h
index 04d914c..72ba9aa 100644 (file)
--- a/lib-lib/lib-lib.h
+++ b/lib-lib/lib-lib.h
@@ -100,6 +100,9 @@
 #define MAX(a,b) ((a) < (b) ? (b) : (a))
 #define MIN(a,b) ((a) < (b) ? (a) : (b))
 
+#define __must_check__  __attribute__((warn_unused_result))
+#define IGNORE(expr)  do { if (expr) (void)0; } while (0)
+
 /* }}} */
 
 typedef union __attribute__((transparent_union)) anytype {