X-Git-Url: https://git.distorted.org.uk/~mdw/mLib/blobdiff_plain/2f2cb6647cc52037b361d54e46c7c75ebef1c125..8c470f2a28273197fbf0939a7bceb3d0d0a6df7d:/utils/macros.h

diff --git a/utils/macros.h b/utils/macros.h
index 45420e2..70f535f 100644
--- a/utils/macros.h
+++ b/utils/macros.h
@@ -94,6 +94,10 @@
 #  define IGNORABLE __attribute__((__unused__))
 #endif
 
+#if GCC_VERSION_P(3, 4) || CLANG_VERSION_P(3, 3)
+#  define MUST_CHECK __attribute__((__warn_unused_result__))
+#endif
+
 #if GCC_VERSION_P(4, 5) || CLANG_VERSION_P(3, 3)
 #  define DEPRECATED(msg) __attribute__((__deprecated__(msg)))
 #elif GCC_VERSION_P(3, 1)
@@ -223,6 +227,10 @@
 #  define IGNORABLE
 #endif
 
+#ifndef MUST_CHECK
+#  define MUST_CHECK
+#endif
+
 #ifndef GCC_WARNING
 #  define GCC_WARNING(warn)
 #endif