Changeset 69010 in vbox

Timestamp:

Oct 9, 2017 10:11:03 AM (8 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

118279

Message:

iprt/cdefs.h: Introduced RT_FALL_THROUGH() and the alias RT_FALL_THRU() for telling the compiler that we intended to fall thru to the next case in a switch. It's unfortunately necessary because the GCC preprocessor doesn't pass the information along.

File:

• trunk/include/iprt/cdefs.h (modified) (1 diff)

trunk/include/iprt/cdefs.h

@@ -1108 +1108 @@
 # define RT_THROW(type)
 #endif
+
+
+/** @def RT_FALL_THROUGH
+ * Tell the compiler that we're falling through to the next case in a switch.
+ * @sa RT_FALL_THRU  */
+#if RT_GNUC_PREREQ(7, 0)
+# define RT_FALL_THROUGH()      __attribute__((fallthrough))
+#else
+# define RT_FALL_THROUGH()      (void)0
+#endif
+/** @def RT_FALL_THRU
+ * Tell the compiler that we're falling thru to the next case in a switch.
+ * @sa RT_FALL_THROUGH */
+#define RT_FALL_THRU()          RT_FALL_THROUGH()
+
 
 /** @def RT_IPRT_FORMAT_ATTR