The pseudo keyword fallthrough shall be used to make explicit the
fallthrough intention at the end of a case statement (doing this
through comments is deprecated).
Signed-off-by: Federico Serafini <federico.seraf...@bugseng.com>
---
xen/arch/x86/x86_emulate/x86_emulate.h | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/xen/arch/x86/x86_emulate/x86_emulate.h
b/xen/arch/x86/x86_emulate/x86_emulate.h
index d75658eba0..f49b1e0dd8 100644
--- a/xen/arch/x86/x86_emulate/x86_emulate.h
+++ b/xen/arch/x86/x86_emulate/x86_emulate.h
@@ -23,6 +23,16 @@
# error Unknown compilation width
#endif
+/*
+ * Pseudo keyword 'fallthrough' to make explicit the fallthrough intention at
+ * the end of a case statement.
+ */
+#if (!defined(__clang__) && (__GNUC__ >= 7))
+# define fallthrough __attribute__((__fallthrough__))
+#else
+# define fallthrough do {} while (0) /* fallthrough */
+#endif
+
struct x86_emulate_ctxt;
/*
--
2.43.0
