[core] __attribute__((fallthrough)) for GCC 7.0

3 years ago · 97d4c11ba6
1 changed files with 7 additions and 0 deletions
--- a/src/first.h
+++ b/src/first.h
@ -111,5 +111,12 @@
 #endif
 #endif

+#if __has_attribute(fallthrough) \
+ || __GNUC_PREREQ(7,0)
+#define __attribute_fallthrough__  __attribute__((__fallthrough__));
+#else
+#define __attribute_fallthrough__
+#endif
+

 #endif