1 files changed, 15 insertions, 0 deletions
diff --git a/tests/languages.exp b/tests/languages.exp
index 2de2500..36d36d7 100644
--- a/tests/languages.exp
+++ b/tests/languages.exp
@@ -97,13 +97,28 @@ hash (register const char *str, register size_t len)
     {
       default:
         hval += asso_values[(unsigned char)str[4]+1];
+#if defined __cplusplus && __cplusplus >= 201703L
+      [[fallthrough]];
+#elif defined __GNUC__ && __GNUC__ >= 7
+      __attribute__ ((__fallthrough__));
+#endif
       /*FALLTHROUGH*/
       case 4:
       case 3:
         hval += asso_values[(unsigned char)str[2]];
+#if defined __cplusplus && __cplusplus >= 201703L
+      [[fallthrough]];
+#elif defined __GNUC__ && __GNUC__ >= 7
+      __attribute__ ((__fallthrough__));
+#endif
       /*FALLTHROUGH*/
       case 2:
         hval += asso_values[(unsigned char)str[1]+9];
+#if defined __cplusplus && __cplusplus >= 201703L
+      [[fallthrough]];
+#elif defined __GNUC__ && __GNUC__ >= 7
+      __attribute__ ((__fallthrough__));
+#endif
       /*FALLTHROUGH*/
       case 1:
         hval += asso_values[(unsigned char)str[0]];