--- perl-5.18.0/hv_func.h~	2013-05-08 15:58:40.000000000 +0200
+++ perl-5.18.0/hv_func.h	2013-06-09 20:29:24.940447822 +0200
@@ -425,6 +425,9 @@
             k1 |= carry<<24;
             MURMUR_DOBLOCK(h1, k1);
         }
+        default:
+        /* make gcc quiet */
+        break;
     }
 #endif
     /* Advance over whole 32-bit chunks, possibly leaving 1..3 bytes */