Merge branch 'master' into v2.1

src/lj_carith.c

@@ -274,6 +274,15 @@ int lj_carith_op(lua_State *L, MMS mm)
   return lj_carith_meta(L, cts, &ca, mm);
 }
 
+/* No built-in functionality for length of cdata. */
+int lj_carith_len(lua_State *L)
+{
+  CTState *cts = ctype_cts(L);
+  CDArith ca;
+  carith_checkarg(L, cts, &ca);
+  return lj_carith_meta(L, cts, &ca, MM_len);
+}
+
 /* -- 64 bit bit operations helpers --------------------------------------- */
 
 #if LJ_64
@@ -347,7 +356,6 @@ uint64_t lj_carith_check64(lua_State *L, int narg, CTypeID *id)
   }
 }
 
-
 /* -- 64 bit integer arithmetic helpers ----------------------------------- */
 
 #if LJ_32 && LJ_HASJIT