diff --git a/lib/dfa.c b/lib/dfa.c
index a27d096f73..391c2ffbf2 100644
--- a/lib/dfa.c
+++ b/lib/dfa.c
@@ -43,6 +43,11 @@
    MMU will check anyway.  */
 #define assume_nonnull(x) assume ((x) != NULL)
 
+/* Pacify Clang.  */
+#ifdef clang
+ #pragma clang diagnostic ignored "-Wbitwise-instead-of-logical"
+#endif
+
 static bool
 streq (char const *a, char const *b)
 {
@@ -1089,6 +1094,8 @@ parse_bracket_exp (struct dfa *dfa)
               /* Treat [x-y] as a range if x != y.  */
               if (wc != wc2 || wc == WEOF)
                 {
+                  /* Use "&" instead of "&&", as short-circuit evaluation is
+                     not needed and might even slow things down.  */
                   if (dfa->localeinfo.simple
                       || (isasciidigit (c) & isasciidigit (c2)))
                     {