From c7d7c31ced7575de8078a7c1389049dbe02a8f50 Mon Sep 17 00:00:00 2001
From: Bruno Haible <bruno@clisp.org>
Date: Sun, 26 Feb 2023 16:56:19 +0100
Subject: dfa: Avoid warnings with some Apple clang versions.

Reported by Werner Lemberg <wl@gnu.org> in
<https://lists.gnu.org/archive/html/bug-gnulib/2023-02/msg00159.html>.

* lib/dfa.c (FALLTHROUGH): When __apple_build_version__ is defined,
ignore __clang_major__.
---
 lib/dfa.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'lib')

diff --git a/lib/dfa.c b/lib/dfa.c
index 211e1ed18f..994900fea2 100644
--- a/lib/dfa.c
+++ b/lib/dfa.c
@@ -67,7 +67,10 @@ c_isdigit (char c)
 #ifndef FALLTHROUGH
 # if 201710L < __STDC_VERSION__
 #  define FALLTHROUGH [[__fallthrough__]]
-# elif (__GNUC__ >= 7) || (__clang_major__ >= 10)
+# elif ((__GNUC__ >= 7) \
+        || (defined __apple_build_version__ \
+            ? __apple_build_version__ >= 14000000 \
+            : __clang_major__ >= 10))
 #  define FALLTHROUGH __attribute__ ((__fallthrough__))
 # else
 #  define FALLTHROUGH ((void) 0)
-- 
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