From b5a434f7f0ee4d64857f8592eced5b9007d83620 Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Mon, 28 Jun 2021 17:01:29 +0200
Subject: configure: inhibit the implicit-fallthrough warning on gcc-12

... since it no longer acknowledges the comment markup we use for that
purpose.

Reported-by: Younes El-karama
Fixes #7295
Closes #7307
---
 m4/curl-compilers.m4 | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'm4')

diff --git a/m4/curl-compilers.m4 b/m4/curl-compilers.m4
index 485e6017e..6d17a9fbd 100644
--- a/m4/curl-compilers.m4
+++ b/m4/curl-compilers.m4
@@ -1033,7 +1033,10 @@ AC_DEFUN([CURL_SET_COMPILER_WARNING_OPTS], [
             CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [alloc-zero])
             tmp_CFLAGS="$tmp_CFLAGS -Wformat-overflow=2"
             tmp_CFLAGS="$tmp_CFLAGS -Wformat-truncation=2"
-            tmp_CFLAGS="$tmp_CFLAGS -Wimplicit-fallthrough=4"
+            if test "$compiler_num" -lt "1200"; then
+              dnl gcc 12 doesn't acknowledge our comment markups
+              tmp_CFLAGS="$tmp_CFLAGS -Wimplicit-fallthrough=4"
+            fi
           fi
           #
         fi
-- 
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