master 2ceb09315c: Update from Gnulib by running admin/merge-gnulib

[Paul Eggert]

branch: master
commit 2ceb09315c0d590d6f50ff8649066f260e35e7fb
Author: Paul Eggert <eggert@cs.ucla.edu>
Commit: Paul Eggert <eggert@cs.ucla.edu>

    Update from Gnulib by running admin/merge-gnulib
---
 m4/assert_h.m4 | 1 +
 1 file changed, 1 insertion(+)

diff --git a/m4/assert_h.m4 b/m4/assert_h.m4
index c411a34aa7..c1306daef4 100644
--- a/m4/assert_h.m4
+++ b/m4/assert_h.m4
@@ -18,6 +18,7 @@ AC_DEFUN([gl_ASSERT_H],
        [AC_LANG_PROGRAM(
           [[#if defined __clang__ && __STDC_VERSION__ < 202311
              #pragma clang diagnostic error "-Wc2x-extensions"
+             #pragma clang diagnostic error "-Wc++17-extensions"
             #endif
             #ifdef INCLUDE_ASSERT_H
              #include <assert.h>