From 9a9c6c2f1af3416060363e3bef1cf7a81aed1dc1 Mon Sep 17 00:00:00 2001
From: Otto Moerbeek <otto@drijf.net>
Date: Wed, 30 Nov 2022 09:34:08 +0100
Subject: Avoid an unused warning

---
 m4/ax_check_sign.m4 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/m4/ax_check_sign.m4 b/m4/ax_check_sign.m4
index acc1262..d01258e 100644
--- a/m4/ax_check_sign.m4
+++ b/m4/ax_check_sign.m4
@@ -43,7 +43,7 @@ AC_DEFUN([AX_CHECK_SIGN], [
  AC_CACHE_CHECK([whether $1 is signed], ax_cv_decl_${typename}_signed, [
    AC_COMPILE_IFELSE(
      [AC_LANG_PROGRAM([[$4]],
-       [[ int foo @<:@ 1 - 2 * !((($1) -1) < 0) @:>@ ]])],
+       [[ int foo @<:@ 1 - 2 * !((($1) -1) < 0) @:>@ ; (void)foo[0] ]])],
      [ eval "ax_cv_decl_${typename}_signed=\"yes\"" ],
      [ eval "ax_cv_decl_${typename}_signed=\"no\"" ])
  ])
-- 
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