From 796eba65e7e1cbceac32c28ef83862c19d953cf0 Mon Sep 17 00:00:00 2001
From: Peter Kokot <peterkokot@gmail.com>
Date: Sun, 15 Sep 2024 15:52:37 +0200
Subject: [PATCH] Autotools: Fix CS in undefined sanitizer check (#15892)

To prevent possible unused warnings turning into false errors.
---
 configure.ac | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/configure.ac b/configure.ac
index 198f04afd9e..6b61df11ab4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1526,11 +1526,12 @@ AS_VAR_IF([PHP_UNDEFINED_SANITIZER], [yes],
     AC_CACHE_CHECK([whether to add -fno-sanitize=function],
     [php_cv_ubsan_no_function],
     [AC_RUN_IFELSE([AC_LANG_SOURCE([
-void foo(char *string) {}
-int main(void) {
-  void (*f)(void *) = (void (*)(void *))foo;
-  f("foo");
-}
+      void foo(char *string) { (void)string; }
+      int main(void) {
+        void (*f)(void *) = (void (*)(void *))foo;
+        f("foo");
+        return 0;
+      }
     ])],
     [php_cv_ubsan_no_function=no],
     [php_cv_ubsan_no_function=yes],