[glibc/azanella/clang] debug: Avoid clang optimize away required function on tst-ssp1.c

[Adhemerval Zanella]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=a29972e91b4ec18300af6db982308dcb11021128

commit a29972e91b4ec18300af6db982308dcb11021128
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Wed Jan 17 15:50:04 2024 -0300

    debug: Avoid clang optimize away required function on tst-ssp1.c

Diff:
---
 debug/tst-ssp-1.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/debug/tst-ssp-1.c b/debug/tst-ssp-1.c
index 27f10edc56..671e9a5007 100644
--- a/debug/tst-ssp-1.c
+++ b/debug/tst-ssp-1.c
@@ -22,6 +22,10 @@
 
 static void
 __attribute__ ((noinline)) __attribute_noclone__
+#ifdef __clang__
+/* Avoid clang optimize it away.  */
+__attribute__ ((optnone))
+#endif
 test (char *foo)
 {
   int i;