[glibc] Fix stringop-overflow warning in tst-strlcat2.

[glibc] Fix stringop-overflow warning in tst-strlcat2.

[Stefan Liebler]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ab0db3b8849a3d4e56e30d50bc019666532b1299

commit ab0db3b8849a3d4e56e30d50bc019666532b1299
Author: Stefan Liebler <stli@linux.ibm.com>
Date:   Tue Jan 16 09:44:30 2024 +0100

    Fix stringop-overflow warning in tst-strlcat2.
    
    On s390x, I get warnings like this when do_one_test is inlined with SIZE_MAX:
    In function ‘do_one_test’,
        inlined from ‘do_overflow_tests’ at tst-strlcat2.c:184:2:
    tst-strlcat2.c:49:18: error: ‘strnlen’ specified bound [18446744073709550866, 18446744073709551615] exceeds maximum object size 9223372036854775807 [-Werror=stringop-overflow=]
       49 | # define STRNLEN strnlen
          |                  ^
    tst-strlcat2.c:89:23: note: in expansion of macro ‘STRNLEN’
       89 |   size_t dst_length = STRNLEN (dst, n);
          |                       ^~~~~~~
    
    This patch just marks the do_one_test function as noinline as also done in test-strncat.c:
    Fix stringop-overflow warning in test-strncat.
    https://sourceware.org/git/?p=glibc.git;a=commit;h=51aeab9a363a0d000d0912aa3d6490463a26fba2

Diff:
---
 string/tst-strlcat2.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/string/tst-strlcat2.c b/string/tst-strlcat2.c
index 225520a46b..1ec26a2432 100644
--- a/string/tst-strlcat2.c
+++ b/string/tst-strlcat2.c
@@ -81,6 +81,7 @@ IMPL (STRLCAT, 1)
 typedef size_t (*proto_t) (CHAR *, const CHAR *, size_t);
 
 static void
+__attribute__((noinline))
 do_one_test (impl_t *impl, CHAR *dst, const CHAR *src,
 	     size_t n)
 {