[glibc/azanella/clang] stdio: Fix clang warnings on tests

[Adhemerval Zanella <azanella@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b3816426d9e35c6d15f901657b5beb1fdc3d51fa

commit b3816426d9e35c6d15f901657b5beb1fdc3d51fa
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Thu Jul 27 15:27:08 2023 -0300

    stdio: Fix clang warnings on tests
    
    clang does not support 'I' specifier and handles it as a 'length
    modifier'.

Diff:
---
 stdio-common/tst-scanf-to_inpunct.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/stdio-common/tst-scanf-to_inpunct.c b/stdio-common/tst-scanf-to_inpunct.c
index 6fc038f476..fab1a232b9 100644
--- a/stdio-common/tst-scanf-to_inpunct.c
+++ b/stdio-common/tst-scanf-to_inpunct.c
@@ -18,6 +18,7 @@
    <https://www.gnu.org/licenses/>.  */
 
 #include <array_length.h>
+#include <libc-diag.h>
 #include <stdio.h>
 #include <support/support.h>
 #include <support/check.h>
@@ -68,7 +69,11 @@ do_test (void)
   for (int i = 0; i < array_length (inputs); i++)
     {
       int n;
+      /* clang does not support 'I' specifier.  */
+      DIAG_PUSH_NEEDS_COMMENT_CLANG;
+      DIAG_IGNORE_NEEDS_COMMENT_CLANG (13, "-Wformat");
       sscanf (inputs[i].str, "%Id", &n);
+      DIAG_POP_NEEDS_COMMENT_CLANG;
       TEST_COMPARE (n, inputs[i].n);
     }