stdio: Suppress %Z format for clang

clang does not handle %Z on print, and just suppressing
-Wformat-invalid-specifier might trigger another warning for extra
arguments (since %Z is ignored).  So suppress -Wformat-extra-args
as well.

For tst-fphex.c a heavy hammer is used since the printf is more
complex and clang throws a more generic warning.
Reviewed-by: Sam James <sam@gentoo.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/stdio-common/bug1.c b/stdio-common/bug1.c
index 18e7d4c257..f23ee5b6bb 100644
--- a/stdio-common/bug1.c
+++ b/stdio-common/bug1.c
@@ -1,6 +1,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <libc-diag.h>
 
 int
 main (void)
@@ -13,12 +14,22 @@ main (void)
   stream = open_memstream (&bp, &size);
   fprintf (stream, "hello");
   fflush (stream);
+  /* clang do not handle %Z format.  */
+  DIAG_PUSH_NEEDS_COMMENT_CLANG;
+  DIAG_IGNORE_NEEDS_COMMENT_CLANG (13, "-Wformat-invalid-specifier");
+  DIAG_IGNORE_NEEDS_COMMENT_CLANG (13, "-Wformat-extra-args");
   printf ("buf = %s, size = %Zu\n", bp, size);
+  DIAG_POP_NEEDS_COMMENT_CLANG;
   lose |= size != 5;
   lose |= strncmp (bp, "hello", size);
   fprintf (stream, ", world");
   fclose (stream);
+  /* clang do not handle %Z format.  */
+  DIAG_PUSH_NEEDS_COMMENT_CLANG;
+  DIAG_IGNORE_NEEDS_COMMENT_CLANG (13, "-Wformat-invalid-specifier");
+  DIAG_IGNORE_NEEDS_COMMENT_CLANG (13, "-Wformat-extra-args");
   printf ("buf = %s, size = %Zu\n", bp, size);
+  DIAG_POP_NEEDS_COMMENT_CLANG;
   lose |= size != 12;
   lose |= strncmp (bp, "hello, world", 12);