[PATCH] bug: shut up format attribute warning for clang as well

[Arnd Bergmann <arnd@kernel.org>]

From: Arnd Bergmann <arnd@arndb.de>

Like gcc, clang-22 now also warns about a function that it
incorrectly identifies as a printf-style format:

lib/bug.c:190:22: error: diagnostic behavior may be improved by adding the 'format(printf, 1, 0)' attribute to the declaration of '__warn_printf' [-Werror,-Wmissing-format-attribute]
  179 | static void __warn_printf(const char *fmt, struct pt_regs *regs)
      | __attribute__((format(printf, 1, 0)))
  180 | {
  181 |         if (!fmt)
  182 |                 return;
  183 |
  184 | #ifdef HAVE_ARCH_BUG_FORMAT_ARGS
  185 |         if (regs) {
  186 |                 struct arch_va_list _args;
  187 |                 va_list *args = __warn_args(&_args, regs);
  188 |
  189 |                 if (args) {
  190 |                         vprintk(fmt, *args);
      |                                           ^

Turn off this warning for all compilers and versions.

Fixes: d36067d6ea00 ("bug: Hush suggest-attribute=format for __warn_printf()")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 lib/bug.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/lib/bug.c b/lib/bug.c
index bbc301097749..374feb144f0b 100644
--- a/lib/bug.c
+++ b/lib/bug.c
@@ -174,8 +174,7 @@ struct bug_entry *find_bug(unsigned long bugaddr)
 }
 
 __diag_push();
-__diag_ignore(GCC, all, "-Wsuggest-attribute=format",
-	      "Not a valid __printf() conversion candidate.");
+__diag_ignore_all("-Wmissing-format-attribute", "Not a valid __printf() conversion candidate.");
 static void __warn_printf(const char *fmt, struct pt_regs *regs)
 {
 	if (!fmt)
-- 
2.39.5