+ selftests-harness-remove-use-of-line_max-fix-fix-fix.patch added to mm-hotfixes-unstable branch

+ selftests-harness-remove-use-of-line_max-fix-fix-fix.patch added to mm-hotfixes-unstable branch

[Andrew Morton]

The patch titled
     Subject: selftests: mm: fix undeclared function error
has been added to the -mm mm-hotfixes-unstable branch.  Its filename is
     selftests-harness-remove-use-of-line_max-fix-fix-fix.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-harness-remove-use-of-line_max-fix-fix-fix.patch

This patch will later appear in the mm-hotfixes-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Muhammad Usama Anjum <usama.anjum@collabora.com>
Subject: selftests: mm: fix undeclared function error
Date: Wed, 17 Apr 2024 12:55:30 +0500

Fix the error reported by clang:

In file included from mdwe_test.c:17:
./../kselftest_harness.h:1169:2: error: call to undeclared function
'asprintf'; ISO C99 and later do not support implicit function
declarations [-Wimplicit-function-declaration]
 1169 |         asprintf(&test_name, "%s%s%s.%s", f->name,
      |         ^
1 warning generated.

The gcc reports it as warning:

In file included from mdwe_test.c:17:
../kselftest_harness.h: In function `__run_test':
../kselftest_harness.h:1169:9: warning: implicit declaration of function
`asprintf'; did you mean `vsprintf'? [-Wimplicit-function-declaration]
 1169 |         asprintf(&test_name, "%s%s%s.%s", f->name,
      |         ^~~~~~~~
      |         vsprintf

Fix this by setting _GNU_SOURCE macro needed to get exposure to the
asprintf().

Link: https://lkml.kernel.org/r/20240417075530.3807625-1-usama.anjum@collabora.com
Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Bill Wendling <morbo@google.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Edward Liaw <edliaw@google.com>
Cc: Justin Stitt <justinstitt@google.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: "Mike Rapoport (IBM)" <rppt@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Will Drewry <wad@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 tools/testing/selftests/mm/mdwe_test.c |    1 +
 1 file changed, 1 insertion(+)

--- a/tools/testing/selftests/mm/mdwe_test.c~selftests-harness-remove-use-of-line_max-fix-fix-fix
+++ a/tools/testing/selftests/mm/mdwe_test.c
@@ -7,6 +7,7 @@
 #include <linux/mman.h>
 #include <linux/prctl.h>
 
+#define _GNU_SOURCE
 #include <stdio.h>
 #include <stdlib.h>
 #include <sys/auxv.h>
_

Patches currently in -mm which might be from usama.anjum@collabora.com are

selftests-harness-remove-use-of-line_max-fix-fix-fix.patch
selftests-mm-fix-unused-and-uninitialized-variable-warning.patch
selftests-exec-make-binaries-position-independent.patch