linux-kernel - Re: [PATCH] selftests/core: fix conflicting types compile error for close

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Date:   Mon, 1 Nov 2021 10:32:18 +0100
From:   Christian Brauner <christian.brauner@...ntu.com>
To:     Shuah Khan <skhan@...uxfoundation.org>
Cc:     shuah@...nel.org, linux-kselftest@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] selftests/core: fix conflicting types compile error for
 close_range()

On Wed, Oct 27, 2021 at 01:26:19PM -0600, Shuah Khan wrote:
> close_range() test type conflicts with close_range() library call in
> x86_64-linux-gnu/bits/unistd_ext.h. Fix it by changing the name to
> core_close_range().
> 
> gcc -g -I../../../../usr/include/    close_range_test.c  -o ../tools/testing/selftests/core/close_range_test
> In file included from close_range_test.c:16:
> close_range_test.c:57:6: error: conflicting types for ‘close_range’; have ‘void(struct __test_metadata *)’
>    57 | TEST(close_range)
>       |      ^~~~~~~~~~~
> ../kselftest_harness.h:181:21: note: in definition of macro ‘__TEST_IMPL’
>   181 |         static void test_name(struct __test_metadata *_metadata); \
>       |                     ^~~~~~~~~
> close_range_test.c:57:1: note: in expansion of macro ‘TEST’
>    57 | TEST(close_range)
>       | ^~~~
> In file included from /usr/include/unistd.h:1204,
>                  from close_range_test.c:13:
> /usr/include/x86_64-linux-gnu/bits/unistd_ext.h:56:12: note: previous declaration of ‘close_range’ with type ‘int(unsigned int,  unsigned int,  int)’
>    56 | extern int close_range (unsigned int __fd, unsigned int __max_fd,
>       |            ^~~~~~~~~~~
> 
> Signed-off-by: Shuah Khan <skhan@...uxfoundation.org>
> ---

Looks good. thank you!
Acked-by: Christian Brauner <christian.brauner@...ntu.com>