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SubjectRe: [PATCH v2] selftests: pidfd: Fix compling warnings
From
ping

On 01/09/2022 11:17, Li Zhijian wrote:
> Fix warnings and enable Wall.
>
> pidfd_wait.c: In function ‘wait_nonblock’:
> pidfd_wait.c:150:13: warning: unused variable ‘status’ [-Wunused-variable]
> 150 | int pidfd, status = 0;
> | ^~~~~~
> ...
> pidfd_test.c: In function ‘child_poll_exec_test’:
> pidfd_test.c:438:1: warning: no return statement in function returning non-void [-Wreturn-type]
> 438 | }
> | ^
>
> Signed-off-by: Li Zhijian <lizhijian@fujitsu.com>
> v2: fix mistake assignment to pidfd
> ---
> tools/testing/selftests/pidfd/Makefile | 2 +-
> tools/testing/selftests/pidfd/pidfd_test.c | 2 ++
> tools/testing/selftests/pidfd/pidfd_wait.c | 2 +-
> 3 files changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/tools/testing/selftests/pidfd/Makefile b/tools/testing/selftests/pidfd/Makefile
> index f4a2f28f926b..778b6cdc8aed 100644
> --- a/tools/testing/selftests/pidfd/Makefile
> +++ b/tools/testing/selftests/pidfd/Makefile
> @@ -1,5 +1,5 @@
> # SPDX-License-Identifier: GPL-2.0-only
> -CFLAGS += -g -I../../../../usr/include/ -pthread
> +CFLAGS += -g -I../../../../usr/include/ -pthread -Wall
>
> TEST_GEN_PROGS := pidfd_test pidfd_fdinfo_test pidfd_open_test \
> pidfd_poll_test pidfd_wait pidfd_getfd_test pidfd_setns_test
> diff --git a/tools/testing/selftests/pidfd/pidfd_test.c b/tools/testing/selftests/pidfd/pidfd_test.c
> index 9a2d64901d59..d36654265b7a 100644
> --- a/tools/testing/selftests/pidfd/pidfd_test.c
> +++ b/tools/testing/selftests/pidfd/pidfd_test.c
> @@ -435,6 +435,8 @@ static int child_poll_exec_test(void *args)
> */
> while (1)
> sleep(1);
> +
> + return 0;
> }
>
> static void test_pidfd_poll_exec(int use_waitpid)
> diff --git a/tools/testing/selftests/pidfd/pidfd_wait.c b/tools/testing/selftests/pidfd/pidfd_wait.c
> index c3e2a3041f55..0dcb8365ddc3 100644
> --- a/tools/testing/selftests/pidfd/pidfd_wait.c
> +++ b/tools/testing/selftests/pidfd/pidfd_wait.c
> @@ -148,7 +148,7 @@ static int sys_waitid(int which, pid_t pid, siginfo_t *info, int options,
>
> TEST(wait_nonblock)
> {
> - int pidfd, status = 0;
> + int pidfd;
> unsigned int flags = 0;
> pid_t parent_tid = -1;
> struct clone_args args = {

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