Re: [PATCH v2 2/2] tests/qtest: vhost-user-test: Fix [-Werror=format-overflow=] build warning

[Laurent Vivier <laurent@vivier.eu>]

Le 17/10/2022 à 15:20, Bin Meng a écrit :
> From: Bin Meng <bin.meng@windriver.com>
> 
> When tmpfs is NULL, a build warning is seen with GCC 9.3.0.
> It's strange that GCC 11.2.0 on Ubuntu 22.04 does not catch this,
> neither did the QEMU CI.
> 
> While we are here, improve the error message as well.
> 
> Reported-by: Shengjiang Wu <shengjiang.wu@windriver.com>
> Fixes: e6efe236c1d1 ("tests/qtest: vhost-user-test: Avoid using hardcoded /tmp")
> Signed-off-by: Bin Meng <bin.meng@windriver.com>
> Reviewed-by: Markus Armbruster <armbru@redhat.com>
> ---
> 
> Changes in v2:
> - improve the error message
> 
>   tests/qtest/vhost-user-test.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/tests/qtest/vhost-user-test.c b/tests/qtest/vhost-user-test.c
> index e8d2da7228..bf9f7c4248 100644
> --- a/tests/qtest/vhost-user-test.c
> +++ b/tests/qtest/vhost-user-test.c
> @@ -571,8 +571,8 @@ static TestServer *test_server_new(const gchar *name,
>   
>       tmpfs = g_dir_make_tmp("vhost-test-XXXXXX", &err);
>       if (!tmpfs) {
> -        g_test_message("g_dir_make_tmp on path (%s): %s", tmpfs,
> -                       err->message);
> +        g_test_message("Can't create temporary directory in %s: %s",
> +                       g_get_tmp_dir(), err->message);
>           g_error_free(err);
>       }
>       g_assert(tmpfs);

Applied to my trivial-patches branch.

Thanks,
Laurent