| Message ID | 20240603124220.33778-1-amer.shanawany@gmail.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | selftests: proc: remove unreached code and fix build warning | expand |
On Mon, Jun 03, 2024 at 02:42:20PM +0200, Amer Al Shanawany wrote: > fix the following warning: > proc-empty-vm.c:385:17: warning: ignoring return value of ‘write’ > --- a/tools/testing/selftests/proc/proc-empty-vm.c > +++ b/tools/testing/selftests/proc/proc-empty-vm.c > @@ -381,9 +381,6 @@ static int test_proc_pid_statm(pid_t pid) > - if (0) { > - write(1, buf, rv); > - } no thanks
On Mon, 3 Jun 2024 17:24:47 +0300 Alexey Dobriyan <adobriyan@gmail.com> wrote: > On Mon, Jun 03, 2024 at 02:42:20PM +0200, Amer Al Shanawany wrote: > > fix the following warning: > > proc-empty-vm.c:385:17: warning: ignoring return value of ‘write’ > > > --- a/tools/testing/selftests/proc/proc-empty-vm.c > > +++ b/tools/testing/selftests/proc/proc-empty-vm.c > > @@ -381,9 +381,6 @@ static int test_proc_pid_statm(pid_t pid) > > > - if (0) { > > - write(1, buf, rv); > > - } > > no thanks Why not? Why does that code exist anyway? It at least needs a comment.
On Tue, Jun 04, 2024 at 08:25:31PM -0700, Andrew Morton wrote: > On Mon, 3 Jun 2024 17:24:47 +0300 Alexey Dobriyan <adobriyan@gmail.com> wrote: > > > On Mon, Jun 03, 2024 at 02:42:20PM +0200, Amer Al Shanawany wrote: > > > fix the following warning: > > > proc-empty-vm.c:385:17: warning: ignoring return value of ‘write’ > > > > > --- a/tools/testing/selftests/proc/proc-empty-vm.c > > > +++ b/tools/testing/selftests/proc/proc-empty-vm.c > > > @@ -381,9 +381,6 @@ static int test_proc_pid_statm(pid_t pid) > > > > > - if (0) { > > > - write(1, buf, rv); > > > - } > > > > no thanks > > Why not? > > Why does that code exist anyway? It at least needs a comment. OK, whatever. If test fails, it better record buggy output somewhere (to coredump or to terminal).
On 6/7/24 09:25, Alexey Dobriyan wrote: > On Tue, Jun 04, 2024 at 08:25:31PM -0700, Andrew Morton wrote: >> On Mon, 3 Jun 2024 17:24:47 +0300 Alexey Dobriyan <adobriyan@gmail.com> wrote: >> >>> On Mon, Jun 03, 2024 at 02:42:20PM +0200, Amer Al Shanawany wrote: >>>> fix the following warning: >>>> proc-empty-vm.c:385:17: warning: ignoring return value of ‘write’ >>> >>>> --- a/tools/testing/selftests/proc/proc-empty-vm.c >>>> +++ b/tools/testing/selftests/proc/proc-empty-vm.c >>>> @@ -381,9 +381,6 @@ static int test_proc_pid_statm(pid_t pid) >>> >>>> - if (0) { >>>> - write(1, buf, rv); >>>> - } >>> >>> no thanks >> >> Why not? >> >> Why does that code exist anyway? It at least needs a comment. > > OK, whatever. > > If test fails, it better record buggy output somewhere (to coredump or to terminal). +1 on reporting results - the best way to do this is to add a meaningful message for users to understand what went wrong. Please suggest how you would like this warning addressed and report the error. thanks, -- Shuah
diff --git a/tools/testing/selftests/proc/proc-empty-vm.c b/tools/testing/selftests/proc/proc-empty-vm.c index 56198d4ca2bf..b3f898aab4ab 100644 --- a/tools/testing/selftests/proc/proc-empty-vm.c +++ b/tools/testing/selftests/proc/proc-empty-vm.c @@ -381,9 +381,6 @@ static int test_proc_pid_statm(pid_t pid) assert(rv >= 0); assert(rv <= sizeof(buf)); - if (0) { - write(1, buf, rv); - } const char *p = buf; const char *const end = p + rv;
fix the following warning: proc-empty-vm.c:385:17: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 385 | write(1, buf, rv); | ^~~~~~~~~~~~~~~~~ Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/r/202404010211.ygidvMwa-lkp@intel.com/ Signed-off-by: Amer Al Shanawany <amer.shanawany@gmail.com> --- tools/testing/selftests/proc/proc-empty-vm.c | 3 --- 1 file changed, 3 deletions(-)