From: angquan yu <angquan21@xxxxxxxxx>
In tools/testing/selftests/proc/proc-empty->because the return value
of a write call was being ignored. This call was partof a conditional
debugging block (if (0) { ... }), which meant it would neveractually
execute.
This patch removes the unused debug write call. This cleanup resolves
the compi>warning about ignoring the result of write declared with
the warn_unused_resultattribute.
Removing this code also improves the clarity and maintainability of
the function, as it eliminates a non-functional block of code.
This is original warning: proc-empty-vm.c: In function
‘test_proc_pid_statm’ :proc-empty-vm.c:385:17:
warning: ignoring return value of ‘write’
declared with>385 | write(1, buf, rv);|
Signed-off-by: angquan yu <angquan21@xxxxxxxxx>
---
tools/testing/selftests/proc/proc-empty-vm.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/tools/testing/selftests/proc/proc-empty-vm.c b/tools/testing/selftests/proc/proc-empty-vm.c
index 5e7020630..d231e61e4 100644
--- a/tools/testing/selftests/proc/proc-empty-vm.c
+++ b/tools/testing/selftests/proc/proc-empty-vm.c
@@ -383,8 +383,10 @@ static int test_proc_pid_statm(pid_t pid)
assert(rv <= sizeof(buf));
if (0) {
ssize_t written = write(1, buf, rv);
+
if (written == -1) {
perror("write failed to /proc/${pid}");
+ return EXIT_FAILURE;
}
}
--
2.39.2
