Check the return value from write function to get rid of the warning during test compilation, shared below. Tested by compiling after the change, the warning disappears.
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);
Signed-off-by: Abhinav Jain jain.abhinav177@gmail.com --- tools/testing/selftests/proc/proc-empty-vm.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/tools/testing/selftests/proc/proc-empty-vm.c b/tools/testing/selftests/proc/proc-empty-vm.c index 56198d4ca2bf..510ab4a5330a 100644 --- a/tools/testing/selftests/proc/proc-empty-vm.c +++ b/tools/testing/selftests/proc/proc-empty-vm.c @@ -382,7 +382,12 @@ static int test_proc_pid_statm(pid_t pid) assert(rv >= 0); assert(rv <= sizeof(buf)); if (0) { - write(1, buf, rv); + ssize_t bytes_written = write(1, buf, rv); + + if (bytes_written != rv) { + perror("write"); + return EXIT_FAILURE; + } }
const char *p = buf;