[4/6] rt: Initialize mq_send input on tst-mqueue{5,6}
Commit Message
GCC with -Os warns that the mq_send input may be used uninitialized.
Although for the tests the data content sent is not important, since
both tests checks only if mq_notify was properly set, the warning is
correct and data is indeed uninitialized.
Checked on x86_64-linux-gnu and i686-linux-gnu.
---
rt/tst-mqueue5.c | 2 +-
rt/tst-mqueue6.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
Comments
On Wed, Sep 21, 2022 at 10:51:06AM -0300, Adhemerval Zanella via Libc-alpha wrote:
> GCC with -Os warns that the mq_send input may be used uninitialized.
> Although for the tests the data content sent is not important, since
> both tests checks only if mq_notify was properly set, the warning is
> correct and data is indeed uninitialized.
LGTM.
No regressions on x86_64. Pre-commit CI didn't run for these patches.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
> Checked on x86_64-linux-gnu and i686-linux-gnu.
> ---
> rt/tst-mqueue5.c | 2 +-
> rt/tst-mqueue6.c | 2 +-
> 2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/rt/tst-mqueue5.c b/rt/tst-mqueue5.c
> index 70d97a36c2..2b19b6a031 100644
> --- a/rt/tst-mqueue5.c
> +++ b/rt/tst-mqueue5.c
> @@ -58,7 +58,7 @@ rtmin_handler (int sig, siginfo_t *info, void *ctx)
> static int
> (mqsend) (mqd_t q, int line)
> {
> - char c;
> + char c = 0;
OK. Agreed. Data needs to be initialized.
> if (mq_send (q, &c, 1, 1) != 0)
> {
> printf ("mq_send on line %d failed with: %m\n", line);
> diff --git a/rt/tst-mqueue6.c b/rt/tst-mqueue6.c
> index bc875f101e..a22ac05aca 100644
> --- a/rt/tst-mqueue6.c
> +++ b/rt/tst-mqueue6.c
> @@ -40,7 +40,7 @@
> static int
> (mqsend) (mqd_t q, int line)
> {
> - char c;
> + char c = 0;
OK. Agreed. Data needs to be initialized.
> if (mq_send (q, &c, 1, 1) != 0)
> {
> printf ("mq_send on line %d failed with: %m\n", line);
> --
> 2.34.1
>
@@ -58,7 +58,7 @@ rtmin_handler (int sig, siginfo_t *info, void *ctx)
static int
(mqsend) (mqd_t q, int line)
{
- char c;
+ char c = 0;
if (mq_send (q, &c, 1, 1) != 0)
{
printf ("mq_send on line %d failed with: %m\n", line);
@@ -40,7 +40,7 @@
static int
(mqsend) (mqd_t q, int line)
{
- char c;
+ char c = 0;
if (mq_send (q, &c, 1, 1) != 0)
{
printf ("mq_send on line %d failed with: %m\n", line);