[libvirt] [PATCH] qemu: kill some dead stores
Daniel Veillard
veillard at redhat.com
Fri Jul 30 17:09:18 UTC 2010
On Fri, Jul 30, 2010 at 09:52:47AM -0600, Eric Blake wrote:
> Spotted by clang. The qemuConnectMonitor one is an outright bug,
> the other two are cosmetic.
>
> * src/qemu/qemu_monitor.c (qemuMonitorClose): Kill dead store.
> * src/qemu/qemu_driver.c (qemudDomainSaveImageStartVM): Likewise.
> (qemuConnectMonitor): Don't lose error status.
> ---
> src/qemu/qemu_driver.c | 2 --
> src/qemu/qemu_monitor.c | 4 +---
> 2 files changed, 1 insertions(+), 5 deletions(-)
>
> diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
> index 098f4da..57b8271 100644
> --- a/src/qemu/qemu_driver.c
> +++ b/src/qemu/qemu_driver.c
> @@ -1416,7 +1416,6 @@ qemuConnectMonitor(struct qemud_driver *driver, virDomainObjPtr vm)
> ret = qemuMonitorSetCapabilities(priv->mon);
> qemuDomainObjExitMonitorWithDriver(driver, vm);
>
> - ret = 0;
> error:
> if (ret < 0)
> qemuMonitorClose(priv->mon);
Hum, if we do this we change the behaviour in case of errors in
qemuMonitorSetCapabilities(), I wonder if this wasn't there to avoid
failing in that case, and if this was the case then it's the first
affectation we need to remove. I would wait until this gets clarified
(qemuMonitorSetCapabilities failure may not be a blocking factor to
starting a guest ...)
> @@ -6535,7 +6534,6 @@ qemudDomainSaveImageStartVM(virConnectPtr conn,
> wait_ret = qemudDomainSaveImageClose(fd, read_pid, &status);
> fd = -1;
> if (read_pid != -1) {
> - read_pid = -1;
> if (wait_ret == -1) {
> virReportSystemError(errno,
> _("failed to wait for process reading '%s'"),
this one is fine
> diff --git a/src/qemu/qemu_monitor.c b/src/qemu/qemu_monitor.c
> index f1494ff..2366fdb 100644
> --- a/src/qemu/qemu_monitor.c
> +++ b/src/qemu/qemu_monitor.c
> @@ -685,8 +685,6 @@ cleanup:
>
> void qemuMonitorClose(qemuMonitorPtr mon)
> {
> - int refs;
> -
> if (!mon)
> return;
>
> @@ -706,7 +704,7 @@ void qemuMonitorClose(qemuMonitorPtr mon)
> mon->closed = 1;
> }
>
> - if ((refs = qemuMonitorUnref(mon)) > 0)
> + if (qemuMonitorUnref(mon) > 0)
> qemuMonitorUnlock(mon);
> }
>
that too obviously,
Could you push the 2 last one until we find out for first one ?
thanks !
Daniel
--
Daniel Veillard | libxml Gnome XML XSLT toolkit http://xmlsoft.org/
daniel at veillard.com | Rpmfind RPM search engine http://rpmfind.net/
http://veillard.com/ | virtualization library http://libvirt.org/
More information about the libvir-list
mailing list