ControllerInterface: Fix unused-result warning

Add ! before unused variables to 'use' them.

Ubuntu-x64 emits warnings for unused variables because gcc decides
it should ignore the void cast around them. See thread for discussion:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66425
This commit is contained in:
Dentomologist 2021-03-04 08:09:49 -08:00
parent 7ff8e3367f
commit 1fd332d3b7

View File

@ -365,7 +365,7 @@ static void StopHotplugThread()
// Write something to efd so that select() stops blocking.
const uint64_t value = 1;
static_cast<void>(write(s_wakeup_eventfd, &value, sizeof(uint64_t)));
static_cast<void>(!write(s_wakeup_eventfd, &value, sizeof(uint64_t)));
s_hotplug_thread.join();
close(s_wakeup_eventfd);
@ -525,7 +525,7 @@ bool evdevDevice::AddNode(std::string devnode, int fd, libevdev* dev)
ie.code = FF_AUTOCENTER;
ie.value = 0;
static_cast<void>(write(fd, &ie, sizeof(ie)));
static_cast<void>(!write(fd, &ie, sizeof(ie)));
}
// Constant FF effect
@ -725,7 +725,7 @@ void evdevDevice::Effect::UpdateEffect()
play.code = m_effect.id;
play.value = 1;
static_cast<void>(write(m_fd, &play, sizeof(play)));
static_cast<void>(!write(m_fd, &play, sizeof(play)));
}
else
{