Disable -Wunused-value for surfaceflinger
```
out/soong/.intermediates/frameworks/native/services/surfaceflinger/Tracing/tools/layertracegenerator/android_x86_64_silvermont/obj/frameworks/native/services/surfaceflinger/Scheduler/Scheduler.o frameworks/native/services/surfaceflinger/Scheduler/Scheduler.cpp
frameworks/native/services/surfaceflinger/Scheduler/Scheduler.cpp:432:29: error: ignoring temporary created by a constructor declared with 'nodiscard' attribute [-Werror,-Wunused-value]
432 | (std::scoped_lock(mDisplayLock), displayId == mPacesetterDisplayId));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
```
Flag: EXEMPT b/369277774
Bug: b/369277774
Change-Id: Idd45525cc3fe15c3b5e66332650ce8b7811ae026
diff --git a/services/surfaceflinger/Scheduler/Scheduler.cpp b/services/surfaceflinger/Scheduler/Scheduler.cpp
index 5e13154..2815cb7 100644
--- a/services/surfaceflinger/Scheduler/Scheduler.cpp
+++ b/services/surfaceflinger/Scheduler/Scheduler.cpp
@@ -426,6 +426,8 @@
eventThreadFor(cycle).onHdcpLevelsChanged(displayId, connectedLevel, maxLevel);
}
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunused-value" // b/369277774
bool Scheduler::onDisplayModeChanged(PhysicalDisplayId displayId, const FrameRateMode& mode) {
const bool isPacesetter =
FTL_FAKE_GUARD(kMainThreadContext,
@@ -446,6 +448,7 @@
return isPacesetter;
}
+#pragma clang diagnostic pop
void Scheduler::emitModeChangeIfNeeded() {
if (!mPolicy.modeOpt || !mPolicy.emittedModeOpt) {