internal: Fix compiler warnings (#9646)

src/helpers/Monitor.cpp

@@ -1240,7 +1240,7 @@ void CMonitor::setSpecialWorkspace(const PHLWORKSPACE& pWorkspace) {
     }
 
     g_pEventManager->postEvent(SHyprIPCEvent{"activespecial", pWorkspace->m_szName + "," + szName});
-    g_pEventManager->postEvent(SHyprIPCEvent{"activespecialv2", pWorkspace->m_iID + "," + pWorkspace->m_szName + "," + szName});
+    g_pEventManager->postEvent(SHyprIPCEvent{"activespecialv2", std::to_string(pWorkspace->m_iID) + "," + pWorkspace->m_szName + "," + szName});
 
     g_pHyprRenderer->damageMonitor(self.lock());
 

src/macros.hpp

@@ -89,6 +89,7 @@
     {                                                                                                                                                                              \
         Debug::log(CRIT, "\n\nMEMORY CORRUPTED: Unreachable failed! (Reached an unreachable position, memory corruption!!!)");                                                     \
         raise(SIGABRT);                                                                                                                                                            \
+        std::unreachable();                                                                                                                                                        \
     }
 #else
 #define UNREACHABLE() std::unreachable();

src/plugins/PluginAPI.hpp

@@ -59,6 +59,12 @@ struct SVersionInfo {
 #define OPTIONAL
 #define HANDLE void*
 
+// C ABI is needed to prevent symbol mangling, but we don't actually need C compatibility,
+// so we ignore this warning about return types that are potentially incompatible with C.
+// Clang supports this pragma too.
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wreturn-type-c-linkage"
+
 class IHyprLayout;
 class CWindow;
 class IHyprWindowDecoration;
@@ -315,3 +321,5 @@ APICALL inline EXPORT const char* __hyprland_api_get_client_hash() {
     return GIT_COMMIT_HASH;
 }
 // NOLINTEND
+
+#pragma GCC diagnostic pop

src/protocols/DRMSyncobj.cpp

@@ -9,8 +9,7 @@
 #include <fcntl.h>
 using namespace Hyprutils::OS;
 
-CDRMSyncPointState::CDRMSyncPointState(WP<CDRMSyncobjTimelineResource> resource_, uint64_t point_, bool acquirePoint) :
+CDRMSyncPointState::CDRMSyncPointState(WP<CDRMSyncobjTimelineResource> resource_, uint64_t point_) : m_resource(resource_), m_point(point_) {}
-    m_resource(resource_), m_point(point_), m_acquirePoint(acquirePoint) {}
 
 const uint64_t& CDRMSyncPointState::point() {
     return m_point;
@@ -95,7 +94,7 @@ CDRMSyncobjSurfaceResource::CDRMSyncobjSurfaceResource(UP<CWpLinuxDrmSyncobjSurf
         }
 
         auto timeline  = CDRMSyncobjTimelineResource::fromResource(timeline_);
-        pendingAcquire = {timeline, ((uint64_t)hi << 32) | (uint64_t)lo, true};
+        pendingAcquire = {timeline, ((uint64_t)hi << 32) | (uint64_t)lo};
     });
 
     resource->setSetReleasePoint([this](CWpLinuxDrmSyncobjSurfaceV1* r, wl_resource* timeline_, uint32_t hi, uint32_t lo) {
@@ -105,7 +104,7 @@ CDRMSyncobjSurfaceResource::CDRMSyncobjSurfaceResource(UP<CWpLinuxDrmSyncobjSurf
         }
 
         auto timeline  = CDRMSyncobjTimelineResource::fromResource(timeline_);
-        pendingRelease = {timeline, ((uint64_t)hi << 32) | (uint64_t)lo, false};
+        pendingRelease = {timeline, ((uint64_t)hi << 32) | (uint64_t)lo};
     });
 
     listeners.surfacePrecommit = surface->events.precommit.registerListener([this](std::any d) {

src/protocols/DRMSyncobj.hpp

@@ -17,7 +17,7 @@ struct SSurfaceState;
 class CDRMSyncPointState {
   public:
     CDRMSyncPointState() = default;
-    CDRMSyncPointState(WP<CDRMSyncobjTimelineResource> resource_, uint64_t point_, bool acquirePoint);
+    CDRMSyncPointState(WP<CDRMSyncobjTimelineResource> resource_, uint64_t point_);
     ~CDRMSyncPointState() = default;
 
     const uint64_t&                                  point();
@@ -34,7 +34,6 @@ class CDRMSyncPointState {
     WP<CDRMSyncobjTimelineResource> m_resource         = {};
     uint64_t                        m_point            = 0;
     WP<CSyncTimeline>               m_timeline         = {};
-    bool                            m_acquirePoint     = false;
     bool                            m_acquireCommitted = false;
     bool                            m_releaseTaken     = false;
 };

src/protocols/PointerConstraints.hpp

@@ -33,7 +33,6 @@ class CPointerConstraint {
   private:
     SP<CZwpLockedPointerV1>         resourceL;
     SP<CZwpConfinedPointerV1>       resourceC;
-    wl_client*                      pClient = nullptr;
 
     WP<CWLSurface>                  pHLSurface;
 

src/protocols/XDGActivation.hpp

@@ -18,7 +18,6 @@ class CXDGActivationToken {
     uint32_t                  serial    = 0;
     std::string               appID     = "";
     bool                      committed = false;
-    bool                      used      = false;
 
     std::string               token = "";
 

src/protocols/core/DataDevice.hpp

@@ -50,7 +50,6 @@ class CWLDataOfferResource : public IDataOffer {
 
   private:
     SP<CWlDataOffer> resource;
-    wl_client*       pClient = nullptr;
 
     friend class CWLDataDeviceResource;
 };
@@ -89,7 +88,6 @@ class CWLDataSourceResource : public IDataSource {
 
   private:
     SP<CWlDataSource> resource;
-    wl_client*        pClient = nullptr;
 
     friend class CWLDataDeviceProtocol;
 };

src/xwayland/Dnd.cpp

@@ -129,7 +129,7 @@ void CX11DataDevice::sendEnter(uint32_t serial, SP<CWLSurfaceResource> surf, con
 
     xcb_window_t              targetWindow = getProxyWindow(XSURF->xID);
 
-    xcb_client_message_data_t data = {0};
+    xcb_client_message_data_t data = {{0}};
     data.data32[0]                 = g_pXWayland->pWM->dndSelection.window;
     data.data32[1]                 = XDND_VERSION << 24;
     data.data32[1] |= 1;
@@ -164,7 +164,7 @@ void CX11DataDevice::sendLeave() {
 
     xcb_window_t              targetWindow = getProxyWindow(lastSurface->xID);
 
-    xcb_client_message_data_t data = {0};
+    xcb_client_message_data_t data = {{0}};
     data.data32[0]                 = g_pXWayland->pWM->dndSelection.window;
 
     sendDndEvent(targetWindow, HYPRATOMS["XdndLeave"], data);
@@ -183,7 +183,7 @@ void CX11DataDevice::sendMotion(uint32_t timeMs, const Vector2D& local) {
     const auto                XCOORDS = g_pXWaylandManager->waylandToXWaylandCoords(lastSurfaceCoords + local);
     const uint32_t            coords  = ((uint32_t)XCOORDS.x << 16) | (uint32_t)XCOORDS.y;
 
-    xcb_client_message_data_t data = {0};
+    xcb_client_message_data_t data = {{0}};
     data.data32[0]                 = g_pXWayland->pWM->dndSelection.window;
     data.data32[2]                 = coords;
     data.data32[3]                 = timeMs;
@@ -204,7 +204,7 @@ void CX11DataDevice::sendDrop() {
 
     xcb_window_t              targetWindow = getProxyWindow(lastSurface->xID);
 
-    xcb_client_message_data_t data = {0};
+    xcb_client_message_data_t data = {{0}};
     data.data32[0]                 = g_pXWayland->pWM->dndSelection.window;
     data.data32[2]                 = lastTime;
 

src/xwayland/XWM.cpp

@@ -494,7 +494,7 @@ void CXWM::focusWindow(SP<CXWaylandSurface> surf) {
     if (surf->overrideRedirect)
         return;
 
-    xcb_client_message_data_t msg = {0};
+    xcb_client_message_data_t msg = {{0}};
     msg.data32[0]                 = HYPRATOMS["WM_TAKE_FOCUS"];
     msg.data32[1]                 = XCB_TIME_CURRENT_TIME;