28 files changed, 46 insertions, 50 deletions

diff --git a/src/core/hle/kernel/hle_ipc.h b/src/core/hle/kernel/hle_ipc.h
index a427cbc93..0ddc8df9e 100644
--- a/src/core/hle/kernel/hle_ipc.h
+++ b/src/core/hle/kernel/hle_ipc.h
@@ -141,7 +141,7 @@ public:
         if (index < DomainHandlerCount()) {
             domain_handlers[index] = nullptr;
         } else {
-            UNREACHABLE_MSG("Unexpected handler index {}", index);
+            ASSERT_MSG(false, "Unexpected handler index {}", index);
         }
     }
 
diff --git a/src/core/hle/kernel/init/init_slab_setup.cpp b/src/core/hle/kernel/init/init_slab_setup.cpp
index 34a8be052..9b6b284d0 100644
--- a/src/core/hle/kernel/init/init_slab_setup.cpp
+++ b/src/core/hle/kernel/init/init_slab_setup.cpp
@@ -244,7 +244,7 @@ void InitializeSlabHeaps(Core::System& system, KMemoryLayout& memory_layout) {
             FOREACH_SLAB_TYPE(INITIALIZE_SLAB_HEAP)
             // If we somehow get an invalid type, abort.
         default:
-            UNREACHABLE_MSG("Unknown slab type: {}", slab_types[i]);
+            ASSERT_MSG(false, "Unknown slab type: {}", slab_types[i]);
         }
 
         // If we've hit the end of a gap, free it.
diff --git a/src/core/hle/kernel/k_address_arbiter.h b/src/core/hle/kernel/k_address_arbiter.h
index e46e0d848..5fa19d386 100644
--- a/src/core/hle/kernel/k_address_arbiter.h
+++ b/src/core/hle/kernel/k_address_arbiter.h
@@ -35,7 +35,7 @@ public:
         case Svc::SignalType::SignalAndModifyByWaitingCountIfEqual:
             return SignalAndModifyByWaitingCountIfEqual(addr, value, count);
         }
-        UNREACHABLE();
+        ASSERT(false);
         return ResultUnknown;
     }
 
@@ -49,7 +49,7 @@ public:
         case Svc::ArbitrationType::WaitIfEqual:
             return WaitIfEqual(addr, value, timeout);
         }
-        UNREACHABLE();
+        ASSERT(false);
         return ResultUnknown;
     }
 
diff --git a/src/core/hle/kernel/k_address_space_info.cpp b/src/core/hle/kernel/k_address_space_info.cpp
index bc37cadda..3e612a207 100644
--- a/src/core/hle/kernel/k_address_space_info.cpp
+++ b/src/core/hle/kernel/k_address_space_info.cpp
@@ -84,7 +84,7 @@ u64 KAddressSpaceInfo::GetAddressSpaceStart(std::size_t width, Type type) {
         ASSERT(IsAllowedIndexForAddress(AddressSpaceIndices39Bit[index]));
         return AddressSpaceInfos[AddressSpaceIndices39Bit[index]].address;
     }
-    UNREACHABLE();
+    ASSERT(false);
     return 0;
 }
 
@@ -101,7 +101,7 @@ std::size_t KAddressSpaceInfo::GetAddressSpaceSize(std::size_t width, Type type)
         ASSERT(IsAllowed39BitType(type));
         return AddressSpaceInfos[AddressSpaceIndices39Bit[index]].size;
     }
-    UNREACHABLE();
+    ASSERT(false);
     return 0;
 }
 
diff --git a/src/core/hle/kernel/k_memory_manager.cpp b/src/core/hle/kernel/k_memory_manager.cpp
index a55db3088..58e540f31 100644
--- a/src/core/hle/kernel/k_memory_manager.cpp
+++ b/src/core/hle/kernel/k_memory_manager.cpp
@@ -29,7 +29,7 @@ constexpr KMemoryManager::Pool GetPoolFromMemoryRegionType(u32 type) {
     } else if ((type | KMemoryRegionType_DramSystemNonSecurePool) == type) {
         return KMemoryManager::Pool::SystemNonSecure;
     } else {
-        UNREACHABLE_MSG("InvalidMemoryRegionType for conversion to Pool");
+        ASSERT_MSG(false, "InvalidMemoryRegionType for conversion to Pool");
         return {};
     }
 }
diff --git a/src/core/hle/kernel/k_page_table.cpp b/src/core/hle/kernel/k_page_table.cpp
index 68867a2bb..504e22cb9 100644
--- a/src/core/hle/kernel/k_page_table.cpp
+++ b/src/core/hle/kernel/k_page_table.cpp
@@ -35,7 +35,7 @@ constexpr std::size_t GetAddressSpaceWidthFromType(FileSys::ProgramAddressSpaceT
     case FileSys::ProgramAddressSpaceType::Is39Bit:
         return 39;
     default:
-        UNREACHABLE();
+        ASSERT(false);
         return {};
     }
 }
@@ -128,7 +128,7 @@ ResultCode KPageTable::InitializeForProcess(FileSys::ProgramAddressSpaceType as_
     const std::size_t needed_size{
         (alias_region_size + heap_region_size + stack_region_size + kernel_map_region_size)};
     if (alloc_size < needed_size) {
-        UNREACHABLE();
+        ASSERT(false);
         return ResultOutOfMemory;
     }
 
@@ -1430,7 +1430,7 @@ ResultCode KPageTable::SetProcessMemoryPermission(VAddr addr, std::size_t size,
             new_state = KMemoryState::AliasCodeData;
             break;
         default:
-            UNREACHABLE();
+            ASSERT(false);
         }
     }
 
@@ -1823,9 +1823,7 @@ void KPageTable::AddRegionToPages(VAddr start, std::size_t num_pages,
     VAddr addr{start};
     while (addr < start + (num_pages * PageSize)) {
         const PAddr paddr{GetPhysicalAddr(addr)};
-        if (!paddr) {
-            UNREACHABLE();
-        }
+        ASSERT(paddr != 0);
         page_linked_list.AddBlock(paddr, 1);
         addr += PageSize;
     }
@@ -1856,7 +1854,7 @@ ResultCode KPageTable::Operate(VAddr addr, std::size_t num_pages, const KPageLin
             system.Memory().MapMemoryRegion(page_table_impl, addr, size, node.GetAddress());
             break;
         default:
-            UNREACHABLE();
+            ASSERT(false);
         }
 
         addr += size;
@@ -1887,7 +1885,7 @@ ResultCode KPageTable::Operate(VAddr addr, std::size_t num_pages, KMemoryPermiss
     case OperationType::ChangePermissionsAndRefresh:
         break;
     default:
-        UNREACHABLE();
+        ASSERT(false);
     }
     return ResultSuccess;
 }
@@ -1924,7 +1922,6 @@ VAddr KPageTable::GetRegionAddress(KMemoryState state) const {
         return code_region_start;
     default:
         UNREACHABLE();
-        return {};
     }
 }
 
@@ -1960,7 +1957,6 @@ std::size_t KPageTable::GetRegionSize(KMemoryState state) const {
         return code_region_end - code_region_start;
     default:
         UNREACHABLE();
-        return {};
     }
 }
 
diff --git a/src/core/hle/kernel/k_port.cpp b/src/core/hle/kernel/k_port.cpp
index a31861cdb..51c2cd1ef 100644
--- a/src/core/hle/kernel/k_port.cpp
+++ b/src/core/hle/kernel/k_port.cpp
@@ -60,7 +60,7 @@ ResultCode KPort::EnqueueSession(KServerSession* session) {
     if (auto session_ptr = server.GetSessionRequestHandler().lock()) {
         session_ptr->ClientConnected(server.AcceptSession());
     } else {
-        UNREACHABLE();
+        ASSERT(false);
     }
 
     return ResultSuccess;
diff --git a/src/core/hle/kernel/k_process.cpp b/src/core/hle/kernel/k_process.cpp
index dcfeacccd..8c79b4f0f 100644
--- a/src/core/hle/kernel/k_process.cpp
+++ b/src/core/hle/kernel/k_process.cpp
@@ -350,7 +350,7 @@ ResultCode KProcess::LoadFromMetadata(const FileSys::ProgramMetadata& metadata,
         break;
 
     default:
-        UNREACHABLE();
+        ASSERT(false);
     }
 
     // Create TLS region
diff --git a/src/core/hle/kernel/k_server_session.cpp b/src/core/hle/kernel/k_server_session.cpp
index 7e39f6d50..60f8ed470 100644
--- a/src/core/hle/kernel/k_server_session.cpp
+++ b/src/core/hle/kernel/k_server_session.cpp
@@ -97,13 +97,13 @@ ResultCode KServerSession::HandleDomainSyncRequest(Kernel::HLERequestContext& co
                          "object_id {} is too big! This probably means a recent service call "
                          "to {} needed to return a new interface!",
                          object_id, name);
-            UNREACHABLE();
+            ASSERT(false);
             return ResultSuccess; // Ignore error if asserts are off
         }
         if (auto strong_ptr = manager->DomainHandler(object_id - 1).lock()) {
             return strong_ptr->HandleSyncRequest(*this, context);
         } else {
-            UNREACHABLE();
+            ASSERT(false);
             return ResultSuccess;
         }
 
diff --git a/src/core/hle/kernel/k_thread.cpp b/src/core/hle/kernel/k_thread.cpp
index 940334f59..ea2160099 100644
--- a/src/core/hle/kernel/k_thread.cpp
+++ b/src/core/hle/kernel/k_thread.cpp
@@ -133,7 +133,7 @@ ResultCode KThread::Initialize(KThreadFunction func, uintptr_t arg, VAddr user_s
         UNIMPLEMENTED();
         break;
     default:
-        UNREACHABLE_MSG("KThread::Initialize: Unknown ThreadType {}", static_cast<u32>(type));
+        ASSERT_MSG(false, "KThread::Initialize: Unknown ThreadType {}", static_cast<u32>(type));
         break;
     }
     thread_type = type;
diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp
index 66e0ce2d0..584fa5b1c 100644
--- a/src/core/hle/kernel/svc.cpp
+++ b/src/core/hle/kernel/svc.cpp
@@ -1876,7 +1876,7 @@ static void SleepThread(Core::System& system, s64 nanoseconds) {
         KScheduler::YieldToAnyThread(kernel);
     } else {
         // Nintendo does nothing at all if an otherwise invalid value is passed.
-        UNREACHABLE_MSG("Unimplemented sleep yield type '{:016X}'!", nanoseconds);
+        ASSERT_MSG(false, "Unimplemented sleep yield type '{:016X}'!", nanoseconds);
     }
 }
 
diff --git a/src/core/hle/service/am/applets/applet_controller.cpp b/src/core/hle/service/am/applets/applet_controller.cpp
index 655f2e936..0a5603d18 100644
--- a/src/core/hle/service/am/applets/applet_controller.cpp
+++ b/src/core/hle/service/am/applets/applet_controller.cpp
@@ -178,7 +178,7 @@ ResultCode Controller::GetStatus() const {
 }
 
 void Controller::ExecuteInteractive() {
-    UNREACHABLE_MSG("Attempted to call interactive execution on non-interactive applet.");
+    ASSERT_MSG(false, "Attempted to call interactive execution on non-interactive applet.");
 }
 
 void Controller::Execute() {
diff --git a/src/core/hle/service/am/applets/applet_error.cpp b/src/core/hle/service/am/applets/applet_error.cpp
index 911b2c229..0b87c60b9 100644
--- a/src/core/hle/service/am/applets/applet_error.cpp
+++ b/src/core/hle/service/am/applets/applet_error.cpp
@@ -156,7 +156,7 @@ ResultCode Error::GetStatus() const {
 }
 
 void Error::ExecuteInteractive() {
-    UNREACHABLE_MSG("Unexpected interactive applet data!");
+    ASSERT_MSG(false, "Unexpected interactive applet data!");
 }
 
 void Error::Execute() {
diff --git a/src/core/hle/service/am/applets/applet_general_backend.cpp b/src/core/hle/service/am/applets/applet_general_backend.cpp
index 3fe1a390a..41c002ef2 100644
--- a/src/core/hle/service/am/applets/applet_general_backend.cpp
+++ b/src/core/hle/service/am/applets/applet_general_backend.cpp
@@ -76,7 +76,7 @@ ResultCode Auth::GetStatus() const {
 }
 
 void Auth::ExecuteInteractive() {
-    UNREACHABLE_MSG("Unexpected interactive applet data.");
+    ASSERT_MSG(false, "Unexpected interactive applet data.");
 }
 
 void Auth::Execute() {
@@ -175,7 +175,7 @@ ResultCode PhotoViewer::GetStatus() const {
 }
 
 void PhotoViewer::ExecuteInteractive() {
-    UNREACHABLE_MSG("Unexpected interactive applet data.");
+    ASSERT_MSG(false, "Unexpected interactive applet data.");
 }
 
 void PhotoViewer::Execute() {
diff --git a/src/core/hle/service/am/applets/applet_mii_edit.cpp b/src/core/hle/service/am/applets/applet_mii_edit.cpp
index 3acde1630..8d847c3f6 100644
--- a/src/core/hle/service/am/applets/applet_mii_edit.cpp
+++ b/src/core/hle/service/am/applets/applet_mii_edit.cpp
@@ -67,7 +67,7 @@ ResultCode MiiEdit::GetStatus() const {
 }
 
 void MiiEdit::ExecuteInteractive() {
-    UNREACHABLE_MSG("Attempted to call interactive execution on non-interactive applet.");
+    ASSERT_MSG(false, "Attempted to call interactive execution on non-interactive applet.");
 }
 
 void MiiEdit::Execute() {
diff --git a/src/core/hle/service/am/applets/applet_profile_select.cpp b/src/core/hle/service/am/applets/applet_profile_select.cpp
index fd16f2e49..02049fd9f 100644
--- a/src/core/hle/service/am/applets/applet_profile_select.cpp
+++ b/src/core/hle/service/am/applets/applet_profile_select.cpp
@@ -44,7 +44,7 @@ ResultCode ProfileSelect::GetStatus() const {
 }
 
 void ProfileSelect::ExecuteInteractive() {
-    UNREACHABLE_MSG("Attempted to call interactive execution on non-interactive applet.");
+    ASSERT_MSG(false, "Attempted to call interactive execution on non-interactive applet.");
 }
 
 void ProfileSelect::Execute() {
diff --git a/src/core/hle/service/am/applets/applet_software_keyboard.cpp b/src/core/hle/service/am/applets/applet_software_keyboard.cpp
index 7c21365e4..4116fbaa7 100644
--- a/src/core/hle/service/am/applets/applet_software_keyboard.cpp
+++ b/src/core/hle/service/am/applets/applet_software_keyboard.cpp
@@ -71,7 +71,7 @@ void SoftwareKeyboard::Initialize() {
         InitializeBackground(applet_mode);
         break;
     default:
-        UNREACHABLE_MSG("Invalid LibraryAppletMode={}", applet_mode);
+        ASSERT_MSG(false, "Invalid LibraryAppletMode={}", applet_mode);
         break;
     }
 }
diff --git a/src/core/hle/service/am/applets/applet_web_browser.cpp b/src/core/hle/service/am/applets/applet_web_browser.cpp
index 2aa4a00ad..7b3f77a51 100644
--- a/src/core/hle/service/am/applets/applet_web_browser.cpp
+++ b/src/core/hle/service/am/applets/applet_web_browser.cpp
@@ -279,7 +279,7 @@ void WebBrowser::Initialize() {
         InitializeLobby();
         break;
     default:
-        UNREACHABLE_MSG("Invalid ShimKind={}", web_arg_header.shim_kind);
+        ASSERT_MSG(false, "Invalid ShimKind={}", web_arg_header.shim_kind);
         break;
     }
 }
@@ -320,7 +320,7 @@ void WebBrowser::Execute() {
         ExecuteLobby();
         break;
     default:
-        UNREACHABLE_MSG("Invalid ShimKind={}", web_arg_header.shim_kind);
+        ASSERT_MSG(false, "Invalid ShimKind={}", web_arg_header.shim_kind);
         WebBrowserExit(WebExitReason::EndButtonPressed);
         break;
     }
diff --git a/src/core/hle/service/filesystem/fsp_srv.cpp b/src/core/hle/service/filesystem/fsp_srv.cpp
index ddfcba0f1..fae6e5aff 100644
--- a/src/core/hle/service/filesystem/fsp_srv.cpp
+++ b/src/core/hle/service/filesystem/fsp_srv.cpp
@@ -899,7 +899,7 @@ void FSP_SRV::OpenSaveDataFileSystem(Kernel::HLERequestContext& ctx) {
     case FileSys::SaveDataSpaceId::TemporaryStorage:
     case FileSys::SaveDataSpaceId::ProperSystem:
     case FileSys::SaveDataSpaceId::SafeMode:
-        UNREACHABLE();
+        ASSERT(false);
     }
 
     auto filesystem = std::make_shared<IFileSystem>(system, std::move(dir.Unwrap()),
diff --git a/src/core/hle/service/hid/controllers/npad.cpp b/src/core/hle/service/hid/controllers/npad.cpp
index 1e04ee3f2..ac5c38cc6 100644
--- a/src/core/hle/service/hid/controllers/npad.cpp
+++ b/src/core/hle/service/hid/controllers/npad.cpp
@@ -160,7 +160,7 @@ void Controller_NPad::InitNewlyAddedController(Core::HID::NpadIdType npad_id) {
     shared_memory->system_properties.raw = 0;
     switch (controller_type) {
     case Core::HID::NpadStyleIndex::None:
-        UNREACHABLE();
+        ASSERT(false);
         break;
     case Core::HID::NpadStyleIndex::ProController:
         shared_memory->style_tag.fullkey.Assign(1);
@@ -422,7 +422,7 @@ void Controller_NPad::OnUpdate(const Core::Timing::CoreTiming& core_timing) {
         libnx_state.connection_status.is_connected.Assign(1);
         switch (controller_type) {
         case Core::HID::NpadStyleIndex::None:
-            UNREACHABLE();
+            ASSERT(false);
             break;
         case Core::HID::NpadStyleIndex::ProController:
         case Core::HID::NpadStyleIndex::NES:
@@ -597,7 +597,7 @@ void Controller_NPad::OnMotionUpdate(const Core::Timing::CoreTiming& core_timing
 
         switch (controller_type) {
         case Core::HID::NpadStyleIndex::None:
-            UNREACHABLE();
+            ASSERT(false);
             break;
         case Core::HID::NpadStyleIndex::ProController:
         case Core::HID::NpadStyleIndex::Pokeball:
@@ -856,7 +856,7 @@ void Controller_NPad::VibrateController(
     }
 
     if (vibration_device_handle.device_index == Core::HID::DeviceIndex::None) {
-        UNREACHABLE_MSG("DeviceIndex should never be None!");
+        ASSERT_MSG(false, "DeviceIndex should never be None!");
         return;
     }
 
diff --git a/src/core/hle/service/hid/hid.cpp b/src/core/hle/service/hid/hid.cpp
index 8a496c38c..dc5d0366d 100644
--- a/src/core/hle/service/hid/hid.cpp
+++ b/src/core/hle/service/hid/hid.cpp
@@ -1441,7 +1441,7 @@ void Hid::GetVibrationDeviceInfo(Kernel::HLERequestContext& ctx) {
         break;
     case Core::HID::DeviceIndex::None:
     default:
-        UNREACHABLE_MSG("DeviceIndex should never be None!");
+        ASSERT_MSG(false, "DeviceIndex should never be None!");
         vibration_device_info.position = Core::HID::VibrationDevicePosition::None;
         break;
     }
diff --git a/src/core/hle/service/ldr/ldr.cpp b/src/core/hle/service/ldr/ldr.cpp
index fa72fcba9..72e4902cb 100644
--- a/src/core/hle/service/ldr/ldr.cpp
+++ b/src/core/hle/service/ldr/ldr.cpp
@@ -347,7 +347,7 @@ public:
         }
 
         if (!succeeded) {
-            UNREACHABLE_MSG("Out of address space!");
+            ASSERT_MSG(false, "Out of address space!");
             return Kernel::ResultOutOfMemory;
         }
 
diff --git a/src/core/hle/service/mii/mii_manager.cpp b/src/core/hle/service/mii/mii_manager.cpp
index 4964539f9..08300a1a6 100644
--- a/src/core/hle/service/mii/mii_manager.cpp
+++ b/src/core/hle/service/mii/mii_manager.cpp
@@ -290,7 +290,7 @@ MiiStoreData BuildRandomStoreData(Age age, Gender gender, Race race, const Commo
     u8 glasses_type{};
     while (glasses_type_start < glasses_type_info.values[glasses_type]) {
         if (++glasses_type >= glasses_type_info.values_count) {
-            UNREACHABLE();
+            ASSERT(false);
             break;
         }
     }
diff --git a/src/core/hle/service/nvdrv/syncpoint_manager.cpp b/src/core/hle/service/nvdrv/syncpoint_manager.cpp
index f77f0df27..a6fa943e8 100644
--- a/src/core/hle/service/nvdrv/syncpoint_manager.cpp
+++ b/src/core/hle/service/nvdrv/syncpoint_manager.cpp
@@ -23,7 +23,7 @@ u32 SyncpointManager::AllocateSyncpoint() {
             return syncpoint_id;
         }
     }
-    UNREACHABLE_MSG("No more available syncpoints!");
+    ASSERT_MSG(false, "No more available syncpoints!");
     return {};
 }
 
diff --git a/src/core/hle/service/nvflinger/buffer_queue_producer.cpp b/src/core/hle/service/nvflinger/buffer_queue_producer.cpp
index fe95d1b73..337431488 100644
--- a/src/core/hle/service/nvflinger/buffer_queue_producer.cpp
+++ b/src/core/hle/service/nvflinger/buffer_queue_producer.cpp
@@ -659,7 +659,7 @@ Status BufferQueueProducer::Query(NativeWindow what, s32* out_value) {
         value = core->consumer_usage_bit;
         break;
     default:
-        UNREACHABLE();
+        ASSERT(false);
         return Status::BadValue;
     }
 
diff --git a/src/core/hle/service/time/standard_user_system_clock_core.cpp b/src/core/hle/service/time/standard_user_system_clock_core.cpp
index f0cc9a155..508091dc2 100644
--- a/src/core/hle/service/time/standard_user_system_clock_core.cpp
+++ b/src/core/hle/service/time/standard_user_system_clock_core.cpp
@@ -48,12 +48,12 @@ ResultCode StandardUserSystemClockCore::GetClockContext(Core::System& system,
 }
 
 ResultCode StandardUserSystemClockCore::Flush(const SystemClockContext&) {
-    UNREACHABLE();
+    UNIMPLEMENTED();
     return ERROR_NOT_IMPLEMENTED;
 }
 
 ResultCode StandardUserSystemClockCore::SetClockContext(const SystemClockContext&) {
-    UNREACHABLE();
+    UNIMPLEMENTED();
     return ERROR_NOT_IMPLEMENTED;
 }
 
diff --git a/src/core/hle/service/time/time_manager.cpp b/src/core/hle/service/time/time_manager.cpp
index acc038dbf..28667710e 100644
--- a/src/core/hle/service/time/time_manager.cpp
+++ b/src/core/hle/service/time/time_manager.cpp
@@ -111,7 +111,7 @@ struct TimeManager::Impl final {
                               FileSys::VirtualFile& vfs_file) {
         if (time_zone_content_manager.GetTimeZoneManager().SetDeviceLocationNameWithTimeZoneRule(
                 location_name, vfs_file) != ResultSuccess) {
-            UNREACHABLE();
+            ASSERT(false);
             return;
         }
 
@@ -155,7 +155,7 @@ struct TimeManager::Impl final {
         } else {
             if (standard_local_system_clock_core.SetCurrentTime(system_, posix_time) !=
                 ResultSuccess) {
-                UNREACHABLE();
+                ASSERT(false);
                 return;
             }
         }
@@ -170,7 +170,7 @@ struct TimeManager::Impl final {
 
         if (standard_network_system_clock_core.SetSystemClockContext(clock_context) !=
             ResultSuccess) {
-            UNREACHABLE();
+            ASSERT(false);
             return;
         }
 
@@ -183,7 +183,7 @@ struct TimeManager::Impl final {
                                       Clock::SteadyClockTimePoint steady_clock_time_point) {
         if (standard_user_system_clock_core.SetAutomaticCorrectionEnabled(
                 system_, is_automatic_correction_enabled) != ResultSuccess) {
-            UNREACHABLE();
+            ASSERT(false);
             return;
         }
 
@@ -203,7 +203,7 @@ struct TimeManager::Impl final {
         if (GetStandardLocalSystemClockCore()
                 .SetCurrentTime(system_, timespan.ToSeconds())
                 .IsError()) {
-            UNREACHABLE();
+            ASSERT(false);
             return;
         }
     }
diff --git a/src/core/hle/service/time/time_zone_manager.cpp b/src/core/hle/service/time/time_zone_manager.cpp
index eeec34436..fee05ec7a 100644
--- a/src/core/hle/service/time/time_zone_manager.cpp
+++ b/src/core/hle/service/time/time_zone_manager.cpp
@@ -279,7 +279,7 @@ static constexpr int TransitionTime(int year, Rule rule, int offset) {
         break;
     }
     default:
-        UNREACHABLE();
+        ASSERT(false);
     }
     return value + rule.transition_time + offset;
 }