core/CMakeLists: Make some warnings errors

Makes our error coverage a little more consistent across the board by
applying it to Linux side of things as well. This also makes it more
consistent with the warning settings in other libraries in the project.

This also updates httplib to 0.7.9, as there are several warning
cleanups made that allow us to enable several warnings as errors.

28 files changed, 133 insertions, 132 deletions

diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index d0c405ec7..9760be4e4 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -623,6 +623,17 @@ if (MSVC)
         # 'context' : truncation from 'type1' to 'type2'
         /we4305
     )
+else()
+    target_compile_options(core PRIVATE
+        -Werror=conversion
+        -Werror=ignored-qualifiers
+        -Werror=implicit-fallthrough
+        -Werror=reorder
+        -Werror=sign-compare
+        -Werror=unused-but-set-parameter
+        -Werror=unused-but-set-variable
+        -Werror=unused-variable
+    )
 endif()
 
 create_target_directory_groups(core)
diff --git a/src/core/crypto/key_manager.cpp b/src/core/crypto/key_manager.cpp
index 65d246050..da15f764a 100644
--- a/src/core/crypto/key_manager.cpp
+++ b/src/core/crypto/key_manager.cpp
@@ -411,7 +411,7 @@ Loader::ResultStatus DeriveSDKeys(std::array<Key256, 2>& sd_keys, KeyManager& ke
     // Combine sources and seed
     for (auto& source : sd_key_sources) {
         for (std::size_t i = 0; i < source.size(); ++i) {
-            source[i] ^= sd_seed[i & 0xF];
+            source[i] = static_cast<u8>(source[i] ^ sd_seed[i & 0xF]);
         }
     }
 
diff --git a/src/core/file_sys/fsmitm_romfsbuild.cpp b/src/core/file_sys/fsmitm_romfsbuild.cpp
index 2aff2708a..c52fafb6f 100644
--- a/src/core/file_sys/fsmitm_romfsbuild.cpp
+++ b/src/core/file_sys/fsmitm_romfsbuild.cpp
@@ -266,8 +266,9 @@ std::multimap<u64, VirtualFile> RomFSBuildContext::Build() {
         cur_file->offset = file_partition_size;
         file_partition_size += cur_file->size;
         cur_file->entry_offset = entry_offset;
-        entry_offset += sizeof(RomFSFileEntry) +
-                        Common::AlignUp(cur_file->path_len - cur_file->cur_path_ofs, 4);
+        entry_offset +=
+            static_cast<u32>(sizeof(RomFSFileEntry) +
+                             Common::AlignUp(cur_file->path_len - cur_file->cur_path_ofs, 4));
         prev_file = cur_file;
     }
     // Assign deferred parent/sibling ownership.
@@ -284,8 +285,9 @@ std::multimap<u64, VirtualFile> RomFSBuildContext::Build() {
     for (const auto& it : directories) {
         cur_dir = it.second;
         cur_dir->entry_offset = entry_offset;
-        entry_offset += sizeof(RomFSDirectoryEntry) +
-                        Common::AlignUp(cur_dir->path_len - cur_dir->cur_path_ofs, 4);
+        entry_offset +=
+            static_cast<u32>(sizeof(RomFSDirectoryEntry) +
+                             Common::AlignUp(cur_dir->path_len - cur_dir->cur_path_ofs, 4));
     }
     // Assign deferred parent/sibling ownership.
     for (auto it = directories.rbegin(); it->second != root; ++it) {
diff --git a/src/core/file_sys/ips_layer.cpp b/src/core/file_sys/ips_layer.cpp
index dd779310f..a6101f1c0 100644
--- a/src/core/file_sys/ips_layer.cpp
+++ b/src/core/file_sys/ips_layer.cpp
@@ -299,7 +299,7 @@ void IPSwitchCompiler::Parse() {
                              patch_text->GetName(), offset, Common::HexToString(replace));
                 }
 
-                patch.records.insert_or_assign(offset, std::move(replace));
+                patch.records.insert_or_assign(static_cast<u32>(offset), std::move(replace));
             }
 
             patches.push_back(std::move(patch));
diff --git a/src/core/file_sys/nca_metadata.cpp b/src/core/file_sys/nca_metadata.cpp
index 2d1476e3a..3596541b2 100644
--- a/src/core/file_sys/nca_metadata.cpp
+++ b/src/core/file_sys/nca_metadata.cpp
@@ -108,7 +108,7 @@ std::vector<u8> CNMT::Serialize() const {
         memcpy(out.data() + sizeof(CNMTHeader), &opt_header, sizeof(OptionalHeader));
     }
 
-    auto offset = header.table_offset;
+    u64_le offset = header.table_offset;
 
     for (const auto& rec : content_records) {
         memcpy(out.data() + offset + sizeof(CNMTHeader), &rec, sizeof(ContentRecord));
diff --git a/src/core/file_sys/patch_manager.cpp b/src/core/file_sys/patch_manager.cpp
index b9c09b456..807b05821 100644
--- a/src/core/file_sys/patch_manager.cpp
+++ b/src/core/file_sys/patch_manager.cpp
@@ -29,7 +29,7 @@
 namespace FileSys {
 namespace {
 
-constexpr u64 SINGLE_BYTE_MODULUS = 0x100;
+constexpr u32 SINGLE_BYTE_MODULUS = 0x100;
 constexpr u64 DLC_BASE_TITLE_ID_MASK = 0xFFFFFFFFFFFFE000;
 
 constexpr std::array<const char*, 14> EXEFS_FILE_NAMES{
diff --git a/src/core/frontend/emu_window.cpp b/src/core/frontend/emu_window.cpp
index 9a081fbd4..8c1193894 100644
--- a/src/core/frontend/emu_window.cpp
+++ b/src/core/frontend/emu_window.cpp
@@ -84,10 +84,12 @@ void EmuWindow::TouchPressed(unsigned framebuffer_x, unsigned framebuffer_y) {
         return;
 
     std::lock_guard guard{touch_state->mutex};
-    touch_state->touch_x = static_cast<float>(framebuffer_x - framebuffer_layout.screen.left) /
-                           (framebuffer_layout.screen.right - framebuffer_layout.screen.left);
-    touch_state->touch_y = static_cast<float>(framebuffer_y - framebuffer_layout.screen.top) /
-                           (framebuffer_layout.screen.bottom - framebuffer_layout.screen.top);
+    touch_state->touch_x =
+        static_cast<float>(framebuffer_x - framebuffer_layout.screen.left) /
+        static_cast<float>(framebuffer_layout.screen.right - framebuffer_layout.screen.left);
+    touch_state->touch_y =
+        static_cast<float>(framebuffer_y - framebuffer_layout.screen.top) /
+        static_cast<float>(framebuffer_layout.screen.bottom - framebuffer_layout.screen.top);
 
     touch_state->touch_pressed = true;
 }
diff --git a/src/core/frontend/framebuffer_layout.cpp b/src/core/frontend/framebuffer_layout.cpp
index c1fbc235b..1acc82497 100644
--- a/src/core/frontend/framebuffer_layout.cpp
+++ b/src/core/frontend/framebuffer_layout.cpp
@@ -14,8 +14,8 @@ namespace Layout {
 template <class T>
 static Common::Rectangle<T> MaxRectangle(Common::Rectangle<T> window_area,
                                          float screen_aspect_ratio) {
-    float scale = std::min(static_cast<float>(window_area.GetWidth()),
-                           window_area.GetHeight() / screen_aspect_ratio);
+    const float scale = std::min(static_cast<float>(window_area.GetWidth()),
+                                 static_cast<float>(window_area.GetHeight()) / screen_aspect_ratio);
     return Common::Rectangle<T>{0, 0, static_cast<T>(std::round(scale)),
                                 static_cast<T>(std::round(scale * screen_aspect_ratio))};
 }
@@ -27,7 +27,7 @@ FramebufferLayout DefaultFrameLayout(u32 width, u32 height) {
     // so just calculate them both even if the other isn't showing.
     FramebufferLayout res{width, height, false, {}};
 
-    const float window_aspect_ratio = static_cast<float>(height) / width;
+    const float window_aspect_ratio = static_cast<float>(height) / static_cast<float>(width);
     const float emulation_aspect_ratio = EmulationAspectRatio(
         static_cast<AspectRatio>(Settings::values.aspect_ratio.GetValue()), window_aspect_ratio);
 
diff --git a/src/core/gdbstub/gdbstub.cpp b/src/core/gdbstub/gdbstub.cpp
index 79f22a403..97ee65464 100644
--- a/src/core/gdbstub/gdbstub.cpp
+++ b/src/core/gdbstub/gdbstub.cpp
@@ -291,11 +291,11 @@ static void FpuWrite(std::size_t id, u128 val, Kernel::Thread* thread = nullptr)
  */
 static u8 HexCharToValue(u8 hex) {
     if (hex >= '0' && hex <= '9') {
-        return hex - '0';
+        return static_cast<u8>(hex - '0');
     } else if (hex >= 'a' && hex <= 'f') {
-        return hex - 'a' + 0xA;
+        return static_cast<u8>(hex - 'a' + 0xA);
     } else if (hex >= 'A' && hex <= 'F') {
-        return hex - 'A' + 0xA;
+        return static_cast<u8>(hex - 'A' + 0xA);
     }
 
     LOG_ERROR(Debug_GDBStub, "Invalid nibble: {} ({:02X})", hex, hex);
@@ -310,9 +310,9 @@ static u8 HexCharToValue(u8 hex) {
 static u8 NibbleToHex(u8 n) {
     n &= 0xF;
     if (n < 0xA) {
-        return '0' + n;
+        return static_cast<u8>('0' + n);
     } else {
-        return 'a' + n - 0xA;
+        return static_cast<u8>('a' + n - 0xA);
     }
 }
 
@@ -355,8 +355,8 @@ static u64 HexToLong(const u8* src, std::size_t len) {
  */
 static void MemToGdbHex(u8* dest, const u8* src, std::size_t len) {
     while (len-- > 0) {
-        u8 tmp = *src++;
-        *dest++ = NibbleToHex(tmp >> 4);
+        const u8 tmp = *src++;
+        *dest++ = NibbleToHex(static_cast<u8>(tmp >> 4));
         *dest++ = NibbleToHex(tmp);
     }
 }
@@ -370,7 +370,7 @@ static void MemToGdbHex(u8* dest, const u8* src, std::size_t len) {
  */
 static void GdbHexToMem(u8* dest, const u8* src, std::size_t len) {
     while (len-- > 0) {
-        *dest++ = (HexCharToValue(src[0]) << 4) | HexCharToValue(src[1]);
+        *dest++ = static_cast<u8>((HexCharToValue(src[0]) << 4) | HexCharToValue(src[1]));
         src += 2;
     }
 }
@@ -602,22 +602,22 @@ static void SendReply(const char* reply) {
 
     memcpy(command_buffer + 1, reply, command_length);
 
-    u8 checksum = CalculateChecksum(command_buffer, command_length + 1);
+    const u8 checksum = CalculateChecksum(command_buffer, command_length + 1);
     command_buffer[0] = GDB_STUB_START;
     command_buffer[command_length + 1] = GDB_STUB_END;
-    command_buffer[command_length + 2] = NibbleToHex(checksum >> 4);
+    command_buffer[command_length + 2] = NibbleToHex(static_cast<u8>(checksum >> 4));
     command_buffer[command_length + 3] = NibbleToHex(checksum);
 
     u8* ptr = command_buffer;
     u32 left = command_length + 4;
     while (left > 0) {
-        int sent_size = send(gdbserver_socket, reinterpret_cast<char*>(ptr), left, 0);
+        const auto sent_size = send(gdbserver_socket, reinterpret_cast<char*>(ptr), left, 0);
         if (sent_size < 0) {
             LOG_ERROR(Debug_GDBStub, "gdb: send failed");
             return Shutdown();
         }
 
-        left -= sent_size;
+        left -= static_cast<u32>(sent_size);
         ptr += sent_size;
     }
 }
@@ -777,10 +777,10 @@ static void ReadCommand() {
         command_buffer[command_length++] = c;
     }
 
-    u8 checksum_received = HexCharToValue(ReadByte()) << 4;
-    checksum_received |= HexCharToValue(ReadByte());
+    auto checksum_received = static_cast<u32>(HexCharToValue(ReadByte()) << 4);
+    checksum_received |= static_cast<u32>(HexCharToValue(ReadByte()));
 
-    u8 checksum_calculated = CalculateChecksum(command_buffer, command_length);
+    const u32 checksum_calculated = CalculateChecksum(command_buffer, command_length);
 
     if (checksum_received != checksum_calculated) {
         LOG_ERROR(Debug_GDBStub,
diff --git a/src/core/hle/ipc_helpers.h b/src/core/hle/ipc_helpers.h
index 1b503331f..1c354037d 100644
--- a/src/core/hle/ipc_helpers.h
+++ b/src/core/hle/ipc_helpers.h
@@ -38,10 +38,11 @@ public:
     explicit RequestHelperBase(Kernel::HLERequestContext& context)
         : context(&context), cmdbuf(context.CommandBuffer()) {}
 
-    void Skip(unsigned size_in_words, bool set_to_null) {
-        if (set_to_null)
+    void Skip(u32 size_in_words, bool set_to_null) {
+        if (set_to_null) {
             memset(cmdbuf + index, 0, size_in_words * sizeof(u32));
-        index += size_in_words;
+        }
+        index += static_cast<ptrdiff_t>(size_in_words);
     }
 
     /**
@@ -49,15 +50,15 @@ public:
      */
     void AlignWithPadding() {
         if (index & 3) {
-            Skip(4 - (index & 3), true);
+            Skip(static_cast<u32>(4 - (index & 3)), true);
         }
     }
 
-    unsigned GetCurrentOffset() const {
-        return static_cast<unsigned>(index);
+    u32 GetCurrentOffset() const {
+        return static_cast<u32>(index);
     }
 
-    void SetCurrentOffset(unsigned offset) {
+    void SetCurrentOffset(u32 offset) {
         index = static_cast<ptrdiff_t>(offset);
     }
 };
@@ -89,7 +90,7 @@ public:
 
         // The entire size of the raw data section in u32 units, including the 16 bytes of mandatory
         // padding.
-        u32 raw_data_size = sizeof(IPC::DataPayloadHeader) / 4 + 4 + normal_params_size;
+        u64 raw_data_size = sizeof(IPC::DataPayloadHeader) / 4 + 4 + normal_params_size;
 
         u32 num_handles_to_move{};
         u32 num_domain_objects{};
@@ -105,7 +106,7 @@ public:
             raw_data_size += sizeof(DomainMessageHeader) / 4 + num_domain_objects;
         }
 
-        header.data_size.Assign(raw_data_size);
+        header.data_size.Assign(static_cast<u32>(raw_data_size));
         if (num_handles_to_copy || num_handles_to_move) {
             header.enable_handle_descriptor.Assign(1);
         }
diff --git a/src/core/hle/kernel/handle_table.cpp b/src/core/hle/kernel/handle_table.cpp
index fb30b6f8b..3e745c18b 100644
--- a/src/core/hle/kernel/handle_table.cpp
+++ b/src/core/hle/kernel/handle_table.cpp
@@ -118,7 +118,7 @@ std::shared_ptr<Object> HandleTable::GetGeneric(Handle handle) const {
 
 void HandleTable::Clear() {
     for (u16 i = 0; i < table_size; ++i) {
-        generations[i] = i + 1;
+        generations[i] = static_cast<u16>(i + 1);
         objects[i] = nullptr;
     }
     next_free_slot = 0;
diff --git a/src/core/hle/kernel/scheduler.cpp b/src/core/hle/kernel/scheduler.cpp
index 5cbd3b912..6b7db5372 100644
--- a/src/core/hle/kernel/scheduler.cpp
+++ b/src/core/hle/kernel/scheduler.cpp
@@ -72,7 +72,7 @@ u32 GlobalScheduler::SelectThreads() {
         if (top_thread != nullptr) {
             // TODO(Blinkhawk): Implement Thread Pinning
         } else {
-            idle_cores |= (1ul << core);
+            idle_cores |= (1U << core);
         }
         top_threads[core] = top_thread;
     }
@@ -126,7 +126,7 @@ u32 GlobalScheduler::SelectThreads() {
             top_threads[core_id] = suggested;
         }
 
-        idle_cores &= ~(1ul << core_id);
+        idle_cores &= ~(1U << core_id);
     }
     u32 cores_needing_context_switch{};
     for (u32 core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
@@ -134,7 +134,7 @@ u32 GlobalScheduler::SelectThreads() {
         ASSERT(top_threads[core] == nullptr ||
                static_cast<u32>(top_threads[core]->GetProcessorID()) == core);
         if (update_thread(top_threads[core], sched)) {
-            cores_needing_context_switch |= (1ul << core);
+            cores_needing_context_switch |= (1U << core);
         }
     }
     return cores_needing_context_switch;
@@ -364,7 +364,7 @@ void GlobalScheduler::EnableInterruptAndSchedule(u32 cores_pending_reschedule,
         } else {
             must_context_switch = true;
         }
-        cores_pending_reschedule &= ~(1ul << core);
+        cores_pending_reschedule &= ~(1U << core);
     }
     if (must_context_switch) {
         auto& core_scheduler = kernel.CurrentScheduler();
@@ -767,7 +767,7 @@ void Scheduler::SwitchToCurrent() {
                     current_thread->context_guard.unlock();
                     break;
                 }
-                if (current_thread->GetProcessorID() != core_id) {
+                if (static_cast<u32>(current_thread->GetProcessorID()) != core_id) {
                     current_thread->context_guard.unlock();
                     break;
                 }
diff --git a/src/core/hle/service/bcat/backend/boxcat.cpp b/src/core/hle/service/bcat/backend/boxcat.cpp
index ca021a99f..589e288df 100644
--- a/src/core/hle/service/bcat/backend/boxcat.cpp
+++ b/src/core/hle/service/bcat/backend/boxcat.cpp
@@ -196,7 +196,9 @@ private:
                                     const std::string& content_type_name) {
         if (client == nullptr) {
             client = std::make_unique<httplib::SSLClient>(BOXCAT_HOSTNAME, PORT);
-            client->set_timeout_sec(timeout_seconds);
+            client->set_connection_timeout(timeout_seconds);
+            client->set_read_timeout(timeout_seconds);
+            client->set_write_timeout(timeout_seconds);
         }
 
         httplib::Headers headers{
@@ -255,7 +257,7 @@ private:
         return out;
     }
 
-    std::unique_ptr<httplib::Client> client;
+    std::unique_ptr<httplib::SSLClient> client;
     std::string path;
     u64 title_id;
     u64 build_id;
@@ -443,7 +445,9 @@ std::optional<std::vector<u8>> Boxcat::GetLaunchParameter(TitleIDVersion title)
 Boxcat::StatusResult Boxcat::GetStatus(std::optional<std::string>& global,
                                        std::map<std::string, EventStatus>& games) {
     httplib::SSLClient client{BOXCAT_HOSTNAME, static_cast<int>(PORT)};
-    client.set_timeout_sec(static_cast<int>(TIMEOUT_SECONDS));
+    client.set_connection_timeout(static_cast<int>(TIMEOUT_SECONDS));
+    client.set_read_timeout(static_cast<int>(TIMEOUT_SECONDS));
+    client.set_write_timeout(static_cast<int>(TIMEOUT_SECONDS));
 
     httplib::Headers headers{
         {std::string("Game-Assets-API-Version"), std::string(BOXCAT_API_VERSION)},
diff --git a/src/core/hle/service/hid/controllers/keyboard.cpp b/src/core/hle/service/hid/controllers/keyboard.cpp
index 0b896d5ad..59b694cd4 100644
--- a/src/core/hle/service/hid/controllers/keyboard.cpp
+++ b/src/core/hle/service/hid/controllers/keyboard.cpp
@@ -42,8 +42,8 @@ void Controller_Keyboard::OnUpdate(const Core::Timing::CoreTiming& core_timing,
     cur_entry.modifier = 0;
     if (Settings::values.keyboard_enabled) {
         for (std::size_t i = 0; i < keyboard_keys.size(); ++i) {
-            cur_entry.key[i / KEYS_PER_BYTE] |=
-                (keyboard_keys[i]->GetStatus() << (i % KEYS_PER_BYTE));
+            auto& entry = cur_entry.key[i / KEYS_PER_BYTE];
+            entry = static_cast<u8>(entry | (keyboard_keys[i]->GetStatus() << (i % KEYS_PER_BYTE)));
         }
 
         for (std::size_t i = 0; i < keyboard_mods.size(); ++i) {
diff --git a/src/core/hle/service/hid/controllers/npad.cpp b/src/core/hle/service/hid/controllers/npad.cpp
index 2de4ed348..e311bc18c 100644
--- a/src/core/hle/service/hid/controllers/npad.cpp
+++ b/src/core/hle/service/hid/controllers/npad.cpp
@@ -269,7 +269,6 @@ void Controller_NPad::RequestPadStateUpdate(u32 npad_id) {
     auto& rstick_entry = npad_pad_states[controller_idx].r_stick;
     const auto& button_state = buttons[controller_idx];
     const auto& analog_state = sticks[controller_idx];
-    const auto& motion_state = motions[controller_idx];
     const auto [stick_l_x_f, stick_l_y_f] =
         analog_state[static_cast<std::size_t>(JoystickId::Joystick_Left)]->GetStatus();
     const auto [stick_r_x_f, stick_r_y_f] =
@@ -391,18 +390,6 @@ void Controller_NPad::OnUpdate(const Core::Timing::CoreTiming& core_timing, u8*
 
         libnx_entry.connection_status.raw = 0;
         libnx_entry.connection_status.IsConnected.Assign(1);
-        auto& full_sixaxis_entry =
-            npad.sixaxis_full.sixaxis[npad.sixaxis_full.common.last_entry_index];
-        auto& handheld_sixaxis_entry =
-            npad.sixaxis_handheld.sixaxis[npad.sixaxis_handheld.common.last_entry_index];
-        auto& dual_left_sixaxis_entry =
-            npad.sixaxis_dual_left.sixaxis[npad.sixaxis_dual_left.common.last_entry_index];
-        auto& dual_right_sixaxis_entry =
-            npad.sixaxis_dual_right.sixaxis[npad.sixaxis_dual_right.common.last_entry_index];
-        auto& left_sixaxis_entry =
-            npad.sixaxis_left.sixaxis[npad.sixaxis_left.common.last_entry_index];
-        auto& right_sixaxis_entry =
-            npad.sixaxis_right.sixaxis[npad.sixaxis_right.common.last_entry_index];
 
         switch (controller_type) {
         case NPadControllerType::None:
@@ -541,18 +528,6 @@ void Controller_NPad::OnMotionUpdate(const Core::Timing::CoreTiming& core_timing
             }
         }
 
-        auto& main_controller =
-            npad.main_controller_states.npad[npad.main_controller_states.common.last_entry_index];
-        auto& handheld_entry =
-            npad.handheld_states.npad[npad.handheld_states.common.last_entry_index];
-        auto& dual_entry = npad.dual_states.npad[npad.dual_states.common.last_entry_index];
-        auto& left_entry = npad.left_joy_states.npad[npad.left_joy_states.common.last_entry_index];
-        auto& right_entry =
-            npad.right_joy_states.npad[npad.right_joy_states.common.last_entry_index];
-        auto& pokeball_entry =
-            npad.pokeball_states.npad[npad.pokeball_states.common.last_entry_index];
-        auto& libnx_entry = npad.libnx.npad[npad.libnx.common.last_entry_index];
-
         auto& full_sixaxis_entry =
             npad.sixaxis_full.sixaxis[npad.sixaxis_full.common.last_entry_index];
         auto& handheld_sixaxis_entry =
diff --git a/src/core/hle/service/hid/hid.cpp b/src/core/hle/service/hid/hid.cpp
index 71dbaba7f..8918946a1 100644
--- a/src/core/hle/service/hid/hid.cpp
+++ b/src/core/hle/service/hid/hid.cpp
@@ -475,7 +475,7 @@ void Hid::StopSixAxisSensor(Kernel::HLERequestContext& ctx) {
 
 void Hid::EnableSixAxisSensorFusion(Kernel::HLERequestContext& ctx) {
     IPC::RequestParser rp{ctx};
-    const auto enable{rp.Pop<bool>()};
+    [[maybe_unused]] const auto enable{rp.Pop<bool>()};
     const auto handle{rp.Pop<u32>()};
     const auto applet_resource_user_id{rp.Pop<u64>()};
 
diff --git a/src/core/hle/service/mii/manager.cpp b/src/core/hle/service/mii/manager.cpp
index 4730070cb..8e433eb41 100644
--- a/src/core/hle/service/mii/manager.cpp
+++ b/src/core/hle/service/mii/manager.cpp
@@ -428,7 +428,7 @@ bool MiiManager::IsFullDatabase() const {
 }
 
 u32 MiiManager::GetCount(SourceFlag source_flag) const {
-    u32 count{};
+    std::size_t count{};
     if ((source_flag & SourceFlag::Database) != SourceFlag::None) {
         // TODO(bunnei): We don't implement the Mii database, but when we do, update this
         count += 0;
@@ -436,7 +436,7 @@ u32 MiiManager::GetCount(SourceFlag source_flag) const {
     if ((source_flag & SourceFlag::Default) != SourceFlag::None) {
         count += DefaultMiiCount;
     }
-    return count;
+    return static_cast<u32>(count);
 }
 
 ResultVal<MiiInfo> MiiManager::UpdateLatest([[maybe_unused]] const MiiInfo& info,
diff --git a/src/core/hle/service/sockets/sockets_translate.cpp b/src/core/hle/service/sockets/sockets_translate.cpp
index 139743e1d..2e626fd86 100644
--- a/src/core/hle/service/sockets/sockets_translate.cpp
+++ b/src/core/hle/service/sockets/sockets_translate.cpp
@@ -89,9 +89,9 @@ Network::Protocol Translate(Type type, Protocol protocol) {
     }
 }
 
-u16 TranslatePollEventsToHost(u16 flags) {
-    u16 result = 0;
-    const auto translate = [&result, &flags](u16 from, u16 to) {
+u16 TranslatePollEventsToHost(u32 flags) {
+    u32 result = 0;
+    const auto translate = [&result, &flags](u32 from, u32 to) {
         if ((flags & from) != 0) {
             flags &= ~from;
             result |= to;
@@ -105,12 +105,12 @@ u16 TranslatePollEventsToHost(u16 flags) {
     translate(POLL_NVAL, Network::POLL_NVAL);
 
     UNIMPLEMENTED_IF_MSG(flags != 0, "Unimplemented flags={}", flags);
-    return result;
+    return static_cast<u16>(result);
 }
 
-u16 TranslatePollEventsToGuest(u16 flags) {
-    u16 result = 0;
-    const auto translate = [&result, &flags](u16 from, u16 to) {
+u16 TranslatePollEventsToGuest(u32 flags) {
+    u32 result = 0;
+    const auto translate = [&result, &flags](u32 from, u32 to) {
         if ((flags & from) != 0) {
             flags &= ~from;
             result |= to;
@@ -125,7 +125,7 @@ u16 TranslatePollEventsToGuest(u16 flags) {
     translate(Network::POLL_NVAL, POLL_NVAL);
 
     UNIMPLEMENTED_IF_MSG(flags != 0, "Unimplemented flags={}", flags);
-    return result;
+    return static_cast<u16>(result);
 }
 
 Network::SockAddrIn Translate(SockAddrIn value) {
diff --git a/src/core/hle/service/sockets/sockets_translate.h b/src/core/hle/service/sockets/sockets_translate.h
index 8ed041e31..e498913d4 100644
--- a/src/core/hle/service/sockets/sockets_translate.h
+++ b/src/core/hle/service/sockets/sockets_translate.h
@@ -31,10 +31,10 @@ Network::Type Translate(Type type);
 Network::Protocol Translate(Type type, Protocol protocol);
 
 /// Translate abstract poll event flags to guest poll event flags
-u16 TranslatePollEventsToHost(u16 flags);
+u16 TranslatePollEventsToHost(u32 flags);
 
 /// Translate guest poll event flags to abstract poll event flags
-u16 TranslatePollEventsToGuest(u16 flags);
+u16 TranslatePollEventsToGuest(u32 flags);
 
 /// Translate guest socket address structure to abstract socket address structure
 Network::SockAddrIn Translate(SockAddrIn value);
diff --git a/src/core/hle/service/time/time_zone_manager.cpp b/src/core/hle/service/time/time_zone_manager.cpp
index 69152d0ac..bdf0439f2 100644
--- a/src/core/hle/service/time/time_zone_manager.cpp
+++ b/src/core/hle/service/time/time_zone_manager.cpp
@@ -820,7 +820,10 @@ static ResultCode ToCalendarTimeImpl(const TimeZoneRule& rules, s64 time, Calend
     const ResultCode result{
         ToCalendarTimeInternal(rules, time, calendar_time, calendar.additiona_info)};
     calendar.time.year = static_cast<s16>(calendar_time.year);
-    calendar.time.month = calendar_time.month + 1; // Internal impl. uses 0-indexed month
+
+    // Internal impl. uses 0-indexed month
+    calendar.time.month = static_cast<s8>(calendar_time.month + 1);
+
     calendar.time.day = calendar_time.day;
     calendar.time.hour = calendar_time.hour;
     calendar.time.minute = calendar_time.minute;
@@ -872,13 +875,15 @@ ResultCode TimeZoneManager::ToPosixTime(const TimeZoneRule& rules,
                                         const CalendarTime& calendar_time, s64& posix_time) const {
     posix_time = 0;
 
-    CalendarTimeInternal internal_time{};
-    internal_time.year = calendar_time.year;
-    internal_time.month = calendar_time.month - 1; // Internal impl. uses 0-indexed month
-    internal_time.day = calendar_time.day;
-    internal_time.hour = calendar_time.hour;
-    internal_time.minute = calendar_time.minute;
-    internal_time.second = calendar_time.second;
+    CalendarTimeInternal internal_time{
+        .year = calendar_time.year,
+        // Internal impl. uses 0-indexed month
+        .month = static_cast<s8>(calendar_time.month - 1),
+        .day = calendar_time.day,
+        .hour = calendar_time.hour,
+        .minute = calendar_time.minute,
+        .second = calendar_time.second,
+    };
 
     s32 hour{internal_time.hour};
     s32 minute{internal_time.minute};
diff --git a/src/core/hle/service/vi/vi.cpp b/src/core/hle/service/vi/vi.cpp
index 480d34725..d380c60fb 100644
--- a/src/core/hle/service/vi/vi.cpp
+++ b/src/core/hle/service/vi/vi.cpp
@@ -159,7 +159,7 @@ public:
         header.data_size = static_cast<u32_le>(write_index - sizeof(Header));
         header.data_offset = sizeof(Header);
         header.objects_size = 4;
-        header.objects_offset = sizeof(Header) + header.data_size;
+        header.objects_offset = static_cast<u32>(sizeof(Header) + header.data_size);
         std::memcpy(buffer.data(), &header, sizeof(Header));
 
         return buffer;
diff --git a/src/core/loader/kip.cpp b/src/core/loader/kip.cpp
index 5981bcd21..2a905d3e4 100644
--- a/src/core/loader/kip.cpp
+++ b/src/core/loader/kip.cpp
@@ -16,7 +16,7 @@ namespace Loader {
 
 namespace {
 constexpr u32 PageAlignSize(u32 size) {
-    return (size + Core::Memory::PAGE_MASK) & ~Core::Memory::PAGE_MASK;
+    return static_cast<u32>((size + Core::Memory::PAGE_MASK) & ~Core::Memory::PAGE_MASK);
 }
 } // Anonymous namespace
 
diff --git a/src/core/loader/nro.cpp b/src/core/loader/nro.cpp
index 9fb5eddad..5f4b3104b 100644
--- a/src/core/loader/nro.cpp
+++ b/src/core/loader/nro.cpp
@@ -127,7 +127,7 @@ FileType AppLoader_NRO::IdentifyType(const FileSys::VirtualFile& file) {
 }
 
 static constexpr u32 PageAlignSize(u32 size) {
-    return (size + Core::Memory::PAGE_MASK) & ~Core::Memory::PAGE_MASK;
+    return static_cast<u32>((size + Core::Memory::PAGE_MASK) & ~Core::Memory::PAGE_MASK);
 }
 
 static bool LoadNroImpl(Kernel::Process& process, const std::vector<u8>& data,
diff --git a/src/core/loader/nso.cpp b/src/core/loader/nso.cpp
index 1e70f6e11..497f438a1 100644
--- a/src/core/loader/nso.cpp
+++ b/src/core/loader/nso.cpp
@@ -47,7 +47,7 @@ std::vector<u8> DecompressSegment(const std::vector<u8>& compressed_data,
 }
 
 constexpr u32 PageAlignSize(u32 size) {
-    return (size + Core::Memory::PAGE_MASK) & ~Core::Memory::PAGE_MASK;
+    return static_cast<u32>((size + Core::Memory::PAGE_MASK) & ~Core::Memory::PAGE_MASK);
 }
 } // Anonymous namespace
 
diff --git a/src/core/loader/nso.h b/src/core/loader/nso.h
index 4bd47787d..d331096ae 100644
--- a/src/core/loader/nso.h
+++ b/src/core/loader/nso.h
@@ -59,7 +59,7 @@ struct NSOHeader {
 static_assert(sizeof(NSOHeader) == 0x100, "NSOHeader has incorrect size.");
 static_assert(std::is_trivially_copyable_v<NSOHeader>, "NSOHeader must be trivially copyable.");
 
-constexpr u64 NSO_ARGUMENT_DATA_ALLOCATION_SIZE = 0x9000;
+constexpr u32 NSO_ARGUMENT_DATA_ALLOCATION_SIZE = 0x9000;
 
 struct NSOArgumentHeader {
     u32_le allocated_size;
diff --git a/src/core/memory.cpp b/src/core/memory.cpp
index c3f4829d7..b88aa5c40 100644
--- a/src/core/memory.cpp
+++ b/src/core/memory.cpp
@@ -120,9 +120,9 @@ struct Memory::Impl {
         if ((addr & 1) == 0) {
             return Read<u16_le>(addr);
         } else {
-            const u8 a{Read<u8>(addr)};
-            const u8 b{Read<u8>(addr + sizeof(u8))};
-            return (static_cast<u16>(b) << 8) | a;
+            const u32 a{Read<u8>(addr)};
+            const u32 b{Read<u8>(addr + sizeof(u8))};
+            return static_cast<u16>((b << 8) | a);
         }
     }
 
@@ -130,9 +130,9 @@ struct Memory::Impl {
         if ((addr & 3) == 0) {
             return Read<u32_le>(addr);
         } else {
-            const u16 a{Read16(addr)};
-            const u16 b{Read16(addr + sizeof(u16))};
-            return (static_cast<u32>(b) << 16) | a;
+            const u32 a{Read16(addr)};
+            const u32 b{Read16(addr + sizeof(u16))};
+            return (b << 16) | a;
         }
     }
 
diff --git a/src/core/memory/cheat_engine.cpp b/src/core/memory/cheat_engine.cpp
index 29284a42d..2dd0eb0f8 100644
--- a/src/core/memory/cheat_engine.cpp
+++ b/src/core/memory/cheat_engine.cpp
@@ -153,8 +153,9 @@ std::vector<CheatEntry> TextCheatParser::Parse(std::string_view data) const {
                 return {};
             }
 
+            const auto value = static_cast<u32>(std::stoul(hex, nullptr, 0x10));
             out[*current_entry].definition.opcodes[out[*current_entry].definition.num_opcodes++] =
-                std::stoul(hex, nullptr, 0x10);
+                value;
 
             i += 8;
         } else {
diff --git a/src/core/network/network.cpp b/src/core/network/network.cpp
index 56d173b5e..4b3bb4366 100644
--- a/src/core/network/network.cpp
+++ b/src/core/network/network.cpp
@@ -238,14 +238,14 @@ SockAddrIn TranslateToSockAddrIn(sockaddr input_) {
     return result;
 }
 
-u16 TranslatePollEvents(u16 events) {
-    u16 result = 0;
+u16 TranslatePollEvents(u32 events) {
+    u32 result = 0;
 
-    if (events & POLL_IN) {
+    if ((events & POLL_IN) != 0) {
         events &= ~POLL_IN;
         result |= POLLIN;
     }
-    if (events & POLL_PRI) {
+    if ((events & POLL_PRI) != 0) {
         events &= ~POLL_PRI;
 #ifdef _WIN32
         LOG_WARNING(Service, "Winsock doesn't support POLLPRI");
@@ -253,20 +253,20 @@ u16 TranslatePollEvents(u16 events) {
         result |= POLL_PRI;
 #endif
     }
-    if (events & POLL_OUT) {
+    if ((events & POLL_OUT) != 0) {
         events &= ~POLL_OUT;
         result |= POLLOUT;
     }
 
     UNIMPLEMENTED_IF_MSG(events != 0, "Unhandled guest events=0x{:x}", events);
 
-    return result;
+    return static_cast<u16>(result);
 }
 
-u16 TranslatePollRevents(u16 revents) {
-    u16 result = 0;
-    const auto translate = [&result, &revents](int host, unsigned guest) {
-        if (revents & host) {
+u16 TranslatePollRevents(u32 revents) {
+    u32 result = 0;
+    const auto translate = [&result, &revents](u32 host, u32 guest) {
+        if ((revents & host) != 0) {
             revents &= ~host;
             result |= guest;
         }
@@ -280,7 +280,7 @@ u16 TranslatePollRevents(u16 revents) {
 
     UNIMPLEMENTED_IF_MSG(revents != 0, "Unhandled host revents=0x{:x}", revents);
 
-    return result;
+    return static_cast<u16>(result);
 }
 
 template <typename T>
@@ -350,7 +350,7 @@ std::pair<s32, Errno> Poll(std::vector<PollFD>& pollfds, s32 timeout) {
     }
 
     for (size_t i = 0; i < num; ++i) {
-        pollfds[i].revents = TranslatePollRevents(host_pollfds[i].revents);
+        pollfds[i].revents = TranslatePollRevents(static_cast<u32>(host_pollfds[i].revents));
     }
 
     if (result > 0) {
@@ -408,7 +408,7 @@ std::pair<Socket::AcceptResult, Errno> Socket::Accept() {
 
 Errno Socket::Connect(SockAddrIn addr_in) {
     const sockaddr host_addr_in = TranslateFromSockAddrIn(addr_in);
-    if (connect(fd, &host_addr_in, sizeof(host_addr_in)) != INVALID_SOCKET) {
+    if (connect(fd, &host_addr_in, sizeof(host_addr_in)) != SOCKET_ERROR) {
         return Errno::SUCCESS;
     }
 
@@ -503,10 +503,10 @@ std::pair<s32, Errno> Socket::Recv(int flags, std::vector<u8>& message) {
     ASSERT(flags == 0);
     ASSERT(message.size() < static_cast<size_t>(std::numeric_limits<int>::max()));
 
-    const int result =
+    const auto result =
         recv(fd, reinterpret_cast<char*>(message.data()), static_cast<int>(message.size()), 0);
     if (result != SOCKET_ERROR) {
-        return {result, Errno::SUCCESS};
+        return {static_cast<s32>(result), Errno::SUCCESS};
     }
 
     switch (const int ec = LastError()) {
@@ -531,14 +531,14 @@ std::pair<s32, Errno> Socket::RecvFrom(int flags, std::vector<u8>& message, Sock
     socklen_t* const p_addrlen = addr ? &addrlen : nullptr;
     sockaddr* const p_addr_in = addr ? &addr_in : nullptr;
 
-    const int result = recvfrom(fd, reinterpret_cast<char*>(message.data()),
-                                static_cast<int>(message.size()), 0, p_addr_in, p_addrlen);
+    const auto result = recvfrom(fd, reinterpret_cast<char*>(message.data()),
+                                 static_cast<int>(message.size()), 0, p_addr_in, p_addrlen);
     if (result != SOCKET_ERROR) {
         if (addr) {
             ASSERT(addrlen == sizeof(addr_in));
             *addr = TranslateToSockAddrIn(addr_in);
         }
-        return {result, Errno::SUCCESS};
+        return {static_cast<s32>(result), Errno::SUCCESS};
     }
 
     switch (const int ec = LastError()) {
@@ -558,10 +558,10 @@ std::pair<s32, Errno> Socket::Send(const std::vector<u8>& message, int flags) {
     ASSERT(message.size() < static_cast<size_t>(std::numeric_limits<int>::max()));
     ASSERT(flags == 0);
 
-    const int result = send(fd, reinterpret_cast<const char*>(message.data()),
-                            static_cast<int>(message.size()), 0);
+    const auto result = send(fd, reinterpret_cast<const char*>(message.data()),
+                             static_cast<int>(message.size()), 0);
     if (result != SOCKET_ERROR) {
-        return {result, Errno::SUCCESS};
+        return {static_cast<s32>(result), Errno::SUCCESS};
     }
 
     const int ec = LastError();
@@ -591,10 +591,10 @@ std::pair<s32, Errno> Socket::SendTo(u32 flags, const std::vector<u8>& message,
         to = &host_addr_in;
     }
 
-    const int result = sendto(fd, reinterpret_cast<const char*>(message.data()),
-                              static_cast<int>(message.size()), 0, to, tolen);
+    const auto result = sendto(fd, reinterpret_cast<const char*>(message.data()),
+                               static_cast<int>(message.size()), 0, to, tolen);
     if (result != SOCKET_ERROR) {
-        return {result, Errno::SUCCESS};
+        return {static_cast<s32>(result), Errno::SUCCESS};
     }
 
     const int ec = LastError();