core: Make variable shadowing a compile-time error

Now that we have most of core free of shadowing, we can enable the
warning as an error to catch anything that may be remaining and also
eliminate this class of logic bug entirely.

16 files changed, 33 insertions, 32 deletions

diff --git a/src/core/hle/kernel/global_scheduler_context.cpp b/src/core/hle/kernel/global_scheduler_context.cpp
index 7c87cbada..4f4e338e3 100644
--- a/src/core/hle/kernel/global_scheduler_context.cpp
+++ b/src/core/hle/kernel/global_scheduler_context.cpp
@@ -12,8 +12,8 @@
 
 namespace Kernel {
 
-GlobalSchedulerContext::GlobalSchedulerContext(KernelCore& kernel)
-    : kernel{kernel}, scheduler_lock{kernel} {}
+GlobalSchedulerContext::GlobalSchedulerContext(KernelCore& kernel_)
+    : kernel{kernel_}, scheduler_lock{kernel_} {}
 
 GlobalSchedulerContext::~GlobalSchedulerContext() = default;
 
diff --git a/src/core/hle/kernel/global_scheduler_context.h b/src/core/hle/kernel/global_scheduler_context.h
index ba8b67fd1..6f44b534f 100644
--- a/src/core/hle/kernel/global_scheduler_context.h
+++ b/src/core/hle/kernel/global_scheduler_context.h
@@ -34,7 +34,7 @@ class GlobalSchedulerContext final {
 public:
     using LockType = KAbstractSchedulerLock<KScheduler>;
 
-    explicit GlobalSchedulerContext(KernelCore& kernel);
+    explicit GlobalSchedulerContext(KernelCore& kernel_);
     ~GlobalSchedulerContext();
 
     /// Adds a new thread to the scheduler
diff --git a/src/core/hle/kernel/k_light_condition_variable.h b/src/core/hle/kernel/k_light_condition_variable.h
index 362d0db28..ca2e539a7 100644
--- a/src/core/hle/kernel/k_light_condition_variable.h
+++ b/src/core/hle/kernel/k_light_condition_variable.h
@@ -18,7 +18,8 @@ class KernelCore;
 
 class KLightConditionVariable {
 public:
-    explicit KLightConditionVariable(KernelCore& kernel) : thread_queue(kernel), kernel(kernel) {}
+    explicit KLightConditionVariable(KernelCore& kernel_)
+        : thread_queue(kernel_), kernel(kernel_) {}
 
     void Wait(KLightLock* lock, s64 timeout = -1) {
         WaitImpl(lock, timeout);
diff --git a/src/core/hle/kernel/k_linked_list.h b/src/core/hle/kernel/k_linked_list.h
index 540e518cd..6adfe1e34 100644
--- a/src/core/hle/kernel/k_linked_list.h
+++ b/src/core/hle/kernel/k_linked_list.h
@@ -201,10 +201,10 @@ public:
     }
 
     iterator insert(const_iterator pos, reference ref) {
-        KLinkedListNode* node = KLinkedListNode::Allocate(kernel);
-        ASSERT(node != nullptr);
-        node->Initialize(std::addressof(ref));
-        return iterator(BaseList::insert(pos.m_base_it, *node));
+        KLinkedListNode* new_node = KLinkedListNode::Allocate(kernel);
+        ASSERT(new_node != nullptr);
+        new_node->Initialize(std::addressof(ref));
+        return iterator(BaseList::insert(pos.m_base_it, *new_node));
     }
 
     void push_back(reference ref) {
diff --git a/src/core/hle/kernel/k_memory_block_manager.cpp b/src/core/hle/kernel/k_memory_block_manager.cpp
index 44bfeb0d5..fc7033564 100644
--- a/src/core/hle/kernel/k_memory_block_manager.cpp
+++ b/src/core/hle/kernel/k_memory_block_manager.cpp
@@ -7,8 +7,8 @@
 
 namespace Kernel {
 
-KMemoryBlockManager::KMemoryBlockManager(VAddr start_addr, VAddr end_addr)
-    : start_addr{start_addr}, end_addr{end_addr} {
+KMemoryBlockManager::KMemoryBlockManager(VAddr start_addr_, VAddr end_addr_)
+    : start_addr{start_addr_}, end_addr{end_addr_} {
     const u64 num_pages{(end_addr - start_addr) / PageSize};
     memory_block_tree.emplace_back(start_addr, num_pages, KMemoryState::Free,
                                    KMemoryPermission::None, KMemoryAttribute::None);
diff --git a/src/core/hle/kernel/k_memory_block_manager.h b/src/core/hle/kernel/k_memory_block_manager.h
index e11cc70c8..d222da919 100644
--- a/src/core/hle/kernel/k_memory_block_manager.h
+++ b/src/core/hle/kernel/k_memory_block_manager.h
@@ -19,7 +19,7 @@ public:
     using const_iterator = MemoryBlockTree::const_iterator;
 
 public:
-    KMemoryBlockManager(VAddr start_addr, VAddr end_addr);
+    KMemoryBlockManager(VAddr start_addr_, VAddr end_addr_);
 
     iterator end() {
         return memory_block_tree.end();
diff --git a/src/core/hle/kernel/k_page_linked_list.h b/src/core/hle/kernel/k_page_linked_list.h
index 64024d01f..dfdac5321 100644
--- a/src/core/hle/kernel/k_page_linked_list.h
+++ b/src/core/hle/kernel/k_page_linked_list.h
@@ -17,7 +17,7 @@ class KPageLinkedList final {
 public:
     class Node final {
     public:
-        constexpr Node(u64 addr, std::size_t num_pages) : addr{addr}, num_pages{num_pages} {}
+        constexpr Node(u64 addr_, std::size_t num_pages_) : addr{addr_}, num_pages{num_pages_} {}
 
         constexpr u64 GetAddress() const {
             return addr;
diff --git a/src/core/hle/kernel/k_page_table.cpp b/src/core/hle/kernel/k_page_table.cpp
index d4ce98ee3..27dbf0ebc 100644
--- a/src/core/hle/kernel/k_page_table.cpp
+++ b/src/core/hle/kernel/k_page_table.cpp
@@ -58,7 +58,7 @@ constexpr std::size_t GetSizeInRange(const KMemoryInfo& info, VAddr start, VAddr
 
 } // namespace
 
-KPageTable::KPageTable(Core::System& system) : system{system} {}
+KPageTable::KPageTable(Core::System& system_) : system{system_} {}
 
 ResultCode KPageTable::InitializeForProcess(FileSys::ProgramAddressSpaceType as_type,
                                             bool enable_aslr, VAddr code_addr,
@@ -906,8 +906,8 @@ ResultCode KPageTable::LockForDeviceAddressSpace(VAddr addr, std::size_t size) {
 
     block_manager->UpdateLock(
         addr, size / PageSize,
-        [](KMemoryBlockManager::iterator block, KMemoryPermission perm) {
-            block->ShareToDevice(perm);
+        [](KMemoryBlockManager::iterator block, KMemoryPermission permission) {
+            block->ShareToDevice(permission);
         },
         perm);
 
@@ -929,8 +929,8 @@ ResultCode KPageTable::UnlockForDeviceAddressSpace(VAddr addr, std::size_t size)
 
     block_manager->UpdateLock(
         addr, size / PageSize,
-        [](KMemoryBlockManager::iterator block, KMemoryPermission perm) {
-            block->UnshareToDevice(perm);
+        [](KMemoryBlockManager::iterator block, KMemoryPermission permission) {
+            block->UnshareToDevice(permission);
         },
         perm);
 
diff --git a/src/core/hle/kernel/k_page_table.h b/src/core/hle/kernel/k_page_table.h
index 8c2cc03eb..770c4841c 100644
--- a/src/core/hle/kernel/k_page_table.h
+++ b/src/core/hle/kernel/k_page_table.h
@@ -24,7 +24,7 @@ class KMemoryBlockManager;
 
 class KPageTable final : NonCopyable {
 public:
-    explicit KPageTable(Core::System& system);
+    explicit KPageTable(Core::System& system_);
 
     ResultCode InitializeForProcess(FileSys::ProgramAddressSpaceType as_type, bool enable_aslr,
                                     VAddr code_addr, std::size_t code_size,
diff --git a/src/core/hle/kernel/k_scheduler.cpp b/src/core/hle/kernel/k_scheduler.cpp
index e256e9415..2f82fbcd6 100644
--- a/src/core/hle/kernel/k_scheduler.cpp
+++ b/src/core/hle/kernel/k_scheduler.cpp
@@ -607,7 +607,7 @@ void KScheduler::YieldToAnyThread(KernelCore& kernel) {
     }
 }
 
-KScheduler::KScheduler(Core::System& system, s32 core_id) : system(system), core_id(core_id) {
+KScheduler::KScheduler(Core::System& system_, s32 core_id_) : system{system_}, core_id{core_id_} {
     switch_fiber = std::make_shared<Common::Fiber>(OnSwitch, this);
     state.needs_scheduling.store(true);
     state.interrupt_task_thread_runnable = false;
diff --git a/src/core/hle/kernel/k_scheduler.h b/src/core/hle/kernel/k_scheduler.h
index 13a2414e6..12cfae919 100644
--- a/src/core/hle/kernel/k_scheduler.h
+++ b/src/core/hle/kernel/k_scheduler.h
@@ -30,7 +30,7 @@ class KThread;
 
 class KScheduler final {
 public:
-    explicit KScheduler(Core::System& system, s32 core_id);
+    explicit KScheduler(Core::System& system_, s32 core_id_);
     ~KScheduler();
 
     /// Reschedules to the next available thread (call after current thread is suspended)
diff --git a/src/core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h b/src/core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h
index b5d405744..a86af56dd 100644
--- a/src/core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h
+++ b/src/core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h
@@ -17,8 +17,8 @@ namespace Kernel {
 
 class [[nodiscard]] KScopedSchedulerLockAndSleep {
 public:
-    explicit KScopedSchedulerLockAndSleep(KernelCore & kernel, KThread * t, s64 timeout)
-        : kernel(kernel), thread(t), timeout_tick(timeout) {
+    explicit KScopedSchedulerLockAndSleep(KernelCore & kernel_, KThread * t, s64 timeout)
+        : kernel(kernel_), thread(t), timeout_tick(timeout) {
         // Lock the scheduler.
         kernel.GlobalSchedulerContext().scheduler_lock.Lock();
     }
diff --git a/src/core/hle/kernel/k_thread_queue.h b/src/core/hle/kernel/k_thread_queue.h
index c52eba249..35d471dc5 100644
--- a/src/core/hle/kernel/k_thread_queue.h
+++ b/src/core/hle/kernel/k_thread_queue.h
@@ -10,7 +10,7 @@ namespace Kernel {
 
 class KThreadQueue {
 public:
-    explicit KThreadQueue(KernelCore& kernel) : kernel{kernel} {}
+    explicit KThreadQueue(KernelCore& kernel_) : kernel{kernel_} {}
 
     bool IsEmpty() const {
         return wait_list.empty();
diff --git a/src/core/hle/kernel/physical_core.cpp b/src/core/hle/kernel/physical_core.cpp
index 7fea45f96..7f02d9471 100644
--- a/src/core/hle/kernel/physical_core.cpp
+++ b/src/core/hle/kernel/physical_core.cpp
@@ -13,10 +13,10 @@
 
 namespace Kernel {
 
-PhysicalCore::PhysicalCore(std::size_t core_index, Core::System& system,
-                           Kernel::KScheduler& scheduler, Core::CPUInterrupts& interrupts)
-    : core_index{core_index}, system{system}, scheduler{scheduler},
-      interrupts{interrupts}, guard{std::make_unique<Common::SpinLock>()} {}
+PhysicalCore::PhysicalCore(std::size_t core_index_, Core::System& system_, KScheduler& scheduler_,
+                           Core::CPUInterrupts& interrupts_)
+    : core_index{core_index_}, system{system_}, scheduler{scheduler_},
+      interrupts{interrupts_}, guard{std::make_unique<Common::SpinLock>()} {}
 
 PhysicalCore::~PhysicalCore() = default;
 
diff --git a/src/core/hle/kernel/physical_core.h b/src/core/hle/kernel/physical_core.h
index f2b0911aa..901f7e3b0 100644
--- a/src/core/hle/kernel/physical_core.h
+++ b/src/core/hle/kernel/physical_core.h
@@ -28,8 +28,8 @@ namespace Kernel {
 
 class PhysicalCore {
 public:
-    PhysicalCore(std::size_t core_index, Core::System& system, Kernel::KScheduler& scheduler,
-                 Core::CPUInterrupts& interrupts);
+    PhysicalCore(std::size_t core_index_, Core::System& system_, KScheduler& scheduler_,
+                 Core::CPUInterrupts& interrupts_);
     ~PhysicalCore();
 
     PhysicalCore(const PhysicalCore&) = delete;
diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp
index 6b445677e..81e23f700 100644
--- a/src/core/hle/kernel/svc.cpp
+++ b/src/core/hle/kernel/svc.cpp
@@ -819,10 +819,10 @@ static ResultCode GetInfo(Core::System& system, u64* result, u64 info_id, Handle
             return RESULT_SUCCESS;
         }
 
-        Handle handle{};
-        R_TRY(handle_table.Add(&handle, resource_limit));
+        Handle resource_handle{};
+        R_TRY(handle_table.Add(&resource_handle, resource_limit));
 
-        *result = handle;
+        *result = resource_handle;
         return RESULT_SUCCESS;
     }