CMakeLists: Specify -Wextra on linux builds

Allows reporting more cases where logic errors may exist, such as
implicit fallthrough cases, etc.

We currently ignore unused parameters, since we currently have many
cases where this is intentional (virtual interfaces).

While we're at it, we can also tidy up any existing code that causes
warnings. This also uncovered a few bugs as well.

1 files changed, 3 insertions, 2 deletions

diff --git a/src/core/memory/dmnt_cheat_vm.cpp b/src/core/memory/dmnt_cheat_vm.cpp
index 4f4fa5099..5bb26a36f 100644
--- a/src/core/memory/dmnt_cheat_vm.cpp
+++ b/src/core/memory/dmnt_cheat_vm.cpp
@@ -55,7 +55,7 @@ void DmntCheatVm::LogOpcode(const CheatVmOpcode& opcode) {
             fmt::format("Cond Type: {:X}", static_cast<u32>(begin_cond->cond_type)));
         callbacks->CommandLog(fmt::format("Rel Addr:  {:X}", begin_cond->rel_address));
         callbacks->CommandLog(fmt::format("Value:     {:X}", begin_cond->value.bit64));
-    } else if (auto end_cond = std::get_if<EndConditionalOpcode>(&opcode.opcode)) {
+    } else if (std::holds_alternative<EndConditionalOpcode>(opcode.opcode)) {
         callbacks->CommandLog("Opcode: End Conditional");
     } else if (auto ctrl_loop = std::get_if<ControlLoopOpcode>(&opcode.opcode)) {
         if (ctrl_loop->start_loop) {
@@ -399,6 +399,7 @@ bool DmntCheatVm::DecodeNextOpcode(CheatVmOpcode& out) {
         // 8kkkkkkk
         // Just parse the mask.
         begin_keypress_cond.key_mask = first_dword & 0x0FFFFFFF;
+        opcode.opcode = begin_keypress_cond;
     } break;
     case CheatVmOpcodeType::PerformArithmeticRegister: {
         PerformArithmeticRegisterOpcode perform_math_reg{};
@@ -779,7 +780,7 @@ void DmntCheatVm::Execute(const CheatProcessMetadata& metadata) {
             if (!cond_met) {
                 SkipConditionalBlock();
             }
-        } else if (auto end_cond = std::get_if<EndConditionalOpcode>(&cur_opcode.opcode)) {
+        } else if (std::holds_alternative<EndConditionalOpcode>(cur_opcode.opcode)) {
             // Decrement the condition depth.
             // We will assume, graciously, that mismatched conditional block ends are a nop.
             if (condition_depth > 0) {