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, 4 insertions, 3 deletions

diff --git a/src/video_core/shader/track.cpp b/src/video_core/shader/track.cpp
index 10739b37d..224943ad9 100644
--- a/src/video_core/shader/track.cpp
+++ b/src/video_core/shader/track.cpp
@@ -27,8 +27,9 @@ std::pair<Node, s64> FindOperation(const NodeBlock& code, s64 cursor,
 
         if (const auto conditional = std::get_if<ConditionalNode>(&*node)) {
             const auto& conditional_code = conditional->GetCode();
-            auto [found, internal_cursor] = FindOperation(
+            auto result = FindOperation(
                 conditional_code, static_cast<s64>(conditional_code.size() - 1), operation_code);
+            auto& found = result.first;
             if (found) {
                 return {std::move(found), cursor};
             }
@@ -186,8 +187,8 @@ std::tuple<Node, u32, u32> ShaderIR::TrackCbuf(Node tracked, const NodeBlock& co
 std::optional<u32> ShaderIR::TrackImmediate(Node tracked, const NodeBlock& code, s64 cursor) const {
     // Reduce the cursor in one to avoid infinite loops when the instruction sets the same register
     // that it uses as operand
-    const auto [found, found_cursor] =
-        TrackRegister(&std::get<GprNode>(*tracked), code, cursor - 1);
+    const auto result = TrackRegister(&std::get<GprNode>(*tracked), code, cursor - 1);
+    const auto& found = result.first;
     if (!found) {
         return {};
     }