From 58417994203aac551f60a74f9ae31bccc27b5139 Mon Sep 17 00:00:00 2001
From: Billy Laws <blaws05@gmail.com>
Date: Wed, 31 Aug 2022 15:14:30 +0100
Subject: [PATCH] Fix decoding of IOCTLs with padding at the end

---
 .../nvdrv/devices/deserialisation/deserialisation.h         | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/app/src/main/cpp/skyline/services/nvdrv/devices/deserialisation/deserialisation.h b/app/src/main/cpp/skyline/services/nvdrv/devices/deserialisation/deserialisation.h
index 8d5cdb34..a2919606 100644
--- a/app/src/main/cpp/skyline/services/nvdrv/devices/deserialisation/deserialisation.h
+++ b/app/src/main/cpp/skyline/services/nvdrv/devices/deserialisation/deserialisation.h
@@ -55,7 +55,11 @@ namespace skyline::service::nvdrv::deserialisation {
             return make_ref_tuple(buffer.subspan(offset).template cast<RemoveAutoSizeSpan<ArgType>, std::dynamic_extent, true>());
         } else if constexpr (IsPad<ArgType>::value) {
             offset += ArgType::Bytes;
-            return DecodeArgumentsImpl<Desc, ArgTypes...>(buffer, offset, saveSlots);
+            if constexpr(sizeof...(ArgTypes) == 0) {
+                return std::tuple{};
+            } else {
+                return DecodeArgumentsImpl<Desc, ArgTypes...>(buffer, offset, saveSlots);
+            }
         } else if constexpr (IsSave<ArgType>::value) {
             saveSlots[ArgType::SaveSlot] = buffer.subspan(offset).template as<RemoveSave<ArgType>, true>();
             offset += sizeof(RemoveSave<ArgType>);