From 82e16cbb586d066d5ac8bb33bd841dcca0fa7160 Mon Sep 17 00:00:00 2001
From: ragnarok-clanker <ragnarok-clanker>
Date: Sat, 7 Nov 2026 02:23:45 +0000
Subject: [PATCH] Decompile fn_05116
 (?ReadAuxiliaryIdentifier@?A0xaee75dd0@@YA_KPBXI@Z)

Batch #13811 by eAthena: 0 byte-identical, 1 confirmed by peer review.

- fn_05116 ?ReadAuxiliaryIdentifier@?A0xaee75dd0@@YA_KPBXI@Z: logic confirmed by peer review

Peer-reviewed-by: Yommy, KWDev, SapitoSucio
Accepted without human review: peers confirmed the logic ("same" ahead by at least 3, with 70% of the votes).
---
 Source/Archive/GPak.cpp | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/Source/Archive/GPak.cpp b/Source/Archive/GPak.cpp
index 241f2dc7b..d1df57faa 100644
--- a/Source/Archive/GPak.cpp
+++ b/Source/Archive/GPak.cpp
@@ -99,6 +99,7 @@ namespace {
     /* 0000 */ std::uint8_t version;
     /* 0001 */ std::uint8_t unknown_0001[3];
     /* 0004 */ std::uint64_t identifier;
+    /* 000C */ std::uint32_t unknown_000C;
   };
 
 #pragma pack(pop)
@@ -123,7 +124,7 @@ namespace {
   static_assert(sizeof(PakEntryFileV3) == 21);
   static_assert(offsetof(PakEntryFileV3, flags) == 12);
   static_assert(offsetof(PakEntryFileV3, dataOffset) == 13);
-  static_assert(sizeof(PakAuxiliaryFile) == 12);
+  static_assert(sizeof(PakAuxiliaryFile) == 16);
   static_assert(offsetof(PakAuxiliaryFile, identifier) == 4);
 
   // INLINED
@@ -137,10 +138,9 @@ namespace {
   // FUNCTION: fn_05116
   std::uint64_t ReadAuxiliaryIdentifier(const void* data, std::size_t size) {
     if (size != 0) {
-      const auto* bytes = static_cast<const std::uint8_t*>(data);
-      if (bytes[0] <= 1) {
-        PakAuxiliaryFile header;
-        std::memcpy(&header, data, sizeof(header));
+      PakAuxiliaryFile header;
+      std::memcpy(&header, data, sizeof(header));
+      if (header.version <= 1) {
         return header.identifier;
       }
     }