From 87462165b5243a96ddf4e4d1725e16e4aac3af5c Mon Sep 17 00:00:00 2001
From: Turo Lamminen <turotl@gmail.com>
Date: Wed, 13 Dec 2017 11:28:22 +0200
Subject: [PATCH] Fix bad pointer arithmetic in aiVector2

Trying to reference 'y' via pointer arithmetic on 'x' is UB
---
 include/assimp/vector2.inl | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/include/assimp/vector2.inl b/include/assimp/vector2.inl
index 5ce13eece..fe3059ad5 100644
--- a/include/assimp/vector2.inl
+++ b/include/assimp/vector2.inl
@@ -114,13 +114,29 @@ const aiVector2t<TReal>& aiVector2t<TReal>::operator /= (TReal f) {
 // ------------------------------------------------------------------------------------------------
 template <typename TReal>
 TReal aiVector2t<TReal>::operator[](unsigned int i) const {
-    return *(&x + i);
+    switch (i) {
+        case 0:
+            return x;
+        case 1:
+            return y;
+        default:
+            break;
+    }
+    return x;
 }
 
 // ------------------------------------------------------------------------------------------------
 template <typename TReal>
 TReal& aiVector2t<TReal>::operator[](unsigned int i) {
-    return *(&x + i);
+    switch (i) {
+        case 0:
+            return x;
+        case 1:
+            return y;
+        default:
+            break;
+    }
+    return x;
 }
 
 // ------------------------------------------------------------------------------------------------