From 865d44abe3877eadaec056b9c85b386ffed743ae Mon Sep 17 00:00:00 2001
From: Adrian Perez <amperez@google.com>
Date: Wed, 11 Oct 2023 16:11:12 -0700
Subject: [PATCH] Elide unaligned reads in header parse

---
 src/tinyusdz.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/tinyusdz.cc b/src/tinyusdz.cc
index c34f23fdf..fdc3fd480 100644
--- a/src/tinyusdz.cc
+++ b/src/tinyusdz.cc
@@ -341,8 +341,8 @@ bool ParseUSDZHeader(const uint8_t *addr, const size_t length,
 
     uint16_t compr_method = *reinterpret_cast<uint16_t *>(&local_header[0] + 8);
     // uint32_t compr_bytes = *reinterpret_cast<uint32_t*>(&local_header[0]+18);
-    uint32_t uncompr_bytes =
-        *reinterpret_cast<uint32_t *>(&local_header[0] + 22);
+    uint32_t uncompr_bytes;
+    memcpy(&uncompr_bytes, &local_header[22], sizeof(uncompr_bytes));
 
     // USDZ only supports uncompressed ZIP
     if (compr_method != 0) {