From 58e3caa4522155d9e4ab9176f06682284ad9b6aa Mon Sep 17 00:00:00 2001
From: Lucian Grijincu <lucian@fb.com>
Date: Mon, 1 Feb 2016 11:51:51 -0800
Subject: [PATCH] folly: Hash: use loadUnassigned to avoid UB in
 hsieh_hash32_buf (fsanitize=alignment)

Reviewed By: philippv

Differential Revision: D2886152

fb-gh-sync-id: 64c3543db831c72c7f4cf307867223270293066e
---
 folly/Hash.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/folly/Hash.h b/folly/Hash.h
index 7e44fbb2..0def3efc 100644
--- a/folly/Hash.h
+++ b/folly/Hash.h
@@ -25,6 +25,7 @@
 #include <utility>
 
 #include <folly/ApplyTuple.h>
+#include <folly/Bits.h>
 #include <folly/SpookyHashV1.h>
 #include <folly/SpookyHashV2.h>
 
@@ -277,7 +278,7 @@ inline uint64_t fnv64(const std::string& str,
  * Paul Hsieh: http://www.azillionmonkeys.com/qed/hash.html
  */
 
-#define get16bits(d) (*((const uint16_t*) (d)))
+#define get16bits(d) folly::loadUnaligned<uint16_t>(d)
 
 inline uint32_t hsieh_hash32_buf(const void* buf, size_t len) {
   // forcing signed char, since other platforms can use unsigned
-- 
2.34.1