From 61cf9f4e723bd9522757931706b208a1357c30ba Mon Sep 17 00:00:00 2001
From: Davide Italiano <ditaliano@apple.com>
Date: Tue, 14 Jul 2020 18:51:56 -0700
Subject: [PATCH] [ObjectFilePECOFF] Try to avoid unaligned access.

Fixes an UBSAN error.
---
 lldb/source/Plugins/ObjectFile/PECOFF/ObjectFilePECOFF.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lldb/source/Plugins/ObjectFile/PECOFF/ObjectFilePECOFF.cpp b/lldb/source/Plugins/ObjectFile/PECOFF/ObjectFilePECOFF.cpp
index 39808cdec790..d606b49130c4 100644
--- a/lldb/source/Plugins/ObjectFile/PECOFF/ObjectFilePECOFF.cpp
+++ b/lldb/source/Plugins/ObjectFile/PECOFF/ObjectFilePECOFF.cpp
@@ -656,7 +656,7 @@ Symtab *ObjectFilePECOFF::GetSymtab() {
           // because it is used as offset 0 to encode a NULL string.
           uint32_t *strtab_data_start = const_cast<uint32_t *>(
               reinterpret_cast<const uint32_t *>(strtab_data.GetDataStart()));
-          strtab_data_start[0] = 0;
+          ::memset(&strtab_data_start[0], 0, sizeof(uint32_t));
 
           offset = 0;
           std::string symbol_name;