From: Heejin Ahn <aheejin@gmail.com>
Date: Fri, 8 Feb 2019 04:06:56 +0000 (+0000)
Subject: [WebAssembly] Fix parseImmediate's memory alignment requirement
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=bbd1e17a3399e1ecd48e699a84c5b3f9d0e8b11a;p=llvm

[WebAssembly] Fix parseImmediate's memory alignment requirement

This fixes the current failure in the x86-64 ubsan bot caused by
r353496.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@353499 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/WebAssembly/Disassembler/WebAssemblyDisassembler.cpp b/lib/Target/WebAssembly/Disassembler/WebAssemblyDisassembler.cpp
index 287b2443ddb..23cf60c1877 100644
--- a/lib/Target/WebAssembly/Disassembler/WebAssemblyDisassembler.cpp
+++ b/lib/Target/WebAssembly/Disassembler/WebAssemblyDisassembler.cpp
@@ -108,7 +108,7 @@ template <typename T>
 bool parseImmediate(MCInst &MI, uint64_t &Size, ArrayRef<uint8_t> Bytes) {
   if (Size + sizeof(T) > Bytes.size())
     return false;
-  T Val = support::endian::read<T, support::endianness::little, alignof(T)>(
+  T Val = support::endian::read<T, support::endianness::little, 1>(
       Bytes.data() + Size);
   Size += sizeof(T);
   if (std::is_floating_point<T>::value) {