Index: lib/AsmParser/Parser.cpp
===================================================================
--- lib/AsmParser/Parser.cpp
+++ lib/AsmParser/Parser.cpp
@@ -24,7 +24,7 @@
 
 bool llvm::parseAssemblyInto(MemoryBufferRef F, Module &M, SMDiagnostic &Err) {
   SourceMgr SM;
-  std::unique_ptr<MemoryBuffer> Buf = MemoryBuffer::getMemBuffer(F, false);
+  std::unique_ptr<MemoryBuffer> Buf = MemoryBuffer::getMemBuffer(F);
   SM.AddNewSourceBuffer(std::move(Buf), SMLoc());
 
   return LLParser(F.getBuffer(), SM, Err, &M).Run();
Index: unittests/AsmParser/AsmParserTest.cpp
===================================================================
--- /dev/null
+++ unittests/AsmParser/AsmParserTest.cpp
@@ -0,0 +1,37 @@
+//===- llvm/unittest/AsmParser/AsmParserTest.cpp - asm parser unittests ---===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ADT/StringRef.h"
+#include "llvm/AsmParser/Parser.h"
+#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/Module.h"
+#include "llvm/Support/SourceMgr.h"
+#include "gtest/gtest.h"
+
+using namespace llvm;
+
+namespace {
+
+#ifdef GTEST_HAS_DEATH_TEST
+#ifndef NDEBUG
+
+TEST(AsmParserTest, NonNullTerminatedInput) {
+  LLVMContext &Ctx = getGlobalContext();
+  StringRef Source = "; Empty module \n\1\2";
+  SMDiagnostic Error;
+  std::unique_ptr<Module> Mod;
+  EXPECT_DEATH(Mod = parseAssemblyString(Source.substr(0, Source.size() - 2),
+                                         Error, Ctx),
+               "Buffer is not null terminated!");
+}
+
+#endif
+#endif
+
+} // end anonymous namespace
Index: unittests/AsmParser/CMakeLists.txt
===================================================================
--- /dev/null
+++ unittests/AsmParser/CMakeLists.txt
@@ -0,0 +1,9 @@
+set(LLVM_LINK_COMPONENTS
+  AsmParser
+  Core
+  Support
+  )
+
+add_llvm_unittest(AsmParserTests
+  AsmParserTest.cpp
+  )
Index: unittests/AsmParser/Makefile
===================================================================
--- /dev/null
+++ unittests/AsmParser/Makefile
@@ -0,0 +1,15 @@
+##===- unittests/Assembler/Makefile ------------------------*- Makefile -*-===##
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+
+LEVEL = ../..
+TESTNAME = AsmParser
+LINK_COMPONENTS := AsmParser Core Support
+
+include $(LEVEL)/Makefile.config
+include $(LLVM_SRC_ROOT)/unittests/Makefile.unittest
Index: unittests/CMakeLists.txt
===================================================================
--- unittests/CMakeLists.txt
+++ unittests/CMakeLists.txt
@@ -13,6 +13,7 @@
 
 add_subdirectory(ADT)
 add_subdirectory(Analysis)
+add_subdirectory(AsmParser)
 add_subdirectory(Bitcode)
 add_subdirectory(CodeGen)
 add_subdirectory(DebugInfo)
Index: unittests/Makefile
===================================================================
--- unittests/Makefile
+++ unittests/Makefile
@@ -9,8 +9,9 @@
 
 LEVEL = ..
 
-PARALLEL_DIRS = ADT Analysis Bitcode CodeGen DebugInfo ExecutionEngine IR \
-		LineEditor Linker MC Option ProfileData Support Transforms
+PARALLEL_DIRS = ADT Analysis AsmParser Bitcode CodeGen DebugInfo \
+                ExecutionEngine IR LineEditor Linker MC Option ProfileData \
+                Support Transforms
 
 include $(LEVEL)/Makefile.config
 include $(LLVM_SRC_ROOT)/unittests/Makefile.unittest