From 5bc8543a365d4ffa8ae5eef037b9e39163a93f08 Mon Sep 17 00:00:00 2001
From: Reid Kleckner <rnk@google.com>
Date: Fri, 12 May 2017 17:02:40 +0000
Subject: [codeview] Fix assertion failure introduced in r295354 refactoring

CodeViewDebug sets Asm to nullptr to disable debug info generation.  You
can get a .ll file like no-cus.ll from 'clang -gcodeview -g0', which
happens in the ubsan test suite.

llvm-svn: 302923
---
 llvm/lib/CodeGen/AsmPrinter/DebugHandlerBase.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'llvm/lib/CodeGen/AsmPrinter/DebugHandlerBase.cpp')

diff --git a/llvm/lib/CodeGen/AsmPrinter/DebugHandlerBase.cpp b/llvm/lib/CodeGen/AsmPrinter/DebugHandlerBase.cpp
index 1d63e33a4d3..826162ad47c 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DebugHandlerBase.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DebugHandlerBase.cpp
@@ -129,10 +129,9 @@ bool hasDebugInfo(const MachineModuleInfo *MMI, const MachineFunction *MF) {
 }
 
 void DebugHandlerBase::beginFunction(const MachineFunction *MF) {
-  assert(Asm);
   PrevInstBB = nullptr;
 
-  if (!hasDebugInfo(MMI, MF)) {
+  if (!Asm || !hasDebugInfo(MMI, MF)) {
     skippedNonDebugFunction();
     return;
   }
-- 
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