From 63fe2593ae55b8d9a5fadd8636d7b206c44885a5 Mon Sep 17 00:00:00 2001
From: Nico Weber <nicolasweber@gmx.de>
Date: Sun, 14 Apr 2019 23:08:12 +0000
Subject: llvm-undname: Fix another crash-on-invalid found by oss-fuzz

llvm-svn: 358363
---
 llvm/lib/Demangle/MicrosoftDemangle.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'llvm/lib/Demangle')

diff --git a/llvm/lib/Demangle/MicrosoftDemangle.cpp b/llvm/lib/Demangle/MicrosoftDemangle.cpp
index 719e716a886..882913a9863 100644
--- a/llvm/lib/Demangle/MicrosoftDemangle.cpp
+++ b/llvm/lib/Demangle/MicrosoftDemangle.cpp
@@ -654,7 +654,10 @@ Demangler::translateIntrinsicFunctionCode(char CH,
 IdentifierNode *
 Demangler::demangleFunctionIdentifierCode(StringView &MangledName,
                                           FunctionIdentifierCodeGroup Group) {
-  assert(!MangledName.empty());
+  if (MangledName.empty()) {
+    Error = true;
+    return nullptr;
+  }
   switch (Group) {
   case FunctionIdentifierCodeGroup::Basic:
     switch (char CH = MangledName.popFront()) {
-- 
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