From dece7039dd40eea928ec10abc1e310a846b68dd7 Mon Sep 17 00:00:00 2001
From: Alexander Potapenko <glider@google.com>
Date: Mon, 12 Nov 2012 14:49:58 +0000
Subject: [PATCH] Don't use __cxa_demangle under MSVC (which doesn't have it)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167730 91177308-0d34-0410-b5e6-96231b3b80d8
---
 tools/llvm-symbolizer/llvm-symbolizer.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tools/llvm-symbolizer/llvm-symbolizer.cpp b/tools/llvm-symbolizer/llvm-symbolizer.cpp
index 79bdcedd3b6..f3e365981e4 100644
--- a/tools/llvm-symbolizer/llvm-symbolizer.cpp
+++ b/tools/llvm-symbolizer/llvm-symbolizer.cpp
@@ -287,9 +287,11 @@ static ModuleInfo *getOrCreateModuleInfo(const std::string &ModuleName) {
   return Info;
 }
 
-// Assume that __cxa_demangle is provided by libcxxabi.
+#if !defined(_MSC_VER)
+// Assume that __cxa_demangle is provided by libcxxabi (except for Windows).
 extern "C" char *__cxa_demangle(const char *mangled_name, char *output_buffer,
                                 size_t *length, int *status);
+#endif
 
 static void printDILineInfo(DILineInfo LineInfo) {
   // By default, DILineInfo contains "<invalid>" for function/filename it
@@ -300,6 +302,7 @@ static void printDILineInfo(DILineInfo LineInfo) {
     std::string FunctionName = LineInfo.getFunctionName();
     if (FunctionName == kDILineInfoBadString)
       FunctionName = kSymbolizerBadString;
+#if !defined(_MSC_VER)
     if (Demangle) {
       int status = 0;
       char *DemangledName = __cxa_demangle(
@@ -309,6 +312,7 @@ static void printDILineInfo(DILineInfo LineInfo) {
         free(DemangledName);
       }
     }
+#endif
     outs() << FunctionName << "\n";
   }
   std::string Filename = LineInfo.getFileName();