From fafa1fe2ad067386817b53b46f445014ac7cb792 Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Fri, 9 Oct 2009 17:51:49 +0000
Subject: [PATCH] Check invalid debug info for enums. This may happen when
 underlyng enum is optimized away. Eventually DwarfChecker will clean this up
 during llvm verification stage.

llvm-svn: 83655
---
 llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 1ea148e54947..86532e816d60 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -950,8 +950,10 @@ void DwarfDebug::ConstructTypeDIE(CompileUnit *DW_Unit, DIE &Buffer,
     for (unsigned i = 0, N = Elements.getNumElements(); i < N; ++i) {
       DIE *ElemDie = NULL;
       DIEnumerator Enum(Elements.getElement(i).getNode());
-      ElemDie = ConstructEnumTypeDIE(DW_Unit, &Enum);
-      Buffer.AddChild(ElemDie);
+      if (!Enum.isNull()) {
+        ElemDie = ConstructEnumTypeDIE(DW_Unit, &Enum);
+        Buffer.AddChild(ElemDie);
+      }
     }
   }
     break;