Check invalid debug info for enums. This may happen when underlyng enum is optimized...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83655 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 1ea148e54947e504b96d581200df6d2c67ff777e..86532e816d60282806903493af11ee8cd8d9f5b6 100644 (file)
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/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;