From 33e0c99d67a0f2b3107d66b91a46df894b322901 Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Fri, 6 Nov 2009 18:24:05 +0000
Subject: Tolerate invalid derived type.

llvm-svn: 86269
---
 llvm/lib/Analysis/DebugInfo.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'llvm/lib/Analysis')

diff --git a/llvm/lib/Analysis/DebugInfo.cpp b/llvm/lib/Analysis/DebugInfo.cpp
index 7c1cc35ee9d..24b5ad44f28 100644
--- a/llvm/lib/Analysis/DebugInfo.cpp
+++ b/llvm/lib/Analysis/DebugInfo.cpp
@@ -409,6 +409,10 @@ uint64_t DIDerivedType::getOriginalTypeSize() const {
       Tag == dwarf::DW_TAG_const_type || Tag == dwarf::DW_TAG_volatile_type ||
       Tag == dwarf::DW_TAG_restrict_type) {
     DIType BaseType = getTypeDerivedFrom();
+    // If this type is not derived from any type then take conservative 
+    // approach.
+    if (BaseType.isNull())
+      return getSizeInBits();
     if (BaseType.isDerivedType())
       return DIDerivedType(BaseType.getNode()).getOriginalTypeSize();
     else
-- 
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