diff --git a/llvm-gcc-4.2/gcc/llvm-debug.cpp b/llvm-gcc-4.2/gcc/llvm-debug.cpp
index 7fcff95..986641f 100644
--- a/llvm-gcc-4.2/gcc/llvm-debug.cpp
+++ b/llvm-gcc-4.2/gcc/llvm-debug.cpp
@@ -208,6 +208,8 @@
 , PrevFullPath("")
 , PrevLineNo(0)
 , PrevBB(NULL)
+, CurrentGCCLexicalBlock(NULL)
+, FwdTypeCount(0)
 , RegionStack()
 {}
 
@@ -582,10 +584,12 @@
 
   // Create a  place holder type first. The may be used as a context
   // for the argument types.
+  char *FwdTypeName = (char *)alloca(65);
+  sprintf(FwdTypeName, "fwd.type.%d", FwdTypeCount++);
   llvm::DIType FwdType = 
     DebugFactory.CreateCompositeType(llvm::dwarf::DW_TAG_subroutine_type,
                                      getOrCreateCompileUnit(NULL), 
-                                     StringRef(),
+                                     FwdTypeName,
                                      getOrCreateCompileUnit(NULL), 
                                      0, 0, 0, 0, 0,
                                      llvm::DIType(), llvm::DIArray());
diff --git a/llvm-gcc-4.2/gcc/llvm-debug.h b/llvm-gcc-4.2/gcc/llvm-debug.h
index 0e85a13..83ccfa5 100644
--- a/llvm-gcc-4.2/gcc/llvm-debug.h
+++ b/llvm-gcc-4.2/gcc/llvm-debug.h
@@ -62,7 +62,15 @@
   const char *PrevFullPath;             // Previous location file encountered.
   int PrevLineNo;                       // Previous location line# encountered.
   BasicBlock *PrevBB;                   // Last basic block encountered.
-  tree_node *CurrentGCCLexicalBlock;	// Current GCC lexical block (or enclosing FUNCTION_DECL).
+  
+  // Current GCC lexical block (or enclosing FUNCTION_DECL).
+  tree_node *CurrentGCCLexicalBlock;	
+  
+  // This counter counts debug info for forward referenced subroutine types.
+  // This counter is used to create unique name for such types so that their 
+  // debug info (through MDNodes) is not shared accidently.
+  unsigned FwdTypeCount;
+
   std::map<std::string, WeakVH > CUCache;
   std::map<tree_node *, WeakVH > TypeCache;
                                         // Cache of previously constructed