Index: llvm/trunk/include/llvm/DebugInfo/PDB/DIA/DIARawSymbol.h
===================================================================
--- llvm/trunk/include/llvm/DebugInfo/PDB/DIA/DIARawSymbol.h
+++ llvm/trunk/include/llvm/DebugInfo/PDB/DIA/DIARawSymbol.h
@@ -103,6 +103,7 @@
   uint32_t getSizeInUdt() const override;
   uint32_t getSlot() const override;
   std::string getSourceFileName() const override;
+  std::unique_ptr<IPDBLineNumber> getSrcLineOnTypeDefn() const override;
   uint32_t getStride() const override;
   uint32_t getSubTypeId() const override;
   std::string getSymbolsFileName() const override;
Index: llvm/trunk/include/llvm/DebugInfo/PDB/IPDBRawSymbol.h
===================================================================
--- llvm/trunk/include/llvm/DebugInfo/PDB/IPDBRawSymbol.h
+++ llvm/trunk/include/llvm/DebugInfo/PDB/IPDBRawSymbol.h
@@ -115,6 +115,8 @@
   virtual uint32_t getSizeInUdt() const = 0;
   virtual uint32_t getSlot() const = 0;
   virtual std::string getSourceFileName() const = 0;
+  virtual std::unique_ptr<IPDBLineNumber>
+  getSrcLineOnTypeDefn() const = 0;
   virtual uint32_t getStride() const = 0;
   virtual uint32_t getSubTypeId() const = 0;
   virtual std::string getSymbolsFileName() const = 0;
Index: llvm/trunk/include/llvm/DebugInfo/PDB/Native/NativeRawSymbol.h
===================================================================
--- llvm/trunk/include/llvm/DebugInfo/PDB/Native/NativeRawSymbol.h
+++ llvm/trunk/include/llvm/DebugInfo/PDB/Native/NativeRawSymbol.h
@@ -108,6 +108,7 @@
   uint32_t getSizeInUdt() const override;
   uint32_t getSlot() const override;
   std::string getSourceFileName() const override;
+  std::unique_ptr<IPDBLineNumber> getSrcLineOnTypeDefn() const override;
   uint32_t getStride() const override;
   uint32_t getSubTypeId() const override;
   std::string getSymbolsFileName() const override;
Index: llvm/trunk/lib/DebugInfo/PDB/DIA/DIARawSymbol.cpp
===================================================================
--- llvm/trunk/lib/DebugInfo/PDB/DIA/DIARawSymbol.cpp
+++ llvm/trunk/lib/DebugInfo/PDB/DIA/DIARawSymbol.cpp
@@ -13,6 +13,7 @@
 #include "llvm/DebugInfo/CodeView/Formatters.h"
 #include "llvm/DebugInfo/PDB/DIA/DIAEnumLineNumbers.h"
 #include "llvm/DebugInfo/PDB/DIA/DIAEnumSymbols.h"
+#include "llvm/DebugInfo/PDB/DIA/DIALineNumber.h"
 #include "llvm/DebugInfo/PDB/DIA/DIASession.h"
 #include "llvm/DebugInfo/PDB/PDBExtras.h"
 #include "llvm/DebugInfo/PDB/PDBSymbolTypeBuiltin.h"
@@ -748,6 +749,15 @@
   return PrivateGetDIAValue(Symbol, &IDiaSymbol::get_sourceFileName);
 }
 
+std::unique_ptr<IPDBLineNumber>
+DIARawSymbol::getSrcLineOnTypeDefn() const {
+  CComPtr<IDiaLineNumber> LineNumber;
+  if (FAILED(Symbol->getSrcLineOnTypeDefn(&LineNumber)) || !LineNumber)
+    return nullptr;
+
+  return llvm::make_unique<DIALineNumber>(LineNumber);
+}
+
 uint32_t DIARawSymbol::getStride() const {
   return PrivateGetDIAValue(Symbol, &IDiaSymbol::get_stride);
 }
Index: llvm/trunk/lib/DebugInfo/PDB/Native/NativeRawSymbol.cpp
===================================================================
--- llvm/trunk/lib/DebugInfo/PDB/Native/NativeRawSymbol.cpp
+++ llvm/trunk/lib/DebugInfo/PDB/Native/NativeRawSymbol.cpp
@@ -7,6 +7,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "llvm/DebugInfo/PDB/IPDBLineNumber.h"
 #include "llvm/DebugInfo/PDB/Native/NativeRawSymbol.h"
 #include "llvm/DebugInfo/PDB/PDBSymbolTypeBuiltin.h"
 
@@ -278,6 +279,11 @@
   return {};
 }
 
+std::unique_ptr<IPDBLineNumber>
+NativeRawSymbol::getSrcLineOnTypeDefn() const {
+  return nullptr;
+}
+
 uint32_t NativeRawSymbol::getStride() const {
   return 0;
 }
Index: llvm/trunk/unittests/DebugInfo/PDB/PDBApiTest.cpp
===================================================================
--- llvm/trunk/unittests/DebugInfo/PDB/PDBApiTest.cpp
+++ llvm/trunk/unittests/DebugInfo/PDB/PDBApiTest.cpp
@@ -11,6 +11,7 @@
 
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/DebugInfo/PDB/IPDBEnumChildren.h"
+#include "llvm/DebugInfo/PDB/IPDBLineNumber.h"
 #include "llvm/DebugInfo/PDB/IPDBRawSymbol.h"
 #include "llvm/DebugInfo/PDB/IPDBSession.h"
 #include "llvm/DebugInfo/PDB/IPDBSourceFile.h"
@@ -195,6 +196,10 @@
     return {};
   }
 
+  std::unique_ptr<IPDBLineNumber> getSrcLineOnTypeDefn() const override {
+    return nullptr;
+  }
+
   MOCK_SYMBOL_ACCESSOR(getAccess)
   MOCK_SYMBOL_ACCESSOR(getAddressOffset)
   MOCK_SYMBOL_ACCESSOR(getAddressSection)