Make PDBSymbol's IPDBSymbol reference const.

llvm-svn: 228553
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbol.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbol.cpp
index f99fc8c..bbc3952 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbol.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbol.cpp
@@ -48,7 +48,7 @@
 
 using namespace llvm;
 
-PDBSymbol::PDBSymbol(IPDBSession &PDBSession,
+PDBSymbol::PDBSymbol(const IPDBSession &PDBSession,
                      std::unique_ptr<IPDBRawSymbol> Symbol)
     : Session(PDBSession), RawSymbol(std::move(Symbol)) {}
 
@@ -59,7 +59,7 @@
     return std::unique_ptr<PDBSymbol>(new Type(PDBSession, std::move(Symbol)));
 
 std::unique_ptr<PDBSymbol>
-PDBSymbol::create(IPDBSession &PDBSession,
+PDBSymbol::create(const IPDBSession &PDBSession,
                   std::unique_ptr<IPDBRawSymbol> Symbol) {
   switch (Symbol->getSymTag()) {
     FACTORY_SYMTAG_CASE(Exe, PDBSymbolExe)
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolAnnotation.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolAnnotation.cpp
index 679ddb9..ed30c7d 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolAnnotation.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolAnnotation.cpp
@@ -14,7 +14,7 @@
 
 using namespace llvm;
 
-PDBSymbolAnnotation::PDBSymbolAnnotation(IPDBSession &PDBSession,
+PDBSymbolAnnotation::PDBSymbolAnnotation(const IPDBSession &PDBSession,
                                          std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(PDBSession, std::move(Symbol)) {}
 
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolBlock.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolBlock.cpp
index 84b762f..6f6f8ec 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolBlock.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolBlock.cpp
@@ -14,7 +14,7 @@
 
 using namespace llvm;
 
-PDBSymbolBlock::PDBSymbolBlock(IPDBSession &PDBSession,
+PDBSymbolBlock::PDBSymbolBlock(const IPDBSession &PDBSession,
                                std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(Session, std::move(Symbol)) {}
 
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolCompiland.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolCompiland.cpp
index 4d2e413..02a48fd 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolCompiland.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolCompiland.cpp
@@ -17,7 +17,7 @@
 
 using namespace llvm;
 
-PDBSymbolCompiland::PDBSymbolCompiland(IPDBSession &PDBSession,
+PDBSymbolCompiland::PDBSymbolCompiland(const IPDBSession &PDBSession,
                                        std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(PDBSession, std::move(Symbol)) {}
 
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolCompilandDetails.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolCompilandDetails.cpp
index e7bf08c..bc03448 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolCompilandDetails.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolCompilandDetails.cpp
@@ -15,7 +15,7 @@
 using namespace llvm;
 
 PDBSymbolCompilandDetails::PDBSymbolCompilandDetails(
-    IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
+    const IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(Session, std::move(Symbol)) {}
 
 void PDBSymbolCompilandDetails::dump(llvm::raw_ostream &OS) const {}
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolCompilandEnv.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolCompilandEnv.cpp
index 9be32d3..8ad90ee 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolCompilandEnv.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolCompilandEnv.cpp
@@ -16,7 +16,7 @@
 using namespace llvm;
 
 PDBSymbolCompilandEnv::PDBSymbolCompilandEnv(
-    IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
+    const IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(PDBSession, std::move(Symbol)) {}
 
 std::string PDBSymbolCompilandEnv::getValue() const {
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolCustom.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolCustom.cpp
index ce13142..0d44334 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolCustom.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolCustom.cpp
@@ -15,7 +15,7 @@
 
 using namespace llvm;
 
-PDBSymbolCustom::PDBSymbolCustom(IPDBSession &PDBSession,
+PDBSymbolCustom::PDBSymbolCustom(const IPDBSession &PDBSession,
                                  std::unique_ptr<IPDBRawSymbol> CustomSymbol)
     : PDBSymbol(PDBSession, std::move(CustomSymbol)) {}
 
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolData.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolData.cpp
index db9518c..e93307fb 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolData.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolData.cpp
@@ -12,7 +12,7 @@
 
 using namespace llvm;
 
-PDBSymbolData::PDBSymbolData(IPDBSession &PDBSession,
+PDBSymbolData::PDBSymbolData(const IPDBSession &PDBSession,
                              std::unique_ptr<IPDBRawSymbol> DataSymbol)
     : PDBSymbol(PDBSession, std::move(DataSymbol)) {}
 
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolExe.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolExe.cpp
index c65c9fb..494c51c 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolExe.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolExe.cpp
@@ -17,7 +17,7 @@
 
 using namespace llvm;
 
-PDBSymbolExe::PDBSymbolExe(IPDBSession &PDBSession,
+PDBSymbolExe::PDBSymbolExe(const IPDBSession &PDBSession,
                            std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(PDBSession, std::move(Symbol)) {}
 
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolFunc.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolFunc.cpp
index f070a1d..38959f1 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolFunc.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolFunc.cpp
@@ -14,7 +14,7 @@
 
 using namespace llvm;
 
-PDBSymbolFunc::PDBSymbolFunc(IPDBSession &PDBSession,
+PDBSymbolFunc::PDBSymbolFunc(const IPDBSession &PDBSession,
                              std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(PDBSession, std::move(Symbol)) {}
 
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolFuncDebugEnd.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolFuncDebugEnd.cpp
index a88ea2a..4f5cf79 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolFuncDebugEnd.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolFuncDebugEnd.cpp
@@ -15,7 +15,7 @@
 using namespace llvm;
 
 PDBSymbolFuncDebugEnd::PDBSymbolFuncDebugEnd(
-    IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
+    const IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(Session, std::move(Symbol)) {}
 
 void PDBSymbolFuncDebugEnd::dump(llvm::raw_ostream &OS) const {}
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolFuncDebugStart.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolFuncDebugStart.cpp
index 6128e05..151c25e 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolFuncDebugStart.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolFuncDebugStart.cpp
@@ -15,7 +15,7 @@
 using namespace llvm;
 
 PDBSymbolFuncDebugStart::PDBSymbolFuncDebugStart(
-    IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
+    const IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(Session, std::move(Symbol)) {}
 
 void PDBSymbolFuncDebugStart::dump(llvm::raw_ostream &OS) const {}
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolLabel.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolLabel.cpp
index 0b893c3..3d6f9d7 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolLabel.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolLabel.cpp
@@ -14,7 +14,7 @@
 
 using namespace llvm;
 
-PDBSymbolLabel::PDBSymbolLabel(IPDBSession &PDBSession,
+PDBSymbolLabel::PDBSymbolLabel(const IPDBSession &PDBSession,
                                std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(Session, std::move(Symbol)) {}
 
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolPublicSymbol.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolPublicSymbol.cpp
index b56abb0..7a63051 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolPublicSymbol.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolPublicSymbol.cpp
@@ -15,7 +15,7 @@
 using namespace llvm;
 
 PDBSymbolPublicSymbol::PDBSymbolPublicSymbol(
-    IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
+    const IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(Session, std::move(Symbol)) {}
 
 void PDBSymbolPublicSymbol::dump(llvm::raw_ostream &OS) const {}
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolThunk.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolThunk.cpp
index a6ff473..70cfa9c 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolThunk.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolThunk.cpp
@@ -14,7 +14,7 @@
 
 using namespace llvm;
 
-PDBSymbolThunk::PDBSymbolThunk(IPDBSession &PDBSession,
+PDBSymbolThunk::PDBSymbolThunk(const IPDBSession &PDBSession,
                                std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(Session, std::move(Symbol)) {}
 
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolTypeArray.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolTypeArray.cpp
index 239681a..12fe865 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolTypeArray.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolTypeArray.cpp
@@ -14,7 +14,7 @@
 
 using namespace llvm;
 
-PDBSymbolTypeArray::PDBSymbolTypeArray(IPDBSession &PDBSession,
+PDBSymbolTypeArray::PDBSymbolTypeArray(const IPDBSession &PDBSession,
                                        std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(PDBSession, std::move(Symbol)) {}
 
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolTypeBaseClass.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolTypeBaseClass.cpp
index 545d66e..7e28e02 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolTypeBaseClass.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolTypeBaseClass.cpp
@@ -15,7 +15,7 @@
 using namespace llvm;
 
 PDBSymbolTypeBaseClass::PDBSymbolTypeBaseClass(
-    IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
+    const IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(Session, std::move(Symbol)) {}
 
 void PDBSymbolTypeBaseClass::dump(llvm::raw_ostream &OS) const {}
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolTypeBuiltin.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolTypeBuiltin.cpp
index 065231f..e1d00ae 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolTypeBuiltin.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolTypeBuiltin.cpp
@@ -15,7 +15,7 @@
 using namespace llvm;
 
 PDBSymbolTypeBuiltin::PDBSymbolTypeBuiltin(
-    IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
+    const IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(PDBSession, std::move(Symbol)) {}
 
 void PDBSymbolTypeBuiltin::dump(llvm::raw_ostream &OS) const {}
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolTypeCustom.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolTypeCustom.cpp
index a4c125c..2b78c90 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolTypeCustom.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolTypeCustom.cpp
@@ -14,7 +14,7 @@
 
 using namespace llvm;
 
-PDBSymbolTypeCustom::PDBSymbolTypeCustom(IPDBSession &PDBSession,
+PDBSymbolTypeCustom::PDBSymbolTypeCustom(const IPDBSession &PDBSession,
                                          std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(PDBSession, std::move(Symbol)) {}
 
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolTypeDimension.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolTypeDimension.cpp
index 1ace2fc..7912164 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolTypeDimension.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolTypeDimension.cpp
@@ -16,7 +16,7 @@
 using namespace llvm;
 
 PDBSymbolTypeDimension::PDBSymbolTypeDimension(
-    IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
+    const IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(PDBSession, std::move(Symbol)) {}
 
 void PDBSymbolTypeDimension::dump(llvm::raw_ostream &OS) const {}
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolTypeEnum.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolTypeEnum.cpp
index c97a042..133ccea 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolTypeEnum.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolTypeEnum.cpp
@@ -14,7 +14,7 @@
 
 using namespace llvm;
 
-PDBSymbolTypeEnum::PDBSymbolTypeEnum(IPDBSession &PDBSession,
+PDBSymbolTypeEnum::PDBSymbolTypeEnum(const IPDBSession &PDBSession,
                                      std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(PDBSession, std::move(Symbol)) {}
 
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolTypeFriend.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolTypeFriend.cpp
index 8587dcf..303d2b1 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolTypeFriend.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolTypeFriend.cpp
@@ -14,7 +14,7 @@
 
 using namespace llvm;
 
-PDBSymbolTypeFriend::PDBSymbolTypeFriend(IPDBSession &PDBSession,
+PDBSymbolTypeFriend::PDBSymbolTypeFriend(const IPDBSession &PDBSession,
                                          std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(PDBSession, std::move(Symbol)) {}
 
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolTypeFunctionArg.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolTypeFunctionArg.cpp
index de8c4bf..9a1af4f 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolTypeFunctionArg.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolTypeFunctionArg.cpp
@@ -15,7 +15,7 @@
 using namespace llvm;
 
 PDBSymbolTypeFunctionArg::PDBSymbolTypeFunctionArg(
-    IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
+    const IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(PDBSession, std::move(Symbol)) {}
 
 void PDBSymbolTypeFunctionArg::dump(llvm::raw_ostream &OS) const {}
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolTypeFunctionSig.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolTypeFunctionSig.cpp
index 73f61e9..c31185e 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolTypeFunctionSig.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolTypeFunctionSig.cpp
@@ -15,7 +15,7 @@
 using namespace llvm;
 
 PDBSymbolTypeFunctionSig::PDBSymbolTypeFunctionSig(
-    IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
+    const IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(PDBSession, std::move(Symbol)) {}
 
 void PDBSymbolTypeFunctionSig::dump(llvm::raw_ostream &OS) const {}
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolTypeManaged.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolTypeManaged.cpp
index cf3339c..2a024f5 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolTypeManaged.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolTypeManaged.cpp
@@ -15,7 +15,7 @@
 using namespace llvm;
 
 PDBSymbolTypeManaged::PDBSymbolTypeManaged(
-    IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
+    const IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(PDBSession, std::move(Symbol)) {}
 
 void PDBSymbolTypeManaged::dump(llvm::raw_ostream &OS) const {}
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolTypePointer.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolTypePointer.cpp
index b081cdd..95ea850 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolTypePointer.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolTypePointer.cpp
@@ -16,7 +16,7 @@
 using namespace llvm;
 
 PDBSymbolTypePointer::PDBSymbolTypePointer(
-    IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
+    const IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(PDBSession, std::move(Symbol)) {}
 
 void PDBSymbolTypePointer::dump(llvm::raw_ostream &OS) const {}
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolTypeTypedef.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolTypeTypedef.cpp
index 42ab501..8b4fd5d 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolTypeTypedef.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolTypeTypedef.cpp
@@ -16,7 +16,7 @@
 using namespace llvm;
 
 PDBSymbolTypeTypedef::PDBSymbolTypeTypedef(
-    IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
+    const IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(PDBSession, std::move(Symbol)) {}
 
 void PDBSymbolTypeTypedef::dump(llvm::raw_ostream &OS) const {}
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolTypeUDT.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolTypeUDT.cpp
index 32b003c..bd09fba 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolTypeUDT.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolTypeUDT.cpp
@@ -14,7 +14,7 @@
 
 using namespace llvm;
 
-PDBSymbolTypeUDT::PDBSymbolTypeUDT(IPDBSession &PDBSession,
+PDBSymbolTypeUDT::PDBSymbolTypeUDT(const IPDBSession &PDBSession,
                                    std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(PDBSession, std::move(Symbol)) {}
 
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolTypeVTable.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolTypeVTable.cpp
index ca533ab..52169bb 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolTypeVTable.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolTypeVTable.cpp
@@ -14,7 +14,7 @@
 
 using namespace llvm;
 
-PDBSymbolTypeVTable::PDBSymbolTypeVTable(IPDBSession &PDBSession,
+PDBSymbolTypeVTable::PDBSymbolTypeVTable(const IPDBSession &PDBSession,
                                          std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(PDBSession, std::move(Symbol)) {}
 
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolTypeVTableShape.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolTypeVTableShape.cpp
index b8336f4..186f86f 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolTypeVTableShape.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolTypeVTableShape.cpp
@@ -15,7 +15,7 @@
 using namespace llvm;
 
 PDBSymbolTypeVTableShape::PDBSymbolTypeVTableShape(
-    IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
+    const IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(PDBSession, std::move(Symbol)) {}
 
 void PDBSymbolTypeVTableShape::dump(llvm::raw_ostream &OS) const {}
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolUnknown.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolUnknown.cpp
index 371d8b9..56b7023 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolUnknown.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolUnknown.cpp
@@ -14,7 +14,7 @@
 
 using namespace llvm;
 
-PDBSymbolUnknown::PDBSymbolUnknown(IPDBSession &PDBSession,
+PDBSymbolUnknown::PDBSymbolUnknown(const IPDBSession &PDBSession,
                                    std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(PDBSession, std::move(Symbol)) {}
 
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolUsingNamespace.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolUsingNamespace.cpp
index 2045ec0..0559067 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolUsingNamespace.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolUsingNamespace.cpp
@@ -15,7 +15,7 @@
 using namespace llvm;
 
 PDBSymbolUsingNamespace::PDBSymbolUsingNamespace(
-    IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
+    const IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
     : PDBSymbol(PDBSession, std::move(Symbol)) {}
 
 void PDBSymbolUsingNamespace::dump(llvm::raw_ostream &OS) const {}