Type::getDesugaredType needs to handle decltype types.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74115 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 0 deletions

diff --git a/lib/AST/Type.cpp b/lib/AST/Type.cpp
index 9894adf8d0..4dfe35ea41 100644
--- a/lib/AST/Type.cpp
+++ b/lib/AST/Type.cpp
@@ -112,6 +112,8 @@ QualType Type::getDesugaredType(bool ForDisplay) const {
     return TOE->getUnderlyingExpr()->getType().getDesugaredType();
   if (const TypeOfType *TOT = dyn_cast<TypeOfType>(this))
     return TOT->getUnderlyingType().getDesugaredType();
+  if (const DecltypeType *DTT = dyn_cast<DecltypeType>(this))
+    return DTT->getUnderlyingExpr()->getType().getDesugaredType();
   if (const TemplateSpecializationType *Spec 
         = dyn_cast<TemplateSpecializationType>(this)) {
     if (ForDisplay)