Correct UnaryTransformTypeLoc to properly initialize.

The initializeLocal function of UnaryTransformTypeLoc missed
the UnderlyingTInfo member.  This caused a null-dereference
issue, as reported in PR23421. This patch correctly initializss 
the UnderlyingTInfo.

llvm-svn: 320765

1 files changed, 9 insertions, 0 deletions

diff --git a/clang/lib/AST/TypeLoc.cpp b/clang/lib/AST/TypeLoc.cpp
index 6e18fe25fcb5..b05c5fc68096 100644
--- a/clang/lib/AST/TypeLoc.cpp
+++ b/clang/lib/AST/TypeLoc.cpp
@@ -444,6 +444,15 @@ void TypeOfTypeLoc::initializeLocal(ASTContext &Context,
       getUnderlyingType(), Loc);
 }
 
+void UnaryTransformTypeLoc::initializeLocal(ASTContext &Context,
+                                       SourceLocation Loc) {
+    setKWLoc(Loc);
+    setRParenLoc(Loc);
+    setLParenLoc(Loc);
+    this->setUnderlyingTInfo(
+        Context.getTrivialTypeSourceInfo(getTypePtr()->getBaseType(), Loc));
+}
+
 void ElaboratedTypeLoc::initializeLocal(ASTContext &Context, 
                                         SourceLocation Loc) {
   setElaboratedKeywordLoc(Loc);