Create a new InjectedClassNameType to represent bare-word references to the

injected class name of a class template or class template partial specialization.
This is a non-canonical type;  the canonical type is still a template 
specialization type.  This becomes the TypeForDecl of the pattern declaration,
which cleans up some amount of code (and complicates some other parts, but
whatever).

Fixes PR6326 and probably a few others, primarily by re-establishing a few
invariants about TypeLoc sizes.     



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98134 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 9 insertions, 0 deletions

diff --git a/lib/Frontend/PCHReader.cpp b/lib/Frontend/PCHReader.cpp
index 9a5cae6e81..267f4c1585 100644
--- a/lib/Frontend/PCHReader.cpp
+++ b/lib/Frontend/PCHReader.cpp
@@ -2018,6 +2018,12 @@ QualType PCHReader::ReadTypeRecord(uint64_t Offset) {
       Context->getSubstTemplateTypeParmType(cast<TemplateTypeParmType>(Parm),
                                             Replacement);
   }
+
+  case pch::TYPE_INJECTED_CLASS_NAME: {
+    CXXRecordDecl *D = cast<CXXRecordDecl>(GetDecl(Record[0]));
+    QualType TST = GetType(Record[1]); // probably derivable
+    return Context->getInjectedClassNameType(D, TST);
+  }
   }
   // Suppress a GCC warning
   return QualType();
@@ -2172,6 +2178,9 @@ void TypeLocReader::VisitTemplateSpecializationTypeLoc(
 void TypeLocReader::VisitQualifiedNameTypeLoc(QualifiedNameTypeLoc TL) {
   TL.setNameLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
 }
+void TypeLocReader::VisitInjectedClassNameTypeLoc(InjectedClassNameTypeLoc TL) {
+  TL.setNameLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
 void TypeLocReader::VisitTypenameTypeLoc(TypenameTypeLoc TL) {
   TL.setNameLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
 }