When we start the definition of a class template, set the

InjectedClassNameType's Decl to point at the definition. It's a little
messy, but we do the same thing with classes and their record types,
since much of Clang expects that the TagDecl* one gets out of a type
is the definition. Fixes several Boost.Proto failures.

llvm-svn: 102691

1 files changed, 9 insertions, 0 deletions

diff --git a/clang/lib/AST/Decl.cpp b/clang/lib/AST/Decl.cpp
index fc805451cba..ffe49671d8a 100644
--- a/clang/lib/AST/Decl.cpp
+++ b/clang/lib/AST/Decl.cpp
@@ -1479,6 +1479,10 @@ void TagDecl::startDefinition() {
   if (TagType *TagT = const_cast<TagType *>(TypeForDecl->getAs<TagType>())) {
     TagT->decl.setPointer(this);
     TagT->decl.setInt(1);
+  } else if (InjectedClassNameType *Injected
+               = const_cast<InjectedClassNameType *>(
+                                 TypeForDecl->getAs<InjectedClassNameType>())) {
+    Injected->Decl = cast<CXXRecordDecl>(this);
   }
 
   if (isa<CXXRecordDecl>(this)) {
@@ -1500,6 +1504,11 @@ void TagDecl::completeDefinition() {
     assert(TagT->decl.getPointer() == this &&
            "Attempt to redefine a tag definition?");
     TagT->decl.setInt(0);
+  } else if (InjectedClassNameType *Injected
+               = const_cast<InjectedClassNameType *>(
+                                TypeForDecl->getAs<InjectedClassNameType>())) {
+    assert(Injected->Decl == this &&
+           "Attempt to redefine a class template definition?");
   }
 }