PR35456: Track definedness of variable template specializations separately from
whether they have an initializer.

We cannot distinguish between a declaration of a variable template
specialization and a definition of one that lacks an initializer without this,
and would previously mistake the latter for the former.

llvm-svn: 319605
diff --git a/clang/lib/Serialization/ASTWriterDecl.cpp b/clang/lib/Serialization/ASTWriterDecl.cpp
index fcf78e85..041ccd4 100644
--- a/clang/lib/Serialization/ASTWriterDecl.cpp
+++ b/clang/lib/Serialization/ASTWriterDecl.cpp
@@ -1494,6 +1494,7 @@
   Record.AddTemplateArgumentList(&D->getTemplateArgs());
   Record.AddSourceLocation(D->getPointOfInstantiation());
   Record.push_back(D->getSpecializationKind());
+  Record.push_back(D->IsCompleteDefinition);
   Record.push_back(D->isCanonicalDecl());
 
   if (D->isCanonicalDecl()) {