Allow the use of default template arguments when forming a class

template specialization (e.g., std::vector<int> would now be
well-formed, since it relies on a default argument for the Allocator
template parameter). 

This is much less interesting than one might expect, since (1) we're
not actually using the default arguments for anything important, such
as naming an actual Decl, and (2) we'll often need to instantiate the
default arguments to check their well-formedness. The real fun will
come later.

llvm-svn: 64310

1 files changed, 3 insertions, 2 deletions

diff --git a/clang/lib/Sema/SemaTemplate.cpp b/clang/lib/Sema/SemaTemplate.cpp
index 86f1e2017f1..b4436a2c3c1 100644
--- a/clang/lib/Sema/SemaTemplate.cpp
+++ b/clang/lib/Sema/SemaTemplate.cpp
@@ -685,7 +685,7 @@ bool Sema::CheckTemplateArgumentList(TemplateDecl *Template,
   bool Invalid = false;
 
   if (NumArgs > NumParams ||
-      NumArgs < NumParams /*FIXME: default arguments! */) {
+      NumArgs < Params->getMinRequiredArguments()) {
     // FIXME: point at either the first arg beyond what we can handle,
     // or the '>', depending on whether we have too many or too few
     // arguments.
@@ -698,7 +698,8 @@ bool Sema::CheckTemplateArgumentList(TemplateDecl *Template,
           isa<FunctionTemplateDecl>(Template)? 1 :
           isa<TemplateTemplateParmDecl>(Template)? 2 : 3)
       << Template << Range;
-
+    Diag(Template->getLocation(), diag::note_template_decl_here)
+      << Params->getSourceRange();
     Invalid = true;
   }