When instantiating the definition of a member function of a class

template, introduce that member function into the template
instantiation stack. Also, add diagnostics showing the member function
within the instantiation stack and clean up the qualified-name
printing so that we get something like:

  note: in instantiation of member function 'Switch1<int, 2, 2>::f'
  requested here

in the template instantiation backtrace.

llvm-svn: 72015

1 files changed, 5 insertions, 2 deletions

diff --git a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
index 0c13027864e..c08841abaa0 100644
--- a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
+++ b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
@@ -574,7 +574,8 @@ TemplateDeclInstantiator::InitMethodInstantiation(CXXMethodDecl *New,
 ///
 /// \param Function the already-instantiated declaration of a
 /// function.
-void Sema::InstantiateFunctionDefinition(FunctionDecl *Function) {
+void Sema::InstantiateFunctionDefinition(SourceLocation PointOfInstantiation,
+                                         FunctionDecl *Function) {
   // FIXME: make this work for function template specializations, too.
 
   if (Function->isInvalidDecl())
@@ -590,7 +591,9 @@ void Sema::InstantiateFunctionDefinition(FunctionDecl *Function) {
   if (!Pattern)
     return;
 
-  // FIXME: add to the instantiation stack.
+  InstantiatingTemplate Inst(*this, PointOfInstantiation, Function);
+  if (Inst)
+    return;
 
   ActOnStartOfFunctionDef(0, DeclPtrTy::make(Function));