Chained PCH: Remember when additional specializations are added to a function template from a previous PCH. Fixes the only crasher when using massive chains on Clang's Sema component. We still have some incomplete codegen there.

llvm-svn: 129516

2 files changed, 8 insertions, 1 deletions

diff --git a/clang/lib/AST/Decl.cpp b/clang/lib/AST/Decl.cpp
index dfa53881f1a..99a180662dd 100644
--- a/clang/lib/AST/Decl.cpp
+++ b/clang/lib/AST/Decl.cpp
@@ -1893,7 +1893,7 @@ FunctionDecl::setFunctionTemplateSpecialization(ASTContext &C,
   // Insert this function template specialization into the set of known
   // function template specializations.
   if (InsertPos)
-    Template->getSpecializations().InsertNode(Info, InsertPos);
+    Template->addSpecialization(Info, InsertPos);
   else {
     // Try to insert the new node. If there is an existing node, leave it, the
     // set will contain the canonical decls while
diff --git a/clang/lib/AST/DeclTemplate.cpp b/clang/lib/AST/DeclTemplate.cpp
index ae17dd15b12..73c91dbd72b 100644
--- a/clang/lib/AST/DeclTemplate.cpp
+++ b/clang/lib/AST/DeclTemplate.cpp
@@ -242,6 +242,13 @@ FunctionTemplateDecl::findSpecialization(const TemplateArgument *Args,
   return findSpecializationImpl(getSpecializations(), Args, NumArgs, InsertPos);
 }
 
+void FunctionTemplateDecl::addSpecialization(
+      FunctionTemplateSpecializationInfo *Info, void *InsertPos) {
+  getSpecializations().InsertNode(Info, InsertPos);
+  if (ASTMutationListener *L = getASTMutationListener())
+    L->AddedCXXTemplateSpecialization(this, Info->Function);
+}
+
 std::pair<const TemplateArgument *, unsigned> 
 FunctionTemplateDecl::getInjectedTemplateArgs() {
   TemplateParameterList *Params = getTemplateParameters();