Emit an update record if we instantiate the definition of a function template

specialization from a module. (This can also happen for function template
specializations in PCHs if they're instantiated eagerly, because they're
constexpr or have a deduced return type.)

llvm-svn: 204547

1 files changed, 3 insertions, 1 deletions

diff --git a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
index 376f6f79f4c..0982f442573 100644
--- a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
+++ b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
@@ -12,6 +12,7 @@
 #include "clang/Sema/SemaInternal.h"
 #include "clang/AST/ASTConsumer.h"
 #include "clang/AST/ASTContext.h"
+#include "clang/AST/ASTMutationListener.h"
 #include "clang/AST/DeclTemplate.h"
 #include "clang/AST/DeclVisitor.h"
 #include "clang/AST/DependentDiagnostic.h"
@@ -3439,7 +3440,8 @@ void Sema::InstantiateFunctionDefinition(SourceLocation PointOfInstantiation,
 
     PerformDependentDiagnostics(PatternDecl, TemplateArgs);
 
-    // FIXME: Notify the ASTMutationListener that we did this.
+    if (auto *Listener = getASTMutationListener())
+      Listener->FunctionDefinitionInstantiated(Function);
 
     savedContext.pop();
   }