2 files changed, 11 insertions, 3 deletions
diff --git a/clang/lib/Sema/SemaAttr.cpp b/clang/lib/Sema/SemaAttr.cpp
index 1900d80b217..4b7aa2b07e5 100644
--- a/clang/lib/Sema/SemaAttr.cpp
+++ b/clang/lib/Sema/SemaAttr.cpp
@@ -277,9 +277,12 @@ void Sema::ActOnPragmaMSComment(SourceLocation CommentLoc,
   Consumer.HandleTopLevelDecl(DeclGroupRef(PCD));
 }
 
-void Sema::ActOnPragmaDetectMismatch(StringRef Name, StringRef Value) {
-  // FIXME: Serialize this.
-  Consumer.HandleDetectMismatch(Name, Value);
+void Sema::ActOnPragmaDetectMismatch(SourceLocation Loc, StringRef Name,
+                                     StringRef Value) {
+  auto *PDMD = PragmaDetectMismatchDecl::Create(
+      Context, Context.getTranslationUnitDecl(), Loc, Name, Value);
+  Context.getTranslationUnitDecl()->addDecl(PDMD);
+  Consumer.HandleTopLevelDecl(DeclGroupRef(PDMD));
 }
 
 void Sema::ActOnPragmaMSPointersToMembers(
diff --git a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
index 844bdd1fa07..ffb7eeda4f1 100644
--- a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
+++ b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
@@ -338,6 +338,11 @@ TemplateDeclInstantiator::VisitPragmaCommentDecl(PragmaCommentDecl *D) {
   llvm_unreachable("pragma comment cannot be instantiated");
 }
 
+Decl *TemplateDeclInstantiator::VisitPragmaDetectMismatchDecl(
+    PragmaDetectMismatchDecl *D) {
+  llvm_unreachable("pragma comment cannot be instantiated");
+}
+
 Decl *
 TemplateDeclInstantiator::VisitExternCContextDecl(ExternCContextDecl *D) {
   llvm_unreachable("extern \"C\" context cannot be instantiated");