Index: clang/include/clang/ExtractAPI/ExtractAPIVisitor.h
===================================================================
--- clang/include/clang/ExtractAPI/ExtractAPIVisitor.h
+++ clang/include/clang/ExtractAPI/ExtractAPIVisitor.h
@@ -266,7 +266,9 @@
 
   if (Decl->isStaticDataMember()) {
     SymbolReference Context;
-    auto Record = dyn_cast<RecordDecl>(Decl->getDeclContext());
+    // getDeclContext() should return a RecordDecl since we
+    // are currently handling a static data member.
+    auto *Record = cast<RecordDecl>(Decl->getDeclContext());
     Context.Name = Record->getName();
     Context.USR = API.recordUSR(Record);
     auto Access = DeclarationFragmentsBuilder::getAccessControl(Decl);
Index: clang/lib/ExtractAPI/DeclarationFragments.cpp
===================================================================
--- clang/lib/ExtractAPI/DeclarationFragments.cpp
+++ clang/lib/ExtractAPI/DeclarationFragments.cpp
@@ -688,9 +688,9 @@
     const CXXMethodDecl *Method) {
   DeclarationFragments Fragments;
   std::string Name;
-  if (isa<CXXConstructorDecl>(Method)) {
+  if (const auto *Constructor = dyn_cast<CXXConstructorDecl>(Method)) {
     Name = Method->getNameAsString();
-    if (dyn_cast<CXXConstructorDecl>(Method)->isExplicit())
+    if (Constructor->isExplicit())
       Fragments.append("explicit", DeclarationFragments::FragmentKind::Keyword)
           .appendSpace();
   } else if (isa<CXXDestructorDecl>(Method))
Index: clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
===================================================================
--- clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
+++ clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
@@ -5062,6 +5062,7 @@
     } IR{*this, PatternRec, NewRec};
 
     TypeSourceInfo *NewSI = IR.TransformType(Function->getTypeSourceInfo());
+    assert(NewSI && "Type Transform failed?");
     Function->setType(NewSI->getType());
     Function->setTypeSourceInfo(NewSI);