1 files changed, 12 insertions, 5 deletions
diff --git a/lib/Sema/SemaDeclAttr.cpp b/lib/Sema/SemaDeclAttr.cpp
index 32be26efa14fd..6c492fac9eb9d 100644
--- a/lib/Sema/SemaDeclAttr.cpp
+++ b/lib/Sema/SemaDeclAttr.cpp
@@ -238,7 +238,7 @@ static typename std::enable_if<std::is_base_of<clang::Attr, AttrInfo>::value,
 getAttrName(const AttrInfo &Attr) {
   return &Attr;
 }
-const IdentifierInfo *getAttrName(const clang::AttributeList &Attr) {
+static const IdentifierInfo *getAttrName(const clang::AttributeList &Attr) {
   return Attr.getName();
 }
 
@@ -949,7 +949,7 @@ static bool checkFunctionConditionAttr(Sema &S, Decl *D,
     Msg = "<no message provided>";
 
   SmallVector<PartialDiagnosticAt, 8> Diags;
-  if (!Cond->isValueDependent() &&
+  if (isa<FunctionDecl>(D) && !Cond->isValueDependent() &&
       !Expr::isPotentialConstantExprUnevaluated(Cond, cast<FunctionDecl>(D),
                                                 Diags)) {
     S.Diag(Attr.getLoc(), diag::err_attr_cond_never_constant_expr)
@@ -1037,10 +1037,11 @@ static void handleDiagnoseIfAttr(Sema &S, Decl *D, const AttributeList &Attr) {
     return;
   }
 
-  auto *FD = cast<FunctionDecl>(D);
-  bool ArgDependent = ArgumentDependenceChecker(FD).referencesArgs(Cond);
+  bool ArgDependent = false;
+  if (const auto *FD = dyn_cast<FunctionDecl>(D))
+    ArgDependent = ArgumentDependenceChecker(FD).referencesArgs(Cond);
   D->addAttr(::new (S.Context) DiagnoseIfAttr(
-      Attr.getRange(), S.Context, Cond, Msg, DiagType, ArgDependent, FD,
+      Attr.getRange(), S.Context, Cond, Msg, DiagType, ArgDependent, cast<NamedDecl>(D),
       Attr.getAttributeSpellingListIndex()));
 }
 
@@ -7283,6 +7284,12 @@ public:
     return true;
   }
 
+  bool VisitObjCAvailabilityCheckExpr(ObjCAvailabilityCheckExpr *E) {
+    SemaRef.Diag(E->getLocStart(), diag::warn_at_available_unchecked_use)
+        << (!SemaRef.getLangOpts().ObjC1);
+    return true;
+  }
+
   bool VisitTypeLoc(TypeLoc Ty);
 };