Diagnose assiging to an interface object in

non-fragile abi mode as sizes are not statically known.
Fixes radar 8315734.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111191 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 0 deletions

diff --git a/lib/Sema/SemaExpr.cpp b/lib/Sema/SemaExpr.cpp
index 59d0328d6e..42d1599e2e 100644
--- a/lib/Sema/SemaExpr.cpp
+++ b/lib/Sema/SemaExpr.cpp
@@ -6538,6 +6538,11 @@ Action::OwningExprResult Sema::CreateBuiltinBinOp(SourceLocation OpLoc,
   }
   if (ResultTy.isNull())
     return ExprError();
+  if (ResultTy->isObjCObjectType() && LangOpts.ObjCNonFragileABI) {
+    if (Opc >= BinaryOperator::Assign && Opc <= BinaryOperator::OrAssign) 
+          Diag(OpLoc, diag::err_assignment_requires_nonfragile_object)
+                << ResultTy;
+  }
   if (CompResultTy.isNull())
     return Owned(new (Context) BinaryOperator(lhs, rhs, Opc, ResultTy, OpLoc));
   else