Extend type nullability qualifiers for Objective-C.

Introduce context-sensitive, non-underscored nullability specifiers
(nonnull, nullable, null_unspecified) for Objective-C method return
types, method parameter types, and properties.

Introduce Objective-C-specific semantics, including computation of the
nullability of the result of a message send, merging of nullability
information from the @interface of a class into its @implementation,
etc .

This is the Objective-C part of rdar://problem/18868820.

llvm-svn: 240154

1 files changed, 4 insertions, 3 deletions

diff --git a/clang/lib/AST/ASTImporter.cpp b/clang/lib/AST/ASTImporter.cpp
index 911f1681ce6..76e4e119150 100644
--- a/clang/lib/AST/ASTImporter.cpp
+++ b/clang/lib/AST/ASTImporter.cpp
@@ -3922,8 +3922,8 @@ Decl *ASTNodeImporter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) {
   }
 
   // Import the type.
-  TypeSourceInfo *T = Importer.Import(D->getTypeSourceInfo());
-  if (!T)
+  TypeSourceInfo *TSI = Importer.Import(D->getTypeSourceInfo());
+  if (!TSI)
     return nullptr;
 
   // Create the new property.
@@ -3932,7 +3932,8 @@ Decl *ASTNodeImporter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) {
                                Name.getAsIdentifierInfo(), 
                                Importer.Import(D->getAtLoc()),
                                Importer.Import(D->getLParenLoc()),
-                               T,
+                               Importer.Import(D->getType()),
+                               TSI,
                                D->getPropertyImplementation());
   Importer.Imported(D, ToProperty);
   ToProperty->setLexicalDeclContext(LexicalDC);