More objc gc stuff. Read/Write barriers for local static/extern,
diagnostics on use of __weak attribute on fields,
Early support for read/write barriers for objc fields.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59682 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaDeclAttr.cpp b/lib/Sema/SemaDeclAttr.cpp
index 4bf55dd..57d1cc7 100644
--- a/lib/Sema/SemaDeclAttr.cpp
+++ b/lib/Sema/SemaDeclAttr.cpp
@@ -555,8 +555,11 @@
ObjCGCAttr::GCAttrTypes type;
- if (Attr.getParameterName()->isName("weak"))
+ if (Attr.getParameterName()->isName("weak")) {
+ if (isa<FieldDecl>(d))
+ S.Diag(Attr.getLoc(), diag::warn_attribute_weak_on_field);
type = ObjCGCAttr::Weak;
+ }
else if (Attr.getParameterName()->isName("strong"))
type = ObjCGCAttr::Strong;
else {