Representation of objc gc's attribute using ExtQualType.
Note that one test attr-objc-gc.m fails. I will fix this
after removing these attributes from the Decl nodes.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64889 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaType.cpp b/lib/Sema/SemaType.cpp
index db885e9..e6aafda 100644
--- a/lib/Sema/SemaType.cpp
+++ b/lib/Sema/SemaType.cpp
@@ -758,6 +758,35 @@
Type = S.Context.getAddrSpaceQualType(Type, ASIdx);
}
+/// HandleObjCGCTypeAttribute - Process an objc's gc attribute on the
+/// specified type. The attribute contains 1 argument, weak or strong.
+static void HandleObjCGCTypeAttribute(QualType &Type,
+ const AttributeList &Attr, Sema &S){
+ // FIXME. Needs more work for this to make sense.
+ if (Type.getObjCGCAttr() != QualType::GCNone) {
+ S.Diag(Attr.getLoc(), diag::err_attribute_address_multiple_qualifiers);
+ return;
+ }
+
+ // Check the attribute arguments.
+ QualType::GCAttrTypes attr;
+ if (!Attr.getParameterName() || Attr.getNumArgs() != 0) {
+ S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1;
+ return;
+ }
+ if (Attr.getParameterName()->isStr("weak"))
+ attr = QualType::Weak;
+ else if (Attr.getParameterName()->isStr("strong"))
+ attr = QualType::Strong;
+ else {
+ S.Diag(Attr.getLoc(), diag::warn_attribute_type_not_supported)
+ << "objc_gc" << Attr.getParameterName();
+ return;
+ }
+
+ Type = S.Context.getObjCGCQualType(Type, attr);
+}
+
void Sema::ProcessTypeAttributeList(QualType &Result, const AttributeList *AL) {
// Scan through and apply attributes to this type where it makes sense. Some
// attributes (such as __address_space__, __vector_size__, etc) apply to the
@@ -771,6 +800,9 @@
case AttributeList::AT_address_space:
HandleAddressSpaceTypeAttribute(Result, *AL, *this);
break;
+ case AttributeList::AT_objc_gc:
+ HandleObjCGCTypeAttribute(Result, *AL, *this);
+ break;
}
}
}