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-rw-r--r--clang/include/clang/AST/DeclObjC.h12
-rw-r--r--clang/include/clang/Basic/Attr.td4
-rw-r--r--clang/include/clang/Sema/AttributeList.h1
-rw-r--r--clang/lib/Sema/AttributeList.cpp1
-rw-r--r--clang/lib/Sema/SemaDeclAttr.cpp15
5 files changed, 33 insertions, 0 deletions
diff --git a/clang/include/clang/AST/DeclObjC.h b/clang/include/clang/AST/DeclObjC.h
index 7837b2b2f2a..491453ee194 100644
--- a/clang/include/clang/AST/DeclObjC.h
+++ b/clang/include/clang/AST/DeclObjC.h
@@ -864,6 +864,18 @@ public:
return false;
}
+ /// isObjCSuppressAutosynthesis - Checks that a class or one of its super
+ /// classes must not be auto-synthesized. Returns true if it must not be.
+ bool isObjCSuppressAutosynthesis() const {
+ const ObjCInterfaceDecl *Class = this;
+ while (Class) {
+ if (Class->hasAttr<ObjCSuppressAutosynthesisAttr>())
+ return true;
+ Class = Class->getSuperClass();
+ }
+ return false;
+ }
+
ObjCIvarDecl *lookupInstanceVariable(IdentifierInfo *IVarName,
ObjCInterfaceDecl *&ClassDeclared);
ObjCIvarDecl *lookupInstanceVariable(IdentifierInfo *IVarName) {
diff --git a/clang/include/clang/Basic/Attr.td b/clang/include/clang/Basic/Attr.td
index 0839df8baf7..bf9a6ce147f 100644
--- a/clang/include/clang/Basic/Attr.td
+++ b/clang/include/clang/Basic/Attr.td
@@ -524,6 +524,10 @@ def ArcWeakrefUnavailable : InheritableAttr {
let Spellings = ["objc_arc_weak_reference_unavailable"];
}
+def ObjCSuppressAutosynthesis : InheritableAttr {
+ let Spellings = ["objc_suppress_autosynhesis"];
+}
+
def Unused : InheritableAttr {
let Spellings = ["unused"];
}
diff --git a/clang/include/clang/Sema/AttributeList.h b/clang/include/clang/Sema/AttributeList.h
index 0c64e2c4872..a0d7c4a5656 100644
--- a/clang/include/clang/Sema/AttributeList.h
+++ b/clang/include/clang/Sema/AttributeList.h
@@ -169,6 +169,7 @@ public:
AT_analyzer_noreturn,
AT_annotate,
AT_arc_weakref_unavailable,
+ AT_objc_suppress_autosynthesis,
AT_availability, // Clang-specific
AT_base_check,
AT_blocks,
diff --git a/clang/lib/Sema/AttributeList.cpp b/clang/lib/Sema/AttributeList.cpp
index 13a0edec28d..a8ccbb1f568 100644
--- a/clang/lib/Sema/AttributeList.cpp
+++ b/clang/lib/Sema/AttributeList.cpp
@@ -108,6 +108,7 @@ AttributeList::Kind AttributeList::getKind(const IdentifierInfo *Name) {
.Case("weak", AT_weak)
.Case("weakref", AT_weakref)
.Case("objc_arc_weak_reference_unavailable", AT_arc_weakref_unavailable)
+ .Case("objc_suppress_autosynthesis", AT_objc_suppress_autosynthesis)
.Case("pure", AT_pure)
.Case("mode", AT_mode)
.Case("used", AT_used)
diff --git a/clang/lib/Sema/SemaDeclAttr.cpp b/clang/lib/Sema/SemaDeclAttr.cpp
index 1626bf14b60..4074afee1cc 100644
--- a/clang/lib/Sema/SemaDeclAttr.cpp
+++ b/clang/lib/Sema/SemaDeclAttr.cpp
@@ -1579,6 +1579,18 @@ static void handleArcWeakrefUnavailableAttr(Sema &S, Decl *D,
Attr.getRange(), S.Context));
}
+static void handleObjCSuppressAutosynthesisAttr(Sema &S, Decl *D,
+ const AttributeList &Attr) {
+ unsigned NumArgs = Attr.getNumArgs();
+ if (NumArgs > 0) {
+ S.Diag(Attr.getLoc(), diag::err_attribute_too_many_arguments) << 0;
+ return;
+ }
+
+ D->addAttr(::new (S.Context) ObjCSuppressAutosynthesisAttr(
+ Attr.getRange(), S.Context));
+}
+
static void handleAvailabilityAttr(Sema &S, Decl *D,
const AttributeList &Attr) {
IdentifierInfo *Platform = Attr.getParameterName();
@@ -3603,6 +3615,9 @@ static void ProcessInheritableDeclAttr(Sema &S, Scope *scope, Decl *D,
case AttributeList::AT_arc_weakref_unavailable:
handleArcWeakrefUnavailableAttr (S, D, Attr);
break;
+ case AttributeList::AT_objc_suppress_autosynthesis:
+ handleObjCSuppressAutosynthesisAttr (S, D, Attr);
+ break;
case AttributeList::AT_unused: handleUnusedAttr (S, D, Attr); break;
case AttributeList::AT_returns_twice:
handleReturnsTwiceAttr(S, D, Attr);
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