r251874 - Stop back-patching 'readonly' Objective-C properties with 'readwrite' ones.
Douglas Gregor via cfe-commits
cfe-commits at lists.llvm.org
Fri Dec 4 11:19:25 PST 2015
> On Dec 4, 2015, at 11:17 AM, Nico Weber <thakis at chromium.org> wrote:
>
> I'm feeling good about this patch, so I landed it in r254750.
… which looks great, thanks!
- Doug
>
> On Thu, Dec 3, 2015 at 11:03 AM, Nico Weber <thakis at chromium.org <mailto:thakis at chromium.org>> wrote:
> r254622, thanks! The attached patch does the same for debug info. It doesn't completely restore the behavior before your change though: The DIObjCProperty now always goes with the redeclared line, while it didn't always do this before (see test). This seems like a progression though.
>
> On Thu, Dec 3, 2015 at 9:25 AM, Douglas Gregor <dgregor at apple.com <mailto:dgregor at apple.com>> wrote:
> This looks great, please commit. Thanks Nico!
>
> - Doug
>
>> On Dec 3, 2015, at 8:58 AM, Nico Weber <thakis at chromium.org <mailto:thakis at chromium.org>> wrote:
>>
>> Here's a version that gets that right.
>>
>> On Wed, Dec 2, 2015 at 8:16 PM, Douglas Gregor <dgregor at apple.com <mailto:dgregor at apple.com>> wrote:
>>
>>> On Dec 2, 2015, at 7:22 PM, Nico Weber <thakis at chromium.org <mailto:thakis at chromium.org>> wrote:
>>>
>>> It looks like one place in CGObjCMac.cpp still walks ObjCContainerDecl::properties(), while it probably should use collectPropertiesToImplement() which you extended to also find properites from known_extensions(). The attached patch has a fix that restores the observed prior behavior and a reduced lit test that makes sure this doesn't regress. Does this look right?
>>
>> Thank you for working on this!
>>
>> It’s close; I suggest testing the case where you have a readonly property in the class definition and a readwrite property with the same name in an extension, to make sure we get the correct metadata (readwrite, without duplicates).
>>
>>>
>>> If so, something like this would probably be needed in CGDebugInfo::CreateTypeDefinition(const ObjCInterfaceType *Ty) in CGDebugInfo.cpp too.
>>
>> Yep, there too.
>>
>> - Doug
>>
>>>
>>> On Tue, Dec 1, 2015 at 2:44 PM, Nico Weber <thakis at chromium.org <mailto:thakis at chromium.org>> wrote:
>>> Actually, looking at it again Foo derives from NSObject and shouldn't shadow anything. So maybe this isn't an intentional behavior change even?
>>>
>>> On Tue, Dec 1, 2015 at 2:39 PM, Nico Weber <thakis at chromium.org <mailto:thakis at chromium.org>> wrote:
>>> Hi Doug and Argyrios,
>>>
>>> this is breaking things for us. We have a class ObjCPropertyReleaser that automatically releases synthesized Objective-C properties marked retain or copy [1]. It does this by looking at the result of property_getAttributes() and looking for 'C' or '&' (copy or retain).
>>>
>>> After this change, this longer works. Here's a reduced example:
>>>
>>> $ cat main.mm <http://main.mm/>
>>> #import <Foundation/Foundation.h>
>>> #import <UIKit/UIKit.h>
>>>
>>> @interface Foo : NSObject
>>> @end
>>>
>>> @interface Foo ()
>>>
>>> @property(nonatomic, retain) UIView* contentView;
>>> @end
>>>
>>> @implementation Foo
>>> @synthesize contentView = _contentView;
>>> @end
>>>
>>> $ newclang++ -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator9.1.sdk -c main.mm <http://main.mm/> -o main.o && strings main.o | grep "&,N,V_contentView"
>>> # Nothing found.
>>>
>>> $ oldclang++ -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator9.1.sdk -c main.mm <http://main.mm/> -o main.o && strings main.o | grep "&,N,V_contentView"
>>> T@"UIView",&,N,V_contentView
>>> # ^ Found as expected
>>>
>>>
>>> I suppose this is intentional and the fix is to not shadow readonly superclass properties? Finding these is a bit difficult though as clang doesn't warn about this as far as I can tell.
>>>
>>> Thanks,
>>> Nico
>>>
>>> 1: https://code.google.com/p/chromium/codesearch#chromium/src/base/mac/objc_property_releaser.h <https://code.google.com/p/chromium/codesearch#chromium/src/base/mac/objc_property_releaser.h>
>>>
>>> On Mon, Nov 2, 2015 at 8:22 PM, Douglas Gregor via cfe-commits <cfe-commits at lists.llvm.org <mailto:cfe-commits at lists.llvm.org>> wrote:
>>> … and I forgot the most important part, which is that this is based on the good work of Mr. Kyrtzidis that I failed to acknowledge in the commit message.
>>>
>>> - Doug
>>>
>>>
>>> > On Nov 2, 2015, at 5:15 PM, Douglas Gregor via cfe-commits <cfe-commits at lists.llvm.org <mailto:cfe-commits at lists.llvm.org>> wrote:
>>> >
>>> > Author: dgregor
>>> > Date: Mon Nov 2 19:15:46 2015
>>> > New Revision: 251874
>>> >
>>> > URL: http://llvm.org/viewvc/llvm-project?rev=251874&view=rev <http://llvm.org/viewvc/llvm-project?rev=251874&view=rev>
>>> > Log:
>>> > Stop back-patching 'readonly' Objective-C properties with 'readwrite' ones.
>>> >
>>> > A 'readonly' Objective-C property declared in the primary class can
>>> > effectively be shadowed by a 'readwrite' property declared within an
>>> > extension of that class, so long as the types and attributes of the
>>> > two property declarations are compatible.
>>> >
>>> > Previously, this functionality was implemented by back-patching the
>>> > original 'readonly' property to make it 'readwrite', destroying source
>>> > information and causing some hideously redundant, incorrect
>>> > code. Simplify the implementation to express how this should actually
>>> > be modeled: as a separate property declaration in the extension that
>>> > shadows (via the name lookup rules) the declaration in the primary
>>> > class. While here, correct some broken Fix-Its, eliminate a pile of
>>> > redundant code, clean up the ARC migrator's handling of properties
>>> > declared in extensions, and fix debug info's naming of methods that
>>> > come from categories.
>>> >
>>> > A wonderous side effect of doing this write is that it eliminates the
>>> > "AddedObjCPropertyInClassExtension" method from the AST mutation
>>> > listener, which in turn eliminates the last place where we rewrite
>>> > entire declarations in a chained PCH file or a module file. This
>>> > change (which fixes rdar://problem/18475765 <>) will allow us to
>>> > eliminate the rewritten-decls logic from the serialization library,
>>> > and fixes a crash (rdar://problem/23247794 <>) illustrated by the
>>> > test/PCH/chain-categories.m example.
>>> >
>>> >
>>> > Modified:
>>> > cfe/trunk/include/clang/AST/ASTMutationListener.h
>>> > cfe/trunk/include/clang/AST/DeclObjC.h
>>> > cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td
>>> > cfe/trunk/include/clang/Sema/Sema.h
>>> > cfe/trunk/include/clang/Serialization/ASTWriter.h
>>> > cfe/trunk/lib/ARCMigrate/TransProperties.cpp
>>> > cfe/trunk/lib/AST/DeclObjC.cpp
>>> > cfe/trunk/lib/CodeGen/CGDebugInfo.cpp
>>> > cfe/trunk/lib/Frontend/MultiplexConsumer.cpp
>>> > cfe/trunk/lib/Sema/SemaDeclObjC.cpp
>>> > cfe/trunk/lib/Sema/SemaExprObjC.cpp
>>> > cfe/trunk/lib/Sema/SemaObjCProperty.cpp
>>> > cfe/trunk/lib/Serialization/ASTWriter.cpp
>>> > cfe/trunk/test/FixIt/atomic-property.m
>>> > cfe/trunk/test/Index/complete-kvc.m
>>> > cfe/trunk/test/Modules/ModuleDebugInfo.m
>>> > cfe/trunk/test/PCH/chain-categories.m
>>> > cfe/trunk/test/SemaObjC/atomoic-property-synnthesis-rules.m
>>> > cfe/trunk/test/SemaObjC/property-3.m
>>> > cfe/trunk/test/SemaObjC/property-in-class-extension-1.m
>>> > cfe/trunk/test/SemaObjCXX/property-invalid-type.mm <http://property-invalid-type.mm/>
>>> >
>>> > Modified: cfe/trunk/include/clang/AST/ASTMutationListener.h
>>> > URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/AST/ASTMutationListener.h?rev=251874&r1=251873&r2=251874&view=diff <http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/AST/ASTMutationListener.h?rev=251874&r1=251873&r2=251874&view=diff>
>>> > ==============================================================================
>>> > --- cfe/trunk/include/clang/AST/ASTMutationListener.h (original)
>>> > +++ cfe/trunk/include/clang/AST/ASTMutationListener.h Mon Nov 2 19:15:46 2015
>>> > @@ -92,18 +92,6 @@ public:
>>> > virtual void AddedObjCCategoryToInterface(const ObjCCategoryDecl *CatD,
>>> > const ObjCInterfaceDecl *IFD) {}
>>> >
>>> > - /// \brief A objc class extension redeclared or introduced a property.
>>> > - ///
>>> > - /// \param Prop the property in the class extension
>>> > - ///
>>> > - /// \param OrigProp the property from the original interface that was declared
>>> > - /// or null if the property was introduced.
>>> > - ///
>>> > - /// \param ClassExt the class extension.
>>> > - virtual void AddedObjCPropertyInClassExtension(const ObjCPropertyDecl *Prop,
>>> > - const ObjCPropertyDecl *OrigProp,
>>> > - const ObjCCategoryDecl *ClassExt) {}
>>> > -
>>> > /// \brief A declaration is marked used which was not previously marked used.
>>> > ///
>>> > /// \param D the declaration marked used
>>> >
>>> > Modified: cfe/trunk/include/clang/AST/DeclObjC.h
>>> > URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/AST/DeclObjC.h?rev=251874&r1=251873&r2=251874&view=diff <http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/AST/DeclObjC.h?rev=251874&r1=251873&r2=251874&view=diff>
>>> > ==============================================================================
>>> > --- cfe/trunk/include/clang/AST/DeclObjC.h (original)
>>> > +++ cfe/trunk/include/clang/AST/DeclObjC.h Mon Nov 2 19:15:46 2015
>>> > @@ -2524,11 +2524,6 @@ public:
>>> > PropertyAttributesAsWritten = PRVal;
>>> > }
>>> >
>>> > - void makeitReadWriteAttribute() {
>>> > - PropertyAttributes &= ~OBJC_PR_readonly;
>>> > - PropertyAttributes |= OBJC_PR_readwrite;
>>> > - }
>>> > -
>>> > // Helper methods for accessing attributes.
>>> >
>>> > /// isReadOnly - Return true iff the property has a setter.
>>> >
>>> > Modified: cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td
>>> > URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td?rev=251874&r1=251873&r2=251874&view=diff <http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td?rev=251874&r1=251873&r2=251874&view=diff>
>>> > ==============================================================================
>>> > --- cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td (original)
>>> > +++ cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td Mon Nov 2 19:15:46 2015
>>> > @@ -884,7 +884,8 @@ def err_property_type : Error<"property
>>> > def error_missing_property_context : Error<
>>> > "missing context for property implementation declaration">;
>>> > def error_bad_property_decl : Error<
>>> > - "property implementation must have its declaration in interface %0">;
>>> > + "property implementation must have its declaration in interface %0 or one of "
>>> > + "its extensions">;
>>> > def error_category_property : Error<
>>> > "property declared in category %0 cannot be implemented in "
>>> > "class implementation">;
>>> >
>>> > Modified: cfe/trunk/include/clang/Sema/Sema.h
>>> > URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Sema/Sema.h?rev=251874&r1=251873&r2=251874&view=diff <http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Sema/Sema.h?rev=251874&r1=251873&r2=251874&view=diff>
>>> > ==============================================================================
>>> > --- cfe/trunk/include/clang/Sema/Sema.h (original)
>>> > +++ cfe/trunk/include/clang/Sema/Sema.h Mon Nov 2 19:15:46 2015
>>> > @@ -3047,7 +3047,7 @@ public:
>>> > /// warning) when atomic property has one but not the other user-declared
>>> > /// setter or getter.
>>> > void AtomicPropertySetterGetterRules(ObjCImplDecl* IMPDecl,
>>> > - ObjCContainerDecl* IDecl);
>>> > + ObjCInterfaceDecl* IDecl);
>>> >
>>> > void DiagnoseOwningPropertyGetterSynthesis(const ObjCImplementationDecl *D);
>>> >
>>> >
>>> > Modified: cfe/trunk/include/clang/Serialization/ASTWriter.h
>>> > URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Serialization/ASTWriter.h?rev=251874&r1=251873&r2=251874&view=diff <http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Serialization/ASTWriter.h?rev=251874&r1=251873&r2=251874&view=diff>
>>> > ==============================================================================
>>> > --- cfe/trunk/include/clang/Serialization/ASTWriter.h (original)
>>> > +++ cfe/trunk/include/clang/Serialization/ASTWriter.h Mon Nov 2 19:15:46 2015
>>> > @@ -876,9 +876,6 @@ public:
>>> > void FunctionDefinitionInstantiated(const FunctionDecl *D) override;
>>> > void AddedObjCCategoryToInterface(const ObjCCategoryDecl *CatD,
>>> > const ObjCInterfaceDecl *IFD) override;
>>> > - void AddedObjCPropertyInClassExtension(const ObjCPropertyDecl *Prop,
>>> > - const ObjCPropertyDecl *OrigProp,
>>> > - const ObjCCategoryDecl *ClassExt) override;
>>> > void DeclarationMarkedUsed(const Decl *D) override;
>>> > void DeclarationMarkedOpenMPThreadPrivate(const Decl *D) override;
>>> > void RedefinedHiddenDefinition(const NamedDecl *D, Module *M) override;
>>> >
>>> > Modified: cfe/trunk/lib/ARCMigrate/TransProperties.cpp
>>> > URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/ARCMigrate/TransProperties.cpp?rev=251874&r1=251873&r2=251874&view=diff <http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/ARCMigrate/TransProperties.cpp?rev=251874&r1=251873&r2=251874&view=diff>
>>> > ==============================================================================
>>> > --- cfe/trunk/lib/ARCMigrate/TransProperties.cpp (original)
>>> > +++ cfe/trunk/lib/ARCMigrate/TransProperties.cpp Mon Nov 2 19:15:46 2015
>>> > @@ -96,6 +96,10 @@ public:
>>> >
>>> > collectProperties(iface, AtProps);
>>> >
>>> > + // Look through extensions.
>>> > + for (auto *Ext : iface->visible_extensions())
>>> > + collectProperties(Ext, AtProps);
>>> > +
>>> > typedef DeclContext::specific_decl_iterator<ObjCPropertyImplDecl>
>>> > prop_impl_iterator;
>>> > for (prop_impl_iterator
>>> > @@ -137,19 +141,6 @@ public:
>>> > Transaction Trans(Pass.TA);
>>> > rewriteProperty(props, atLoc);
>>> > }
>>> > -
>>> > - AtPropDeclsTy AtExtProps;
>>> > - // Look through extensions.
>>> > - for (auto *Ext : iface->visible_extensions())
>>> > - collectProperties(Ext, AtExtProps, &AtProps);
>>> > -
>>> > - for (AtPropDeclsTy::iterator
>>> > - I = AtExtProps.begin(), E = AtExtProps.end(); I != E; ++I) {
>>> > - SourceLocation atLoc = SourceLocation::getFromRawEncoding(I->first);
>>> > - PropsTy &props = I->second;
>>> > - Transaction Trans(Pass.TA);
>>> > - doActionForExtensionProp(props, atLoc);
>>> > - }
>>> > }
>>> >
>>> > private:
>>> > @@ -177,15 +168,6 @@ private:
>>> > }
>>> > }
>>> >
>>> > - void doActionForExtensionProp(PropsTy &props, SourceLocation atLoc) {
>>> > - llvm::DenseMap<IdentifierInfo *, PropActionKind>::iterator I;
>>> > - I = ActionOnProp.find(props[0].PropD->getIdentifier());
>>> > - if (I == ActionOnProp.end())
>>> > - return;
>>> > -
>>> > - doPropAction(I->second, props, atLoc, false);
>>> > - }
>>> > -
>>> > void rewriteProperty(PropsTy &props, SourceLocation atLoc) {
>>> > ObjCPropertyDecl::PropertyAttributeKind propAttrs = getPropertyAttrs(props);
>>> >
>>> >
>>> > Modified: cfe/trunk/lib/AST/DeclObjC.cpp
>>> > URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/DeclObjC.cpp?rev=251874&r1=251873&r2=251874&view=diff <http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/DeclObjC.cpp?rev=251874&r1=251873&r2=251874&view=diff>
>>> > ==============================================================================
>>> > --- cfe/trunk/lib/AST/DeclObjC.cpp (original)
>>> > +++ cfe/trunk/lib/AST/DeclObjC.cpp Mon Nov 2 19:15:46 2015
>>> > @@ -161,6 +161,15 @@ ObjCPropertyDecl::findPropertyDecl(const
>>> > return nullptr;
>>> > }
>>> >
>>> > + // If context is class, then lookup property in its extensions.
>>> > + // This comes before property is looked up in primary class.
>>> > + if (auto *IDecl = dyn_cast<ObjCInterfaceDecl>(DC)) {
>>> > + for (const auto *Ext : IDecl->known_extensions())
>>> > + if (ObjCPropertyDecl *PD = ObjCPropertyDecl::findPropertyDecl(Ext,
>>> > + propertyID))
>>> > + return PD;
>>> > + }
>>> > +
>>> > DeclContext::lookup_result R = DC->lookup(propertyID);
>>> > for (DeclContext::lookup_iterator I = R.begin(), E = R.end(); I != E;
>>> > ++I)
>>> > @@ -190,6 +199,15 @@ ObjCPropertyDecl *ObjCContainerDecl::Fin
>>> > if (Def->isHidden())
>>> > return nullptr;
>>> > }
>>> > +
>>> > + // Search the extensions of a class first; they override what's in
>>> > + // the class itself.
>>> > + if (const auto *ClassDecl = dyn_cast<ObjCInterfaceDecl>(this)) {
>>> > + for (const auto *Ext : ClassDecl->visible_extensions()) {
>>> > + if (auto *P = Ext->FindPropertyDeclaration(PropertyId))
>>> > + return P;
>>> > + }
>>> > + }
>>> >
>>> > if (ObjCPropertyDecl *PD =
>>> > ObjCPropertyDecl::findPropertyDecl(cast<DeclContext>(this), PropertyId))
>>> > @@ -207,7 +225,7 @@ ObjCPropertyDecl *ObjCContainerDecl::Fin
>>> > }
>>> > case Decl::ObjCInterface: {
>>> > const ObjCInterfaceDecl *OID = cast<ObjCInterfaceDecl>(this);
>>> > - // Look through categories (but not extensions).
>>> > + // Look through categories (but not extensions; they were handled above).
>>> > for (const auto *Cat : OID->visible_categories()) {
>>> > if (!Cat->IsClassExtension())
>>> > if (ObjCPropertyDecl *P = Cat->FindPropertyDeclaration(PropertyId))
>>> > @@ -327,6 +345,13 @@ void ObjCInterfaceDecl::collectPropertie
>>> > PM[Prop->getIdentifier()] = Prop;
>>> > PO.push_back(Prop);
>>> > }
>>> > + for (const auto *Ext : known_extensions()) {
>>> > + const ObjCCategoryDecl *ClassExt = Ext;
>>> > + for (auto *Prop : ClassExt->properties()) {
>>> > + PM[Prop->getIdentifier()] = Prop;
>>> > + PO.push_back(Prop);
>>> > + }
>>> > + }
>>> > for (const auto *PI : all_referenced_protocols())
>>> > PI->collectPropertiesToImplement(PM, PO);
>>> > // Note, the properties declared only in class extensions are still copied
>>> > @@ -1182,18 +1207,47 @@ ObjCMethodDecl::findPropertyDecl(bool Ch
>>> >
>>> > if (isPropertyAccessor()) {
>>> > const ObjCContainerDecl *Container = cast<ObjCContainerDecl>(getParent());
>>> > - // If container is class extension, find its primary class.
>>> > - if (const ObjCCategoryDecl *CatDecl = dyn_cast<ObjCCategoryDecl>(Container))
>>> > - if (CatDecl->IsClassExtension())
>>> > - Container = CatDecl->getClassInterface();
>>> > -
>>> > bool IsGetter = (NumArgs == 0);
>>> >
>>> > - for (const auto *I : Container->properties()) {
>>> > - Selector NextSel = IsGetter ? I->getGetterName()
>>> > - : I->getSetterName();
>>> > - if (NextSel == Sel)
>>> > - return I;
>>> > + /// Local function that attempts to find a matching property within the
>>> > + /// given Objective-C container.
>>> > + auto findMatchingProperty =
>>> > + [&](const ObjCContainerDecl *Container) -> const ObjCPropertyDecl * {
>>> > +
>>> > + for (const auto *I : Container->properties()) {
>>> > + Selector NextSel = IsGetter ? I->getGetterName()
>>> > + : I->getSetterName();
>>> > + if (NextSel == Sel)
>>> > + return I;
>>> > + }
>>> > +
>>> > + return nullptr;
>>> > + };
>>> > +
>>> > + // Look in the container we were given.
>>> > + if (const auto *Found = findMatchingProperty(Container))
>>> > + return Found;
>>> > +
>>> > + // If we're in a category or extension, look in the main class.
>>> > + const ObjCInterfaceDecl *ClassDecl = nullptr;
>>> > + if (const auto *Category = dyn_cast<ObjCCategoryDecl>(Container)) {
>>> > + ClassDecl = Category->getClassInterface();
>>> > + if (const auto *Found = findMatchingProperty(ClassDecl))
>>> > + return Found;
>>> > + } else {
>>> > + // Determine whether the container is a class.
>>> > + ClassDecl = dyn_cast<ObjCInterfaceDecl>(Container);
>>> > + }
>>> > +
>>> > + // If we have a class, check its visible extensions.
>>> > + if (ClassDecl) {
>>> > + for (const auto *Ext : ClassDecl->visible_extensions()) {
>>> > + if (Ext == Container)
>>> > + continue;
>>> > +
>>> > + if (const auto *Found = findMatchingProperty(Ext))
>>> > + return Found;
>>> > + }
>>> > }
>>> >
>>> > llvm_unreachable("Marked as a property accessor but no property found!");
>>> >
>>> > Modified: cfe/trunk/lib/CodeGen/CGDebugInfo.cpp
>>> > URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGDebugInfo.cpp?rev=251874&r1=251873&r2=251874&view=diff <http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGDebugInfo.cpp?rev=251874&r1=251873&r2=251874&view=diff>
>>> > ==============================================================================
>>> > --- cfe/trunk/lib/CodeGen/CGDebugInfo.cpp (original)
>>> > +++ cfe/trunk/lib/CodeGen/CGDebugInfo.cpp Mon Nov 2 19:15:46 2015
>>> > @@ -216,6 +216,13 @@ StringRef CGDebugInfo::getObjCMethodName
>>> > } else if (const ObjCInterfaceDecl *OID =
>>> > dyn_cast<const ObjCInterfaceDecl>(DC)) {
>>> > OS << OID->getName();
>>> > + } else if (const ObjCCategoryDecl *OC = dyn_cast<ObjCCategoryDecl>(DC)) {
>>> > + if (OC->IsClassExtension()) {
>>> > + OS << OC->getClassInterface()->getName();
>>> > + } else {
>>> > + OS << ((const NamedDecl *)OC)->getIdentifier()->getNameStart() << '('
>>> > + << OC->getIdentifier()->getNameStart() << ')';
>>> > + }
>>> > } else if (const ObjCCategoryImplDecl *OCD =
>>> > dyn_cast<const ObjCCategoryImplDecl>(DC)) {
>>> > OS << ((const NamedDecl *)OCD)->getIdentifier()->getNameStart() << '('
>>> >
>>> > Modified: cfe/trunk/lib/Frontend/MultiplexConsumer.cpp
>>> > URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Frontend/MultiplexConsumer.cpp?rev=251874&r1=251873&r2=251874&view=diff <http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Frontend/MultiplexConsumer.cpp?rev=251874&r1=251873&r2=251874&view=diff>
>>> > ==============================================================================
>>> > --- cfe/trunk/lib/Frontend/MultiplexConsumer.cpp (original)
>>> > +++ cfe/trunk/lib/Frontend/MultiplexConsumer.cpp Mon Nov 2 19:15:46 2015
>>> > @@ -122,9 +122,6 @@ public:
>>> > void AddedObjCCategoryToInterface(const ObjCCategoryDecl *CatD,
>>> > const ObjCInterfaceDecl *IFD) override;
>>> > void FunctionDefinitionInstantiated(const FunctionDecl *D) override;
>>> > - void AddedObjCPropertyInClassExtension(const ObjCPropertyDecl *Prop,
>>> > - const ObjCPropertyDecl *OrigProp,
>>> > - const ObjCCategoryDecl *ClassExt) override;
>>> > void DeclarationMarkedUsed(const Decl *D) override;
>>> > void DeclarationMarkedOpenMPThreadPrivate(const Decl *D) override;
>>> > void RedefinedHiddenDefinition(const NamedDecl *D, Module *M) override;
>>> > @@ -207,13 +204,6 @@ void MultiplexASTMutationListener::Funct
>>> > for (auto &Listener : Listeners)
>>> > Listener->FunctionDefinitionInstantiated(D);
>>> > }
>>> > -void MultiplexASTMutationListener::AddedObjCPropertyInClassExtension(
>>> > - const ObjCPropertyDecl *Prop,
>>> > - const ObjCPropertyDecl *OrigProp,
>>> > - const ObjCCategoryDecl *ClassExt) {
>>> > - for (size_t i = 0, e = Listeners.size(); i != e; ++i)
>>> > - Listeners[i]->AddedObjCPropertyInClassExtension(Prop, OrigProp, ClassExt);
>>> > -}
>>> > void MultiplexASTMutationListener::DeclarationMarkedUsed(const Decl *D) {
>>> > for (size_t i = 0, e = Listeners.size(); i != e; ++i)
>>> > Listeners[i]->DeclarationMarkedUsed(D);
>>> >
>>> > Modified: cfe/trunk/lib/Sema/SemaDeclObjC.cpp
>>> > URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaDeclObjC.cpp?rev=251874&r1=251873&r2=251874&view=diff <http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaDeclObjC.cpp?rev=251874&r1=251873&r2=251874&view=diff>
>>> > ==============================================================================
>>> > --- cfe/trunk/lib/Sema/SemaDeclObjC.cpp (original)
>>> > +++ cfe/trunk/lib/Sema/SemaDeclObjC.cpp Mon Nov 2 19:15:46 2015
>>> > @@ -2844,6 +2844,20 @@ void Sema::ImplMethodsVsClassMethods(Sco
>>> > for (const auto *I : IMPDecl->instance_methods())
>>> > InsMap.insert(I->getSelector());
>>> >
>>> > + // Add the selectors for getters/setters of @dynamic properties.
>>> > + for (const auto *PImpl : IMPDecl->property_impls()) {
>>> > + // We only care about @dynamic implementations.
>>> > + if (PImpl->getPropertyImplementation() != ObjCPropertyImplDecl::Dynamic)
>>> > + continue;
>>> > +
>>> > + const auto *P = PImpl->getPropertyDecl();
>>> > + if (!P) continue;
>>> > +
>>> > + InsMap.insert(P->getGetterName());
>>> > + if (!P->getSetterName().isNull())
>>> > + InsMap.insert(P->getSetterName());
>>> > + }
>>> > +
>>> > // Check and see if properties declared in the interface have either 1)
>>> > // an implementation or 2) there is a @synthesize/@dynamic implementation
>>> > // of the property in the @implementation.
>>> >
>>> > Modified: cfe/trunk/lib/Sema/SemaExprObjC.cpp
>>> > URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaExprObjC.cpp?rev=251874&r1=251873&r2=251874&view=diff <http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaExprObjC.cpp?rev=251874&r1=251873&r2=251874&view=diff>
>>> > ==============================================================================
>>> > --- cfe/trunk/lib/Sema/SemaExprObjC.cpp (original)
>>> > +++ cfe/trunk/lib/Sema/SemaExprObjC.cpp Mon Nov 2 19:15:46 2015
>>> > @@ -1779,8 +1779,7 @@ HandleExprPropertyRefExpr(const ObjCObje
>>> > diag::err_property_not_found_forward_class,
>>> > MemberName, BaseRange))
>>> > return ExprError();
>>> > -
>>> > - // Search for a declared property first.
>>> > +
>>> > if (ObjCPropertyDecl *PD = IFace->FindPropertyDeclaration(Member)) {
>>> > // Check whether we can reference this property.
>>> > if (DiagnoseUseOfDecl(PD, MemberLoc))
>>> >
>>> > Modified: cfe/trunk/lib/Sema/SemaObjCProperty.cpp
>>> > URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaObjCProperty.cpp?rev=251874&r1=251873&r2=251874&view=diff <http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaObjCProperty.cpp?rev=251874&r1=251873&r2=251874&view=diff>
>>> > ==============================================================================
>>> > --- cfe/trunk/lib/Sema/SemaObjCProperty.cpp (original)
>>> > +++ cfe/trunk/lib/Sema/SemaObjCProperty.cpp Mon Nov 2 19:15:46 2015
>>> > @@ -262,8 +262,12 @@ Decl *Sema::ActOnProperty(Scope *S, Sour
>>> > }
>>> > }
>>> > } else if (ObjCCategoryDecl *Cat = dyn_cast<ObjCCategoryDecl>(ClassDecl)) {
>>> > - for (auto *P : Cat->protocols())
>>> > - CheckPropertyAgainstProtocol(*this, Res, P, KnownProtos);
>>> > + // We don't check if class extension. Because properties in class extension
>>> > + // are meant to override some of the attributes and checking has already done
>>> > + // when property in class extension is constructed.
>>> > + if (!Cat->IsClassExtension())
>>> > + for (auto *P : Cat->protocols())
>>> > + CheckPropertyAgainstProtocol(*this, Res, P, KnownProtos);
>>> > } else {
>>> > ObjCProtocolDecl *Proto = cast<ObjCProtocolDecl>(ClassDecl);
>>> > for (auto *P : Proto->protocols())
>>> > @@ -355,46 +359,6 @@ Sema::HandlePropertyInClassExtension(Sco
>>> > IdentifierInfo *PropertyId = FD.D.getIdentifier();
>>> > ObjCInterfaceDecl *CCPrimary = CDecl->getClassInterface();
>>> >
>>> > - if (CCPrimary) {
>>> > - // Check for duplicate declaration of this property in current and
>>> > - // other class extensions.
>>> > - for (const auto *Ext : CCPrimary->known_extensions()) {
>>> > - if (ObjCPropertyDecl *prevDecl
>>> > - = ObjCPropertyDecl::findPropertyDecl(Ext, PropertyId)) {
>>> > - Diag(AtLoc, diag::err_duplicate_property);
>>> > - Diag(prevDecl->getLocation(), diag::note_property_declare);
>>> > - return nullptr;
>>> > - }
>>> > - }
>>> > - }
>>> > -
>>> > - // Create a new ObjCPropertyDecl with the DeclContext being
>>> > - // the class extension.
>>> > - // FIXME. We should really be using CreatePropertyDecl for this.
>>> > - ObjCPropertyDecl *PDecl =
>>> > - ObjCPropertyDecl::Create(Context, DC, FD.D.getIdentifierLoc(),
>>> > - PropertyId, AtLoc, LParenLoc, T, TSI);
>>> > - PDecl->setPropertyAttributesAsWritten(
>>> > - makePropertyAttributesAsWritten(AttributesAsWritten));
>>> > - if (Attributes & ObjCDeclSpec::DQ_PR_readonly)
>>> > - PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_readonly);
>>> > - if (Attributes & ObjCDeclSpec::DQ_PR_readwrite)
>>> > - PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_readwrite);
>>> > - if (Attributes & ObjCDeclSpec::DQ_PR_nonatomic)
>>> > - PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_nonatomic);
>>> > - if (Attributes & ObjCDeclSpec::DQ_PR_atomic)
>>> > - PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_atomic);
>>> > - if (Attributes & ObjCDeclSpec::DQ_PR_nullability)
>>> > - PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_nullability);
>>> > - if (Attributes & ObjCDeclSpec::DQ_PR_null_resettable)
>>> > - PDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_null_resettable);
>>> > -
>>> > - // Set setter/getter selector name. Needed later.
>>> > - PDecl->setGetterName(GetterSel);
>>> > - PDecl->setSetterName(SetterSel);
>>> > - ProcessDeclAttributes(S, PDecl, FD.D);
>>> > - DC->addDecl(PDecl);
>>> > -
>>> > // We need to look in the @interface to see if the @property was
>>> > // already declared.
>>> > if (!CCPrimary) {
>>> > @@ -403,32 +367,35 @@ Sema::HandlePropertyInClassExtension(Sco
>>> > return nullptr;
>>> > }
>>> >
>>> > - // Find the property in continuation class's primary class only.
>>> > + // Find the property in the extended class's primary class or
>>> > + // extensions.
>>> > ObjCPropertyDecl *PIDecl =
>>> > CCPrimary->FindPropertyVisibleInPrimaryClass(PropertyId);
>>> >
>>> > + // If we found a property in an extension, complain.
>>> > + if (PIDecl && isa<ObjCCategoryDecl>(PIDecl->getDeclContext())) {
>>> > + Diag(AtLoc, diag::err_duplicate_property);
>>> > + Diag(PIDecl->getLocation(), diag::note_property_declare);
>>> > + return nullptr;
>>> > + }
>>> > +
>>> > + // Create a new ObjCPropertyDecl with the DeclContext being
>>> > + // the class extension.
>>> > + ObjCPropertyDecl *PDecl = CreatePropertyDecl(S, CDecl, AtLoc, LParenLoc,
>>> > + FD, GetterSel, SetterSel,
>>> > + isAssign, isReadWrite,
>>> > + Attributes, AttributesAsWritten,
>>> > + T, TSI, MethodImplKind, DC);
>>> > +
>>> > + // If there was no declaration of a property with the same name in
>>> > + // the primary class, we're done.
>>> > if (!PIDecl) {
>>> > - // No matching property found in the primary class. Just fall thru
>>> > - // and add property to continuation class's primary class.
>>> > - ObjCPropertyDecl *PrimaryPDecl =
>>> > - CreatePropertyDecl(S, CCPrimary, AtLoc, LParenLoc,
>>> > - FD, GetterSel, SetterSel, isAssign, isReadWrite,
>>> > - Attributes,AttributesAsWritten, T, TSI, MethodImplKind,
>>> > - DC);
>>> > -
>>> > - // A case of continuation class adding a new property in the class. This
>>> > - // is not what it was meant for. However, gcc supports it and so should we.
>>> > - // Make sure setter/getters are declared here.
>>> > - ProcessPropertyDecl(PrimaryPDecl, CCPrimary,
>>> > + ProcessPropertyDecl(PDecl, CDecl,
>>> > /* redeclaredProperty = */ nullptr,
>>> > /* lexicalDC = */ CDecl);
>>> > - PDecl->setGetterMethodDecl(PrimaryPDecl->getGetterMethodDecl());
>>> > - PDecl->setSetterMethodDecl(PrimaryPDecl->getSetterMethodDecl());
>>> > - if (ASTMutationListener *L = Context.getASTMutationListener())
>>> > - L->AddedObjCPropertyInClassExtension(PrimaryPDecl, /*OrigProp=*/nullptr,
>>> > - CDecl);
>>> > - return PrimaryPDecl;
>>> > + return PDecl;
>>> > }
>>> > +
>>> > if (!Context.hasSameType(PIDecl->getType(), PDecl->getType())) {
>>> > bool IncompatibleObjC = false;
>>> > QualType ConvertedType;
>>> > @@ -451,82 +418,12 @@ Sema::HandlePropertyInClassExtension(Sco
>>> > return nullptr;
>>> > }
>>> > }
>>> > -
>>> > - // The property 'PIDecl's readonly attribute will be over-ridden
>>> > - // with continuation class's readwrite property attribute!
>>> > +
>>> > + // A readonly property declared in the primary class can be refined
>>> > + // by adding a rewrite property within an extension.
>>> > + // Anything else is an error.
>>> > unsigned PIkind = PIDecl->getPropertyAttributesAsWritten();
>>> > - if (isReadWrite && (PIkind & ObjCPropertyDecl::OBJC_PR_readonly)) {
>>> > - PIkind &= ~ObjCPropertyDecl::OBJC_PR_readonly;
>>> > - PIkind |= ObjCPropertyDecl::OBJC_PR_readwrite;
>>> > - PIkind |= deducePropertyOwnershipFromType(*this, PIDecl->getType());
>>> > - unsigned ClassExtensionMemoryModel = getOwnershipRule(Attributes);
>>> > - unsigned PrimaryClassMemoryModel = getOwnershipRule(PIkind);
>>> > - if (PrimaryClassMemoryModel && ClassExtensionMemoryModel &&
>>> > - (PrimaryClassMemoryModel != ClassExtensionMemoryModel)) {
>>> > - Diag(AtLoc, diag::warn_property_attr_mismatch);
>>> > - Diag(PIDecl->getLocation(), diag::note_property_declare);
>>> > - }
>>> > - else if (getLangOpts().ObjCAutoRefCount) {
>>> > - QualType PrimaryPropertyQT =
>>> > - Context.getCanonicalType(PIDecl->getType()).getUnqualifiedType();
>>> > - if (isa<ObjCObjectPointerType>(PrimaryPropertyQT)) {
>>> > - bool PropertyIsWeak = ((PIkind & ObjCPropertyDecl::OBJC_PR_weak) != 0);
>>> > - Qualifiers::ObjCLifetime PrimaryPropertyLifeTime =
>>> > - PrimaryPropertyQT.getObjCLifetime();
>>> > - if (PrimaryPropertyLifeTime == Qualifiers::OCL_None &&
>>> > - (Attributes & ObjCDeclSpec::DQ_PR_weak) &&
>>> > - !PropertyIsWeak) {
>>> > - Diag(AtLoc, diag::warn_property_implicitly_mismatched);
>>> > - Diag(PIDecl->getLocation(), diag::note_property_declare);
>>> > - }
>>> > - }
>>> > - }
>>> > -
>>> > - DeclContext *DC = cast<DeclContext>(CCPrimary);
>>> > - if (!ObjCPropertyDecl::findPropertyDecl(DC,
>>> > - PIDecl->getDeclName().getAsIdentifierInfo())) {
>>> > - // In mrr mode, 'readwrite' property must have an explicit
>>> > - // memory attribute. If none specified, select the default (assign).
>>> > - if (!getLangOpts().ObjCAutoRefCount) {
>>> > - if (!(PIkind & (ObjCDeclSpec::DQ_PR_assign |
>>> > - ObjCDeclSpec::DQ_PR_retain |
>>> > - ObjCDeclSpec::DQ_PR_strong |
>>> > - ObjCDeclSpec::DQ_PR_copy |
>>> > - ObjCDeclSpec::DQ_PR_unsafe_unretained |
>>> > - ObjCDeclSpec::DQ_PR_weak)))
>>> > - PIkind |= ObjCPropertyDecl::OBJC_PR_assign;
>>> > - }
>>> > -
>>> > - // Protocol is not in the primary class. Must build one for it.
>>> > - ObjCDeclSpec ProtocolPropertyODS;
>>> > - // FIXME. Assuming that ObjCDeclSpec::ObjCPropertyAttributeKind
>>> > - // and ObjCPropertyDecl::PropertyAttributeKind have identical
>>> > - // values. Should consolidate both into one enum type.
>>> > - ProtocolPropertyODS.
>>> > - setPropertyAttributes((ObjCDeclSpec::ObjCPropertyAttributeKind)
>>> > - PIkind);
>>> > - // Must re-establish the context from class extension to primary
>>> > - // class context.
>>> > - ContextRAII SavedContext(*this, CCPrimary);
>>> > -
>>> > - Decl *ProtocolPtrTy =
>>> > - ActOnProperty(S, AtLoc, LParenLoc, FD, ProtocolPropertyODS,
>>> > - PIDecl->getGetterName(),
>>> > - PIDecl->getSetterName(),
>>> > - isOverridingProperty,
>>> > - MethodImplKind,
>>> > - /* lexicalDC = */ CDecl);
>>> > - PIDecl = cast<ObjCPropertyDecl>(ProtocolPtrTy);
>>> > - }
>>> > - PIDecl->makeitReadWriteAttribute();
>>> > - if (Attributes & ObjCDeclSpec::DQ_PR_retain)
>>> > - PIDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_retain);
>>> > - if (Attributes & ObjCDeclSpec::DQ_PR_strong)
>>> > - PIDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_strong);
>>> > - if (Attributes & ObjCDeclSpec::DQ_PR_copy)
>>> > - PIDecl->setPropertyAttributes(ObjCPropertyDecl::OBJC_PR_copy);
>>> > - PIDecl->setSetterName(SetterSel);
>>> > - } else {
>>> > + if (!(isReadWrite && (PIkind & ObjCPropertyDecl::OBJC_PR_readonly))) {
>>> > // Tailor the diagnostics for the common case where a readwrite
>>> > // property is declared both in the @interface and the continuation.
>>> > // This is a common error where the user often intended the original
>>> > @@ -541,13 +438,53 @@ Sema::HandlePropertyInClassExtension(Sco
>>> > Diag(PIDecl->getLocation(), diag::note_property_declare);
>>> > return nullptr;
>>> > }
>>> > +
>>> > + PIkind &= ~ObjCPropertyDecl::OBJC_PR_readonly;
>>> > + PIkind |= ObjCPropertyDecl::OBJC_PR_readwrite;
>>> > + PIkind |= deducePropertyOwnershipFromType(*this, PIDecl->getType());
>>> > + unsigned ClassExtensionMemoryModel = getOwnershipRule(Attributes);
>>> > + unsigned PrimaryClassMemoryModel = getOwnershipRule(PIkind);
>>> > + if (PrimaryClassMemoryModel && ClassExtensionMemoryModel &&
>>> > + (PrimaryClassMemoryModel != ClassExtensionMemoryModel)) {
>>> > + Diag(AtLoc, diag::warn_property_attr_mismatch);
>>> > + Diag(PIDecl->getLocation(), diag::note_property_declare);
>>> > + } else if (getLangOpts().ObjCAutoRefCount) {
>>> > + QualType PrimaryPropertyQT =
>>> > + Context.getCanonicalType(PIDecl->getType()).getUnqualifiedType();
>>> > + if (isa<ObjCObjectPointerType>(PrimaryPropertyQT)) {
>>> > + bool PropertyIsWeak = ((PIkind & ObjCPropertyDecl::OBJC_PR_weak) != 0);
>>> > + Qualifiers::ObjCLifetime PrimaryPropertyLifeTime =
>>> > + PrimaryPropertyQT.getObjCLifetime();
>>> > + if (PrimaryPropertyLifeTime == Qualifiers::OCL_None &&
>>> > + (Attributes & ObjCDeclSpec::DQ_PR_weak) &&
>>> > + !PropertyIsWeak) {
>>> > + Diag(AtLoc, diag::warn_property_implicitly_mismatched);
>>> > + Diag(PIDecl->getLocation(), diag::note_property_declare);
>>> > + }
>>> > + }
>>> > + }
>>> > +
>>> > + // Check that atomicity of property in class extension matches the previous
>>> > + // declaration.
>>> > + unsigned PDeclAtomicity =
>>> > + PDecl->getPropertyAttributes() & (ObjCDeclSpec::DQ_PR_atomic | ObjCDeclSpec::DQ_PR_nonatomic);
>>> > + unsigned PIDeclAtomicity =
>>> > + PIDecl->getPropertyAttributes() & (ObjCDeclSpec::DQ_PR_atomic | ObjCDeclSpec::DQ_PR_nonatomic);
>>> > + if (PDeclAtomicity != PIDeclAtomicity) {
>>> > + bool PDeclAtomic = (!PDeclAtomicity || PDeclAtomicity & ObjCDeclSpec::DQ_PR_atomic);
>>> > + bool PIDeclAtomic = (!PIDeclAtomicity || PIDeclAtomicity & ObjCDeclSpec::DQ_PR_atomic);
>>> > + if (PDeclAtomic != PIDeclAtomic) {
>>> > + Diag(PDecl->getLocation(), diag::warn_property_attribute)
>>> > + << PDecl->getDeclName() << "atomic"
>>> > + << cast<ObjCContainerDecl>(PIDecl->getDeclContext())->getName();
>>> > + Diag(PIDecl->getLocation(), diag::note_property_declare);
>>> > + }
>>> > + }
>>> > +
>>> > *isOverridingProperty = true;
>>> > - // Make sure setter decl is synthesized, and added to primary class's list.
>>> > - ProcessPropertyDecl(PIDecl, CCPrimary, PDecl, CDecl);
>>> > - PDecl->setGetterMethodDecl(PIDecl->getGetterMethodDecl());
>>> > - PDecl->setSetterMethodDecl(PIDecl->getSetterMethodDecl());
>>> > - if (ASTMutationListener *L = Context.getASTMutationListener())
>>> > - L->AddedObjCPropertyInClassExtension(PDecl, PIDecl, CDecl);
>>> > +
>>> > + // Make sure setter decl is synthesized, and added to continuation class's list.
>>> > + ProcessPropertyDecl(PDecl, CDecl, PIDecl, CDecl);
>>> > return PDecl;
>>> > }
>>> >
>>> > @@ -1480,6 +1417,11 @@ static void CollectImmediateProperties(O
>>> > if (ObjCInterfaceDecl *IDecl = dyn_cast<ObjCInterfaceDecl>(CDecl)) {
>>> > for (auto *Prop : IDecl->properties())
>>> > PropMap[Prop->getIdentifier()] = Prop;
>>> > +
>>> > + // Collect the properties from visible extensions.
>>> > + for (auto *Ext : IDecl->visible_extensions())
>>> > + CollectImmediateProperties(Ext, PropMap, SuperPropMap, IncludeProtocols);
>>> > +
>>> > if (IncludeProtocols) {
>>> > // Scan through class's protocols.
>>> > for (auto *PI : IDecl->all_referenced_protocols())
>>> > @@ -1487,9 +1429,8 @@ static void CollectImmediateProperties(O
>>> > }
>>> > }
>>> > if (ObjCCategoryDecl *CATDecl = dyn_cast<ObjCCategoryDecl>(CDecl)) {
>>> > - if (!CATDecl->IsClassExtension())
>>> > - for (auto *Prop : CATDecl->properties())
>>> > - PropMap[Prop->getIdentifier()] = Prop;
>>> > + for (auto *Prop : CATDecl->properties())
>>> > + PropMap[Prop->getIdentifier()] = Prop;
>>> > if (IncludeProtocols) {
>>> > // Scan through class's protocols.
>>> > for (auto *PI : CATDecl->protocols())
>>> > @@ -1549,6 +1490,14 @@ Sema::IvarBacksCurrentMethodAccessor(Obj
>>> > (Property->getPropertyIvarDecl() == IV))
>>> > return true;
>>> > }
>>> > + // Also look up property declaration in class extension whose one of its
>>> > + // accessors is implemented by this method.
>>> > + for (const auto *Ext : IFace->known_extensions())
>>> > + for (const auto *Property : Ext->properties())
>>> > + if ((Property->getGetterName() == IMD->getSelector() ||
>>> > + Property->getSetterName() == IMD->getSelector()) &&
>>> > + (Property->getPropertyIvarDecl() == IV))
>>> > + return true;
>>> > return false;
>>> > }
>>> >
>>> > @@ -1833,11 +1782,20 @@ void Sema::diagnoseNullResettableSynthes
>>> >
>>> > void
>>> > Sema::AtomicPropertySetterGetterRules (ObjCImplDecl* IMPDecl,
>>> > - ObjCContainerDecl* IDecl) {
>>> > + ObjCInterfaceDecl* IDecl) {
>>> > // Rules apply in non-GC mode only
>>> > if (getLangOpts().getGC() != LangOptions::NonGC)
>>> > return;
>>> > - for (const auto *Property : IDecl->properties()) {
>>> > + ObjCContainerDecl::PropertyMap PM;
>>> > + for (auto *Prop : IDecl->properties())
>>> > + PM[Prop->getIdentifier()] = Prop;
>>> > + for (const auto *Ext : IDecl->known_extensions())
>>> > + for (auto *Prop : Ext->properties())
>>> > + PM[Prop->getIdentifier()] = Prop;
>>> > +
>>> > + for (ObjCContainerDecl::PropertyMap::iterator I = PM.begin(), E = PM.end();
>>> > + I != E; ++I) {
>>> > + const ObjCPropertyDecl *Property = I->second;
>>> > ObjCMethodDecl *GetterMethod = nullptr;
>>> > ObjCMethodDecl *SetterMethod = nullptr;
>>> > bool LookedUpGetterSetter = false;
>>> > @@ -1884,30 +1842,23 @@ Sema::AtomicPropertySetterGetterRules (O
>>> > << Property->getIdentifier() << (GetterMethod != nullptr)
>>> > << (SetterMethod != nullptr);
>>> > // fixit stuff.
>>> > - if (!AttributesAsWritten) {
>>> > - if (Property->getLParenLoc().isValid()) {
>>> > - // @property () ... case.
>>> > - SourceRange PropSourceRange(Property->getAtLoc(),
>>> > - Property->getLParenLoc());
>>> > - Diag(Property->getLocation(), diag::note_atomic_property_fixup_suggest) <<
>>> > - FixItHint::CreateReplacement(PropSourceRange, "@property (nonatomic");
>>> > - }
>>> > - else {
>>> > - //@property id etc.
>>> > - SourceLocation endLoc =
>>> > - Property->getTypeSourceInfo()->getTypeLoc().getBeginLoc();
>>> > - endLoc = endLoc.getLocWithOffset(-1);
>>> > - SourceRange PropSourceRange(Property->getAtLoc(), endLoc);
>>> > - Diag(Property->getLocation(), diag::note_atomic_property_fixup_suggest) <<
>>> > - FixItHint::CreateReplacement(PropSourceRange, "@property (nonatomic) ");
>>> > - }
>>> > - }
>>> > - else if (!(AttributesAsWritten & ObjCPropertyDecl::OBJC_PR_atomic)) {
>>> > + if (Property->getLParenLoc().isValid() &&
>>> > + !(AttributesAsWritten & ObjCPropertyDecl::OBJC_PR_atomic)) {
>>> > // @property () ... case.
>>> > - SourceLocation endLoc = Property->getLParenLoc();
>>> > - SourceRange PropSourceRange(Property->getAtLoc(), endLoc);
>>> > - Diag(Property->getLocation(), diag::note_atomic_property_fixup_suggest) <<
>>> > - FixItHint::CreateReplacement(PropSourceRange, "@property (nonatomic, ");
>>> > + SourceLocation AfterLParen =
>>> > + getLocForEndOfToken(Property->getLParenLoc());
>>> > + StringRef NonatomicStr = AttributesAsWritten? "nonatomic, "
>>> > + : "nonatomic";
>>> > + Diag(Property->getLocation(),
>>> > + diag::note_atomic_property_fixup_suggest)
>>> > + << FixItHint::CreateInsertion(AfterLParen, NonatomicStr);
>>> > + } else if (Property->getLParenLoc().isInvalid()) {
>>> > + //@property id etc.
>>> > + SourceLocation startLoc =
>>> > + Property->getTypeSourceInfo()->getTypeLoc().getBeginLoc();
>>> > + Diag(Property->getLocation(),
>>> > + diag::note_atomic_property_fixup_suggest)
>>> > + << FixItHint::CreateInsertion(startLoc, "(nonatomic) ");
>>> > }
>>> > else
>>> > Diag(MethodLoc, diag::note_atomic_property_fixup_suggest);
>>> > @@ -2035,7 +1986,20 @@ void Sema::ProcessPropertyDecl(ObjCPrope
>>> > return;
>>> >
>>> > GetterMethod = CD->getInstanceMethod(property->getGetterName());
>>> > + // if setter or getter is not found in class extension, it might be
>>> > + // in the primary class.
>>> > + if (!GetterMethod)
>>> > + if (const ObjCCategoryDecl *CatDecl = dyn_cast<ObjCCategoryDecl>(CD))
>>> > + if (CatDecl->IsClassExtension())
>>> > + GetterMethod = CatDecl->getClassInterface()->
>>> > + getInstanceMethod(property->getGetterName());
>>> > +
>>> > SetterMethod = CD->getInstanceMethod(property->getSetterName());
>>> > + if (!SetterMethod)
>>> > + if (const ObjCCategoryDecl *CatDecl = dyn_cast<ObjCCategoryDecl>(CD))
>>> > + if (CatDecl->IsClassExtension())
>>> > + SetterMethod = CatDecl->getClassInterface()->
>>> > + getInstanceMethod(property->getSetterName());
>>> > DiagnosePropertyAccessorMismatch(property, GetterMethod,
>>> > property->getLocation());
>>> >
>>> > @@ -2068,9 +2032,7 @@ void Sema::ProcessPropertyDecl(ObjCPrope
>>> > // No instance method of same name as property getter name was found.
>>> > // Declare a getter method and add it to the list of methods
>>> > // for this class.
>>> > - SourceLocation Loc = redeclaredProperty ?
>>> > - redeclaredProperty->getLocation() :
>>> > - property->getLocation();
>>> > + SourceLocation Loc = property->getLocation();
>>> >
>>> > // If the property is null_resettable, the getter returns nonnull.
>>> > QualType resultTy = property->getType();
>>> > @@ -2130,9 +2092,7 @@ void Sema::ProcessPropertyDecl(ObjCPrope
>>> > // No instance method of same name as property setter name was found.
>>> > // Declare a setter method and add it to the list of methods
>>> > // for this class.
>>> > - SourceLocation Loc = redeclaredProperty ?
>>> > - redeclaredProperty->getLocation() :
>>> > - property->getLocation();
>>> > + SourceLocation Loc = property->getLocation();
>>> >
>>> > SetterMethod =
>>> > ObjCMethodDecl::Create(Context, Loc, Loc,
>>> >
>>> > Modified: cfe/trunk/lib/Serialization/ASTWriter.cpp
>>> > URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Serialization/ASTWriter.cpp?rev=251874&r1=251873&r2=251874&view=diff <http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Serialization/ASTWriter.cpp?rev=251874&r1=251873&r2=251874&view=diff>
>>> > ==============================================================================
>>> > --- cfe/trunk/lib/Serialization/ASTWriter.cpp (original)
>>> > +++ cfe/trunk/lib/Serialization/ASTWriter.cpp Mon Nov 2 19:15:46 2015
>>> > @@ -5756,21 +5756,6 @@ void ASTWriter::AddedObjCCategoryToInter
>>> > const_cast<ObjCInterfaceDecl *>(IFD->getDefinition()));
>>> > }
>>> >
>>> > -
>>> > -void ASTWriter::AddedObjCPropertyInClassExtension(const ObjCPropertyDecl *Prop,
>>> > - const ObjCPropertyDecl *OrigProp,
>>> > - const ObjCCategoryDecl *ClassExt) {
>>> > - const ObjCInterfaceDecl *D = ClassExt->getClassInterface();
>>> > - if (!D)
>>> > - return;
>>> > -
>>> > - assert(!WritingAST && "Already writing the AST!");
>>> > - if (!D->isFromASTFile())
>>> > - return; // Declaration not imported from PCH.
>>> > -
>>> > - RewriteDecl(D);
>>> > -}
>>> > -
>>> > void ASTWriter::DeclarationMarkedUsed(const Decl *D) {
>>> > assert(!WritingAST && "Already writing the AST!");
>>> > if (!D->isFromASTFile())
>>> >
>>> > Modified: cfe/trunk/test/FixIt/atomic-property.m
>>> > URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/FixIt/atomic-property.m?rev=251874&r1=251873&r2=251874&view=diff <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/FixIt/atomic-property.m?rev=251874&r1=251873&r2=251874&view=diff>
>>> > ==============================================================================
>>> > --- cfe/trunk/test/FixIt/atomic-property.m (original)
>>> > +++ cfe/trunk/test/FixIt/atomic-property.m Mon Nov 2 19:15:46 2015
>>> > @@ -23,7 +23,7 @@
>>> > - (id) atomic_prop1 { return 0; }
>>> > @end
>>> >
>>> > -// CHECK: {4:1-4:10}:"@property (nonatomic) "
>>> > -// CHECK: {9:1-9:12}:"@property (nonatomic"
>>> > -// CHECK: {13:1-13:12}:"@property (nonatomic, "
>>> > +// CHECK-DAG: {4:11-4:11}:"(nonatomic) "
>>> > +// CHECK-DAG: {9:12-9:12}:"nonatomic"
>>> > +// CHECK-DAG: {13:12-13:12}:"nonatomic, "
>>> >
>>> >
>>> > Modified: cfe/trunk/test/Index/complete-kvc.m
>>> > URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Index/complete-kvc.m?rev=251874&r1=251873&r2=251874&view=diff <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Index/complete-kvc.m?rev=251874&r1=251873&r2=251874&view=diff>
>>> > ==============================================================================
>>> > --- cfe/trunk/test/Index/complete-kvc.m (original)
>>> > +++ cfe/trunk/test/Index/complete-kvc.m Mon Nov 2 19:15:46 2015
>>> > @@ -101,5 +101,5 @@ typedef signed char BOOL;
>>> >
>>> > // RUN: c-index-test -code-completion-at=%s:52:8 %s | FileCheck -check-prefix=CHECK-CC3 %s
>>> > // CHECK-CC3: ObjCInstanceMethodDecl:{TypedText countOfIntProperty} (55)
>>> > -// CHECK-CC3-NEXT: ObjCInstanceMethodDecl:{TypedText intProperty} (40)
>>> > +// CHECK-CC3-NEXT: ObjCInstanceMethodDecl:{TypedText intProperty} (42)
>>> > // CHECK-CC3-NEXT: ObjCInstanceMethodDecl:{TypedText isIntProperty} (40)
>>> >
>>> > Modified: cfe/trunk/test/Modules/ModuleDebugInfo.m
>>> > URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Modules/ModuleDebugInfo.m?rev=251874&r1=251873&r2=251874&view=diff <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Modules/ModuleDebugInfo.m?rev=251874&r1=251873&r2=251874&view=diff>
>>> > ==============================================================================
>>> > --- cfe/trunk/test/Modules/ModuleDebugInfo.m (original)
>>> > +++ cfe/trunk/test/Modules/ModuleDebugInfo.m Mon Nov 2 19:15:46 2015
>>> > @@ -33,7 +33,7 @@
>>> > // CHECK: !DIDerivedType(tag: DW_TAG_typedef, name: "InnerEnum"
>>> > // CHECK: !DISubprogram(name: "+[ObjCClass classMethod]"
>>> > // CHECK: !DISubprogram(name: "-[ObjCClass instanceMethodWithInt:]"
>>> > -// CHECK: !DISubprogram(name: "-[ categoryMethod]"
>>> > +// CHECK: !DISubprogram(name: "-[Category(Category) categoryMethod]"
>>> >
>>> > // MODULE-CHECK: !DICompositeType(tag: DW_TAG_enumeration_type,
>>> > // MODULE-CHECK-SAME: scope: ![[MODULE:[0-9]+]],
>>> >
>>> > Modified: cfe/trunk/test/PCH/chain-categories.m
>>> > URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/PCH/chain-categories.m?rev=251874&r1=251873&r2=251874&view=diff <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/PCH/chain-categories.m?rev=251874&r1=251873&r2=251874&view=diff>
>>> > ==============================================================================
>>> > --- cfe/trunk/test/PCH/chain-categories.m (original)
>>> > +++ cfe/trunk/test/PCH/chain-categories.m Mon Nov 2 19:15:46 2015
>>> > @@ -16,6 +16,10 @@
>>> > - (void)finalize;
>>> > @end
>>> >
>>> > + at interface NSObject (Properties)
>>> > + at property (readonly,nonatomic) int intProp;
>>> > + at end
>>> > +
>>> > //===----------------------------------------------------------------------===//
>>> > #elif !defined(HEADER2)
>>> > #define HEADER2
>>> > @@ -34,6 +38,12 @@
>>> > -(void)extMeth;
>>> > @end
>>> >
>>> > + at interface NSObject ()
>>> > + at property (readwrite,nonatomic) int intProp;
>>> > + at end
>>> > +
>>> > + at class NSObject;
>>> > +
>>> > //===----------------------------------------------------------------------===//
>>> > #else
>>> > //===----------------------------------------------------------------------===//
>>> > @@ -47,6 +57,9 @@
>>> >
>>> > void test(NSObject *o) {
>>> > [o extMeth];
>>> > +
>>> > + // Make sure the property is treated as read-write.
>>> > + o.intProp = 17;
>>> > }
>>> >
>>> > //===----------------------------------------------------------------------===//
>>> >
>>> > Modified: cfe/trunk/test/SemaObjC/atomoic-property-synnthesis-rules.m
>>> > URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaObjC/atomoic-property-synnthesis-rules.m?rev=251874&r1=251873&r2=251874&view=diff <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaObjC/atomoic-property-synnthesis-rules.m?rev=251874&r1=251873&r2=251874&view=diff>
>>> > ==============================================================================
>>> > --- cfe/trunk/test/SemaObjC/atomoic-property-synnthesis-rules.m (original)
>>> > +++ cfe/trunk/test/SemaObjC/atomoic-property-synnthesis-rules.m Mon Nov 2 19:15:46 2015
>>> > @@ -129,10 +129,8 @@
>>> >
>>> > // read-only in class, read-write in class extension - might warn
>>> > @property(readonly) int GetSet_ReadWriteInExt;
>>> > - at property(readonly) int Get_ReadWriteInExt; // expected-note {{property declared here}} \
>>> > - // expected-note {{setter and getter must both be synthesized}}
>>> > - at property(readonly) int Set_ReadWriteInExt; // expected-note {{property declared here}} \
>>> > - // expected-note {{setter and getter must both be synthesized}}
>>> > + at property(readonly) int Get_ReadWriteInExt;
>>> > + at property(readonly) int Set_ReadWriteInExt;
>>> > @property(readonly) int None_ReadWriteInExt;
>>> > @property(nonatomic,readonly) int GetSet_Nonatomic_ReadWriteInExt;
>>> > @property(nonatomic,readonly) int Get_Nonatomic_ReadWriteInExt;
>>> > @@ -162,10 +160,8 @@
>>> > @property(nonatomic,readonly) int None_Nonatomic_ReadOnly_LateSynthesize;
>>> >
>>> > @property(readonly) int GetSet_ReadWriteInExt_LateSynthesize;
>>> > - at property(readonly) int Get_ReadWriteInExt_LateSynthesize; // expected-note {{property declared here}} \
>>> > - // expected-note {{setter and getter must both be synthesized}}
>>> > - at property(readonly) int Set_ReadWriteInExt_LateSynthesize; // expected-note {{property declared here}} \
>>> > - // expected-note {{setter and getter must both be synthesized}}
>>> > + at property(readonly) int Get_ReadWriteInExt_LateSynthesize;
>>> > + at property(readonly) int Set_ReadWriteInExt_LateSynthesize;
>>> > @property(readonly) int None_ReadWriteInExt_LateSynthesize;
>>> > @property(nonatomic,readonly) int GetSet_Nonatomic_ReadWriteInExt_LateSynthesize;
>>> > @property(nonatomic,readonly) int Get_Nonatomic_ReadWriteInExt_LateSynthesize;
>>> > @@ -207,8 +203,10 @@
>>> > @interface Foo ()
>>> >
>>> > @property(readwrite) int GetSet_ReadWriteInExt;
>>> > - at property(readwrite) int Get_ReadWriteInExt;
>>> > - at property(readwrite) int Set_ReadWriteInExt;
>>> > + at property(readwrite) int Get_ReadWriteInExt; // expected-note {{property declared here}} \
>>> > + // expected-note {{setter and getter must both be synthesized}}
>>> > + at property(readwrite) int Set_ReadWriteInExt; // expected-note {{property declared here}} \
>>> > + // expected-note {{setter and getter must both be synthesized}}
>>> > @property(readwrite) int None_ReadWriteInExt;
>>> > @property(nonatomic,readwrite) int GetSet_Nonatomic_ReadWriteInExt;
>>> > @property(nonatomic,readwrite) int Get_Nonatomic_ReadWriteInExt;
>>> > @@ -216,8 +214,10 @@
>>> > @property(nonatomic,readwrite) int None_Nonatomic_ReadWriteInExt;
>>> >
>>> > @property(readwrite) int GetSet_ReadWriteInExt_LateSynthesize;
>>> > - at property(readwrite) int Get_ReadWriteInExt_LateSynthesize;
>>> > - at property(readwrite) int Set_ReadWriteInExt_LateSynthesize;
>>> > + at property(readwrite) int Get_ReadWriteInExt_LateSynthesize; // expected-note {{property declared here}} \
>>> > + // expected-note {{setter and getter must both be synthesized}}
>>> > + at property(readwrite) int Set_ReadWriteInExt_LateSynthesize; // expected-note {{property declared here}} \
>>> > + // expected-note {{setter and getter must both be synthesized}}
>>> > @property(readwrite) int None_ReadWriteInExt_LateSynthesize;
>>> > @property(nonatomic,readwrite) int GetSet_Nonatomic_ReadWriteInExt_LateSynthesize;
>>> > @property(nonatomic,readwrite) int Get_Nonatomic_ReadWriteInExt_LateSynthesize;
>>> >
>>> > Modified: cfe/trunk/test/SemaObjC/property-3.m
>>> > URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaObjC/property-3.m?rev=251874&r1=251873&r2=251874&view=diff <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaObjC/property-3.m?rev=251874&r1=251873&r2=251874&view=diff>
>>> > ==============================================================================
>>> > --- cfe/trunk/test/SemaObjC/property-3.m (original)
>>> > +++ cfe/trunk/test/SemaObjC/property-3.m Mon Nov 2 19:15:46 2015
>>> > @@ -29,5 +29,5 @@ typedef signed char BOOL;
>>> >
>>> > @interface EKCalendar () <EKProtocolMutableCalendar>
>>> > @property (nonatomic, assign) BOOL allowReminders;
>>> > - at property (nonatomic, assign) BOOL allowNonatomicProperty; // expected-warning {{'atomic' attribute on property 'allowNonatomicProperty' does not match the property inherited from 'EKProtocolCalendar'}}
>>> > + at property (nonatomic, assign) BOOL allowNonatomicProperty; // expected-warning {{'atomic' attribute on property 'allowNonatomicProperty' does not match the property inherited from EKProtocolCalendar}}
>>> > @end
>>> >
>>> > Modified: cfe/trunk/test/SemaObjC/property-in-class-extension-1.m
>>> > URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaObjC/property-in-class-extension-1.m?rev=251874&r1=251873&r2=251874&view=diff <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaObjC/property-in-class-extension-1.m?rev=251874&r1=251873&r2=251874&view=diff>
>>> > ==============================================================================
>>> > --- cfe/trunk/test/SemaObjC/property-in-class-extension-1.m (original)
>>> > +++ cfe/trunk/test/SemaObjC/property-in-class-extension-1.m Mon Nov 2 19:15:46 2015
>>> > @@ -10,7 +10,7 @@
>>> >
>>> > @property (nonatomic, copy, readonly) NSString* matchingMemoryModel;
>>> >
>>> > - at property (nonatomic, retain, readonly) NSString* addingNoNewMemoryModel;
>>> > + at property (atomic, retain, readonly) NSString* addingNoNewMemoryModel;
>>> >
>>> > @property (readonly) NSString* none;
>>> > @property (readonly) NSString* none1;
>>> > @@ -50,10 +50,14 @@
>>> > // rdar://12214070 <>
>>> > @interface radar12214070
>>> > @property (nonatomic, atomic, readonly) float propertyName; // expected-error {{property attributes 'atomic' and 'nonatomic' are mutually exclusive}}
>>> > +
>>> > + at property (nonatomic, readonly) float propertyName2; // expected-note {{property declared here}}
>>> > @end
>>> >
>>> > @interface radar12214070 ()
>>> > @property (atomic, nonatomic, readonly, readwrite) float propertyName; // expected-error {{property attributes 'readonly' and 'readwrite' are mutually exclusive}} \
>>> > // expected-error {{property attributes 'atomic' and 'nonatomic' are mutually exclusive}}
>>> > +
>>> > + at property (atomic, readwrite) float propertyName2; // expected-warning {{'atomic' attribute on property 'propertyName2' does not match the property inherited from radar12214070}}
>>> > @end
>>> >
>>> >
>>> > Modified: cfe/trunk/test/SemaObjCXX/property-invalid-type.mm <http://property-invalid-type.mm/>
>>> > URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaObjCXX/property-invalid-type.mm?rev=251874&r1=251873&r2=251874&view=diff <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaObjCXX/property-invalid-type.mm?rev=251874&r1=251873&r2=251874&view=diff>
>>> > ==============================================================================
>>> > --- cfe/trunk/test/SemaObjCXX/property-invalid-type.mm <http://property-invalid-type.mm/> (original)
>>> > +++ cfe/trunk/test/SemaObjCXX/property-invalid-type.mm <http://property-invalid-type.mm/> Mon Nov 2 19:15:46 2015
>>> > @@ -13,11 +13,11 @@
>>> > @synthesize response;
>>> > - (void) foo :(A*) a // expected-error {{expected a type}}
>>> > {
>>> > - self.response = a;
>>> > + self.response = a; // expected-error{{assigning to 'int *' from incompatible type 'id'}}
>>> > }
>>> > @end
>>> >
>>> > void foo(I *i)
>>> > {
>>> > - i.helper;
>>> > + i.helper; // expected-warning{{property access result unused - getters should not be used for side effects}}
>>> > }
>>> >
>>> >
>>> > _______________________________________________
>>> > cfe-commits mailing list
>>> > cfe-commits at lists.llvm.org <mailto:cfe-commits at lists.llvm.org>
>>> > http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits <http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits>
>>>
>>> _______________________________________________
>>> cfe-commits mailing list
>>> cfe-commits at lists.llvm.org <mailto:cfe-commits at lists.llvm.org>
>>> http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits <http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits>
>>>
>>>
>>>
>>> <propregression.patch>
>>
>>
>> <prop.diff>
>
>
>
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