def InvalidOffsetof : DiagGroup<"invalid-offsetof">;
def : DiagGroup<"strict-prototypes">;
-def : DiagGroup<"strict-selector-match">;
+def StrictSelector : DiagGroup<"strict-selector-match">;
def SwitchEnum : DiagGroup<"switch-enum">;
def Switch : DiagGroup<"switch", [SwitchEnum]>;
def Trigraphs : DiagGroup<"trigraphs">;
"NSCopying protocol is not appropriate with -fobjc-gc[-only]">;
def warn_multiple_method_decl : Warning<"multiple methods named %0 found">;
+def warn_strict_multiple_method_decl : Warning<
+ "multiple methods named %0 found">, InGroup<StrictSelector>, DefaultIgnore;
def warn_accessor_property_type_mismatch : Warning<
"type of property %0 does not match type of accessor %1">;
def note_declared_at : Note<"declared here">;
/// true, or false, accordingly.
bool MatchTwoMethodDeclarations(const ObjCMethodDecl *Method,
const ObjCMethodDecl *PrevMethod,
- bool matchBasedOnSizeAndAlignment = false);
+ bool matchBasedOnSizeAndAlignment = false,
+ bool matchBasedOnStrictEqulity = false);
/// MatchAllMethodDeclarations - Check methods declaraed in interface or
/// or protocol against those declared in their implementations.
/// LookupMethodInGlobalPool - Returns the instance or factory method and
/// optionally warns if there are multiple signatures.
ObjCMethodDecl *LookupMethodInGlobalPool(Selector Sel, SourceRange R,
+ bool receiverIdOrClass,
bool warn, bool instance);
public:
/// LookupInstanceMethodInGlobalPool - Returns the method and warns if
/// there are multiple signatures.
ObjCMethodDecl *LookupInstanceMethodInGlobalPool(Selector Sel, SourceRange R,
+ bool receiverIdOrClass=false,
bool warn=true) {
- return LookupMethodInGlobalPool(Sel, R, warn, /*instance*/true);
+ return LookupMethodInGlobalPool(Sel, R, receiverIdOrClass,
+ warn, /*instance*/true);
}
/// LookupFactoryMethodInGlobalPool - Returns the method and warns if
/// there are multiple signatures.
ObjCMethodDecl *LookupFactoryMethodInGlobalPool(Selector Sel, SourceRange R,
+ bool receiverIdOrClass=false,
bool warn=true) {
- return LookupMethodInGlobalPool(Sel, R, warn, /*instance*/false);
+ return LookupMethodInGlobalPool(Sel, R, receiverIdOrClass,
+ warn, /*instance*/false);
}
/// LookupImplementedMethodInGlobalPool - Returns the method which has an
/// TODO: Handle protocol list; such as id<p1,p2> in type comparisons
bool Sema::MatchTwoMethodDeclarations(const ObjCMethodDecl *Method,
const ObjCMethodDecl *PrevMethod,
- bool matchBasedOnSizeAndAlignment) {
+ bool matchBasedOnSizeAndAlignment,
+ bool matchBasedOnStrictEqulity) {
QualType T1 = Context.getCanonicalType(Method->getResultType());
QualType T2 = Context.getCanonicalType(PrevMethod->getResultType());
if (T1 != T2) {
// The result types are different.
- if (!matchBasedOnSizeAndAlignment)
+ if (!matchBasedOnSizeAndAlignment || matchBasedOnStrictEqulity)
return false;
// Incomplete types don't have a size and alignment.
if (T1->isIncompleteType() || T2->isIncompleteType())
T2 = Context.getCanonicalType((*PrevI)->getType());
if (T1 != T2) {
// The result types are different.
- if (!matchBasedOnSizeAndAlignment)
+ if (!matchBasedOnSizeAndAlignment || matchBasedOnStrictEqulity)
return false;
// Incomplete types don't have a size and alignment.
if (T1->isIncompleteType() || T2->isIncompleteType())
Entry.Next = new (Mem) ObjCMethodList(Method, Entry.Next);
}
-// FIXME: Finish implementing -Wno-strict-selector-match.
ObjCMethodDecl *Sema::LookupMethodInGlobalPool(Selector Sel, SourceRange R,
+ bool receiverIdOrClass,
bool warn, bool instance) {
GlobalMethodPool::iterator Pos = MethodPool.find(Sel);
if (Pos == MethodPool.end()) {
ObjCMethodList &MethList = instance ? Pos->second.first : Pos->second.second;
+ bool strictSelectorMatch = receiverIdOrClass && warn &&
+ (Diags.getDiagnosticLevel(diag::warn_strict_multiple_method_decl) !=
+ Diagnostic::Ignored);
if (warn && MethList.Method && MethList.Next) {
bool issueWarning = false;
- for (ObjCMethodList *Next = MethList.Next; Next; Next = Next->Next) {
- // This checks if the methods differ by size & alignment.
- if (!MatchTwoMethodDeclarations(MethList.Method, Next->Method, true))
- issueWarning = true;
- }
+ if (strictSelectorMatch)
+ for (ObjCMethodList *Next = MethList.Next; Next; Next = Next->Next) {
+ // This checks if the methods differ in type mismatch.
+ if (!MatchTwoMethodDeclarations(MethList.Method, Next->Method, false, true))
+ issueWarning = true;
+ }
+
+ if (!issueWarning)
+ for (ObjCMethodList *Next = MethList.Next; Next; Next = Next->Next) {
+ // This checks if the methods differ by size & alignment.
+ if (!MatchTwoMethodDeclarations(MethList.Method, Next->Method, true))
+ issueWarning = true;
+ }
+
if (issueWarning) {
- Diag(R.getBegin(), diag::warn_multiple_method_decl) << Sel << R;
+ if (strictSelectorMatch)
+ Diag(R.getBegin(), diag::warn_strict_multiple_method_decl) << Sel << R;
+ else
+ Diag(R.getBegin(), diag::warn_multiple_method_decl) << Sel << R;
Diag(MethList.Method->getLocStart(), diag::note_using)
<< MethList.Method->getSourceRange();
for (ObjCMethodList *Next = MethList.Next; Next; Next = Next->Next)
SourceLocation LParenLoc,
SourceLocation RParenLoc) {
ObjCMethodDecl *Method = LookupInstanceMethodInGlobalPool(Sel,
- SourceRange(LParenLoc, RParenLoc), false);
+ SourceRange(LParenLoc, RParenLoc), false, false);
if (!Method)
Method = LookupFactoryMethodInGlobalPool(Sel,
SourceRange(LParenLoc, RParenLoc));
if (!Method) {
// Handle messages to id.
- if (ReceiverType->isObjCIdType() || ReceiverType->isBlockPointerType() ||
+ bool receiverIsId = (ReceiverType->isObjCIdType() ||
+ ReceiverType->isObjCQualifiedIdType());
+ if (receiverIsId || ReceiverType->isBlockPointerType() ||
(Receiver && Context.isObjCNSObjectType(Receiver->getType()))) {
Method = LookupInstanceMethodInGlobalPool(Sel,
- SourceRange(LBracLoc, RBracLoc));
+ SourceRange(LBracLoc, RBracLoc),
+ receiverIsId);
if (!Method)
Method = LookupFactoryMethodInGlobalPool(Sel,
- SourceRange(LBracLoc, RBracLoc));
+ SourceRange(LBracLoc, RBracLoc),
+ receiverIsId);
} else if (ReceiverType->isObjCClassType() ||
ReceiverType->isObjCQualifiedClassType()) {
// Handle messages to Class.
// If not messaging 'self', look for any factory method named 'Sel'.
if (!Receiver || !isSelfExpr(Receiver)) {
Method = LookupFactoryMethodInGlobalPool(Sel,
- SourceRange(LBracLoc, RBracLoc));
+ SourceRange(LBracLoc, RBracLoc),
+ true);
if (!Method) {
// If no class (factory) method was found, check if an _instance_
// method of the same name exists in the root class only.
Method = LookupInstanceMethodInGlobalPool(Sel,
- SourceRange(LBracLoc, RBracLoc));
+ SourceRange(LBracLoc, RBracLoc),
+ true);
if (Method)
if (const ObjCInterfaceDecl *ID =
dyn_cast<ObjCInterfaceDecl>(Method->getDeclContext())) {
// compatibility. FIXME: should we deviate??
if (OCIType->qual_empty()) {
Method = LookupInstanceMethodInGlobalPool(Sel,
- SourceRange(LBracLoc, RBracLoc));
+ SourceRange(LBracLoc, RBracLoc));
if (Method && !OCIType->getInterfaceDecl()->isForwardDecl())
Diag(Loc, diag::warn_maynot_respond)
<< OCIType->getInterfaceDecl()->getIdentifier() << Sel;
--- /dev/null
+// RUN: %clang_cc1 -Wstrict-selector-match -fsyntax-only -verify %s
+
+@interface Foo
+-(int) method; // expected-note {{using}}
+@end
+
+@interface Bar
+-(float) method; // expected-note {{also found}}
+@end
+
+int main() { [(id)0 method]; } // expected-warning {{multiple methods named 'method' found [-Wstrict-selector-match]}}
+
+@interface Object @end
+
+@interface Class1
+- (void)setWindow:(Object *)wdw; // expected-note {{using}}
+@end
+
+@interface Class2
+- (void)setWindow:(Class1 *)window; // expected-note {{also found}}
+@end
+
+id foo(void) {
+ Object *obj = 0;
+ id obj2 = obj;
+ [obj setWindow:0]; // expected-warning {{Object' may not respond to 'setWindow:'}}
+ [obj2 setWindow:0]; // expected-warning {{multiple methods named 'setWindow:' found [-Wstrict-selector-match]}}
+ return obj;
+}
+
+@protocol MyObject
+- (id)initWithData:(Object *)data; // expected-note {{using}} \
+ // expected-note {{passing argument to parameter 'data' here}}
+@end
+
+@protocol SomeOther
+- (id)initWithData:(int)data; // expected-note {{also found}}
+@end
+
+@protocol MyCoding
+- (id)initWithData:(id<MyObject, MyCoding>)data; // expected-note {{also found}}
+@end
+
+@interface NTGridDataObject: Object <MyCoding>
+{
+ Object<MyCoding> *_data;
+}
++ (NTGridDataObject*)dataObject:(id<MyObject, MyCoding>)data;
+@end
+
+@implementation NTGridDataObject
+- (id)initWithData:(id<MyObject, MyCoding>)data {
+ return data;
+}
++ (NTGridDataObject*)dataObject:(id<MyObject, MyCoding>)data
+{
+ NTGridDataObject *result = [(id)0 initWithData:data]; // expected-warning {{multiple methods named 'initWithData:' found [-Wstrict-selector-match]}} \
+ expected-warning {{sending 'id<MyObject,MyCoding>' to parameter of incompatible type 'Object *'}}
+ return result;
+}
+@end
+
+@interface Base
+- (unsigned)port;
+@end
+
+@interface Derived: Base
+- (Object *)port;
++ (Protocol *)port;
+@end
+
+void foo1(void) {
+ [(Class)0 port]; // OK - gcc issues warning but there is only one Class method so no ambiguity to warn
+}
+