if (ObjCIvarDecl *Ivar = R.getAsSingle<ObjCIvarDecl>()) {
R.clear();
ExprResult E(LookupInObjCMethod(R, S, Ivar->getIdentifier()));
- assert(E.isInvalid() || E.get());
+ // In a hopelessly buggy code, Objective-C instance variable
+ // lookup fails and no expression will be built to reference it.
+ if (!E.isInvalid() && !E.get())
+ return ExprError();
return move(E);
}
}
--- /dev/null
+// RUN: %clang_cc1 -fsyntax-only -fobjc-nonfragile-abi -verify %s
+// rdar://10177744
+
+@interface Foo
+@property (nonatomic, retain) NSString* what; // expected-error {{unknown type name 'NSString'}} \
+ // expected-error {{property with}} \
+ // expected-note {{previous definition is here}}
+@end
+
+@implementation Foo
+- (void) setWhat: (NSString*) value { // expected-error {{expected a type}} \
+ // expected-warning {{conflicting parameter types in implementation of}}
+ __what; // expected-error {{use of undeclared identifier}} \
+ // expected-warning {{expression result unused}}
+}
+@synthesize what; // expected-note 2 {{'what' declared here}}
+@end
+
+@implementation Bar // expected-warning {{cannot find interface declaration for}}
+- (NSString*) what { // expected-error {{expected a type}}
+ return __what; // expected-error {{use of undeclared identifier}}
+}
+@end