57 lines
1.5 KiB
Objective-C
57 lines
1.5 KiB
Objective-C
/* RUN: %clang_cc1 -Wall -fsyntax-only -verify -std=c89 -pedantic %s
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*/
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@class NSArray;
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void f(NSArray *a) {
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id keys;
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for (int i in a); /* expected-error{{selector element type 'int' is not a valid object}} */
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for ((id)2 in a); /* expected-error{{selector element is not a valid lvalue}} */
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for (2 in a); /* expected-error{{selector element is not a valid lvalue}} */
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/* This should be ok, 'thisKey' should be scoped to the loop in question,
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* and no diagnostics even in pedantic mode should happen.
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* rdar://6814674
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*/
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for (id thisKey in keys); /* expected-warning {{unused variable 'thisKey'}} */
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for (id thisKey in keys); /* expected-warning {{unused variable 'thisKey'}} */
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}
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/* // rdar://9072298 */
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@protocol NSObject @end
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@interface NSObject <NSObject> {
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Class isa;
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}
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@end
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typedef struct {
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unsigned long state;
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id *itemsPtr;
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unsigned long *mutationsPtr;
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unsigned long extra[5];
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} NSFastEnumerationState;
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@protocol NSFastEnumeration
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- (unsigned long)countByEnumeratingWithState:(NSFastEnumerationState *)state objects:(id *)stackbuf count:(unsigned long)len;
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@end
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int main ()
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{
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NSObject<NSFastEnumeration>* collection = ((void*)0);
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for (id thing in collection) { } /* expected-warning {{unused variable 'thing'}} */
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return 0;
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}
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/* rdar://problem/11068137 */
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@interface Test2
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@property (assign) id prop;
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@end
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void test2(NSObject<NSFastEnumeration> *collection) {
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Test2 *obj;
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for (obj.prop in collection) { /* expected-error {{selector element is not a valid lvalue}} */
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}
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}
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