1 /* RUN: %clang_cc1 -Wall -fsyntax-only -verify -std=c89 -pedantic %s 2 */ 3 4 @class NSArray; 5 6 void f(NSArray *a) { 7 id keys; 8 for (int i in a); /* expected-error{{selector element type 'int' is not a valid object}} */ 9 for ((id)2 in a); /* expected-error{{selector element is not a valid lvalue}} */ 10 for (2 in a); /* expected-error{{selector element is not a valid lvalue}} */ 11 12 /* This should be ok, 'thisKey' should be scoped to the loop in question, 13 * and no diagnostics even in pedantic mode should happen. 14 * rdar://6814674 15 */ 16 for (id thisKey in keys); /* expected-warning {{unused variable 'thisKey'}} */ 17 for (id thisKey in keys); /* expected-warning {{unused variable 'thisKey'}} */ 18 } 19 20 /* // rdar://9072298 */ 21 @protocol NSObject @end 22 23 @interface NSObject <NSObject> { 24 Class isa; 25 } 26 @end 27 28 typedef struct { 29 unsigned long state; 30 id *itemsPtr; 31 unsigned long *mutationsPtr; 32 unsigned long extra[5]; 33 } NSFastEnumerationState; 34 35 @protocol NSFastEnumeration 36 37 - (unsigned long)countByEnumeratingWithState:(NSFastEnumerationState *)state objects:(id *)stackbuf count:(unsigned long)len; 38 39 @end 40 41 int main () 42 { 43 NSObject<NSFastEnumeration>* collection = ((void*)0); 44 for (id thing in collection) { } /* expected-warning {{unused variable 'thing'}} */ 45 46 return 0; 47 } 48 49 /* rdar://problem/11068137 */ 50 @interface Test2 51 @property (assign) id prop; 52 @end 53 void test2(NSObject<NSFastEnumeration> *collection) { 54 Test2 *obj; 55 for (obj.prop in collection) { /* expected-error {{selector element is not a valid lvalue}} */ 56 } 57 } 58
