1// RUN: %clang_cc1 -Werror -Wformat-nonliteral -verify -fsyntax-only %s 2 3@class NSString; 4 5extern NSString *fa2 (const NSString *) __attribute__((format_arg(1))); 6extern NSString *fa3 (NSString *) __attribute__((format_arg(1))); 7 8extern void fc1 (const NSString *) __attribute__((format_arg)); // expected-error {{'format_arg' attribute takes one argument}} 9extern void fc2 (const NSString *) __attribute__((format_arg())); // expected-error {{'format_arg' attribute takes one argument}} 10extern void fc3 (const NSString *) __attribute__((format_arg(1, 2))); // expected-error {{'format_arg' attribute takes one argument}} 11 12struct s1 { int i; } __attribute__((format_arg(1))); // expected-error {{'format_arg' attribute only applies to functions}} 13union u1 { int i; } __attribute__((format_arg(1))); // expected-error {{'format_arg' attribute only applies to functions}} 14enum e1 { E1V0 } __attribute__((format_arg(1))); // expected-error {{'format_arg' attribute only applies to functions}} 15 16extern NSString *ff3 (const NSString *) __attribute__((format_arg(3-2))); 17extern NSString *ff4 (const NSString *) __attribute__((format_arg(foo))); // expected-error {{use of undeclared identifier 'foo'}} 18 19/* format_arg formats must take and return a string. */ 20extern NSString *fi0 (int) __attribute__((format_arg(1))); // expected-error {{format argument not a string type}} 21extern NSString *fi1 (NSString *) __attribute__((format_arg(1))); 22 23extern NSString *fi2 (NSString *) __attribute__((format_arg(1))); 24 25extern int fi3 (const NSString *) __attribute__((format_arg(1))); // expected-error {{function does not return NSString}} 26extern NSString *fi4 (const NSString *) __attribute__((format_arg(1))); 27extern NSString *fi5 (const NSString *) __attribute__((format_arg(1))); 28 29// rdar://15242010 30@interface NSString 31+ (id)stringWithFormat:(NSString *)format, ... __attribute__((format(__NSString__, 1, 2))); 32@end 33 34@interface NSBundle 35- (NSString *)localizedStringForKey:(NSString *)key value:(NSString *)value table:(NSString *)tableName __attribute__ ((format_arg(1))); 36+ (NSBundle *)mainBundle; 37@end 38 39 40NSString* localizedFormat(NSString* string) __attribute__ ((format_arg(1))); 41 42int main() 43{ 44 [NSString stringWithFormat:[[NSBundle mainBundle] localizedStringForKey:@"foo %d" value:@"bar %d" table:0], 42]; 45 46 [NSString stringWithFormat:localizedFormat(@"foo %d"), 42]; 47} 48