llvm-project/clang/test/SemaObjC/format-arg-attribute.m

48 lines
2.3 KiB
Objective-C

// RUN: %clang_cc1 -Werror -Wformat-nonliteral -verify -fsyntax-only %s
@class NSString;
extern NSString *fa2 (const NSString *) __attribute__((format_arg(1)));
extern NSString *fa3 (NSString *) __attribute__((format_arg(1)));
extern void fc1 (const NSString *) __attribute__((format_arg)); // expected-error {{'format_arg' attribute takes one argument}}
extern void fc2 (const NSString *) __attribute__((format_arg())); // expected-error {{'format_arg' attribute takes one argument}}
extern void fc3 (const NSString *) __attribute__((format_arg(1, 2))); // expected-error {{'format_arg' attribute takes one argument}}
struct s1 { int i; } __attribute__((format_arg(1))); // expected-error {{'format_arg' attribute only applies to functions}}
union u1 { int i; } __attribute__((format_arg(1))); // expected-error {{'format_arg' attribute only applies to functions}}
enum e1 { E1V0 } __attribute__((format_arg(1))); // expected-error {{'format_arg' attribute only applies to functions}}
extern NSString *ff3 (const NSString *) __attribute__((format_arg(3-2)));
extern NSString *ff4 (const NSString *) __attribute__((format_arg(foo))); // expected-error {{use of undeclared identifier 'foo'}}
/* format_arg formats must take and return a string. */
extern NSString *fi0 (int) __attribute__((format_arg(1))); // expected-error {{format argument not a string type}}
extern NSString *fi1 (NSString *) __attribute__((format_arg(1)));
extern NSString *fi2 (NSString *) __attribute__((format_arg(1)));
extern int fi3 (const NSString *) __attribute__((format_arg(1))); // expected-error {{function does not return NSString}}
extern NSString *fi4 (const NSString *) __attribute__((format_arg(1)));
extern NSString *fi5 (const NSString *) __attribute__((format_arg(1)));
// rdar://15242010
@interface NSString
+ (id)stringWithFormat:(NSString *)format, ... __attribute__((format(__NSString__, 1, 2)));
@end
@interface NSBundle
- (NSString *)localizedStringForKey:(NSString *)key value:(NSString *)value table:(NSString *)tableName __attribute__ ((format_arg(1)));
+ (NSBundle *)mainBundle;
@end
NSString* localizedFormat(NSString* string) __attribute__ ((format_arg(1)));
int main()
{
[NSString stringWithFormat:[[NSBundle mainBundle] localizedStringForKey:@"foo %d" value:@"bar %d" table:0], 42];
[NSString stringWithFormat:localizedFormat(@"foo %d"), 42];
}