File: format-arg-attribute.m

package info (click to toggle)
llvm-toolchain-9 1%3A9.0.1-16
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 882,436 kB
  • sloc: cpp: 4,167,636; ansic: 714,256; asm: 457,610; python: 155,927; objc: 65,094; sh: 42,856; lisp: 26,908; perl: 7,786; pascal: 7,722; makefile: 6,881; ml: 5,581; awk: 3,648; cs: 2,027; xml: 888; javascript: 381; ruby: 156
file content (27 lines) | stat: -rw-r--r-- 1,774 bytes parent folder | download | duplicates (9) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
 
// RUN: %clang_cc1 -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-warning {{'format_arg' attribute only applies to Objective-C methods and non-K&R-style functions}}
union u1 { int i; } __attribute__((format_arg(1)));  // expected-warning {{'format_arg' attribute only applies to}}
enum e1 { E1V0 } __attribute__((format_arg(1))); // expected-warning {{'format_arg' attribute only applies to}}

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)));