1/* Check NSString format extensions.  */
2/* { dg-do compile { target *-*-darwin* } } */
3/* { dg-skip-if "" { *-*-* } { "-fgnu-runtime" } { "" } } */
4/* { dg-options "-Wall" } */
5
6#ifndef __CONSTANT_CFSTRINGS__
7#error requires CFString
8#endif
9
10#ifdef __cplusplus
11extern "C" {
12#endif
13extern int printf (const char *fmt, ...);
14typedef const struct __CFString * CFStringRef;
15
16#ifdef __cplusplus
17}
18#endif
19
20@class NSString;
21
22int s1 (NSString *fmt, ...) __attribute__((format(NSString, 1, 2))) ; /* OK */
23/* A CFString can represent an NSString.  */
24int s1a (CFStringRef fmt, ...) __attribute__((format(NSString, 1, 2))) ; /* OK */
25/* But... it is possible that a CFString format might imply functionality that
26   is not present in objective-c.  */
27int s1b (NSString *fmt, ...) __attribute__((format(CFString, 1, 2))) ; /* { dg-error "format argument should be a .CFString. reference" } */
28
29int s2 (int a, NSString *fmt, ... ) __attribute__((format(__NSString__, 2, 3))) ; /* OK */
30
31int s2a (int a, NSString *fmt, ... ) __attribute__((format(NSString, 2, 2))) ; /* { dg-error "format string argument follows the args to be formatted" } */
32
33int s3 (const char *fmt, ... ) __attribute__((format(__NSString__, 1, 2))) ; /* { dg-error "format argument should be a .NSString. reference but a string was found" } */
34int s4 (NSString *fmt, ... ) __attribute__((format(printf, 1, 2))) ; /* { dg-error "found a .NSString. reference but the format argument should be a string" } */
35
36char *s5 (char dum, char *fmt1, ... ) __attribute__((format_arg(2))) ; /* OK */
37NSString *s6 (NSString *dum, NSString *fmt1, ... ) __attribute__((format_arg(2))) ; /* OK */
38
39char *s7 (int dum, void *fmt1, ... ) __attribute__((format_arg(2))) ; /* { dg-error "format string argument is not a string type" } */
40int s8 (NSString *dum, NSString *fmt1, ... ) __attribute__((format_arg(2))) ; /* { dg-error "function does not return string type" } */
41
42char *s9 (int dum, char *fmt1, ... ) __attribute__((format_arg(2))) ; /* OK */
43NSString *s10 (int dum, NSString *fmt1, ... ) __attribute__((format_arg(2))) ; /* OK */
44
45void foo (void)
46{
47  s1 (@"this format not checked %d %s", 3, 4);
48  printf("this one is checked %d %s", 3, 4, 5); /* { dg-warning "format '%s' expects argument of type 'char.', but argument 3 has type 'int'" } */
49			/* { dg-warning "too many arguments for format" "" { target *-*-* } .-1 } */
50  printf(s9 (1, (char *)"and so is this %d %d %s" , 3, 4, "hm"), 5, 6, 12); /* { dg-warning "format '%s' expects argument of type 'char.', but argument 4 has type 'int'" } */
51}
52