aboutsummaryrefslogtreecommitdiffstats
path: root/gcc-4.9/gcc/testsuite/objc.dg/strings/const-str-6.m
blob: fca7643af3788e0061c9f938af30533a5c344901 (plain)
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
28
/* Negative test case for constant string layout.  */
/* Contributed by Ziemowit Laski  <zlaski@apple.com>.  */

/* { dg-do compile } */
/* { dg-options "-fconstant-string-class=MyConstantString" } */
/* { dg-options "-mno-constant-cfstrings -fconstant-string-class=MyConstantString" { target *-*-darwin* } } */ 

@interface MyBase {
  char p;
}
@end

@interface MyConstantString: MyBase {
  union {
    void     *u;
    unsigned char   *c;
  } _contents;
  char  _count;
}
@end

/* The NeXT runtime initializes the 'isa' pointer of string constants at
   compile time.  */
#ifdef __NEXT_RUNTIME__
extern void *_MyConstantStringClassReference;
#endif

MyConstantString *str = @"Hello"; /* { dg-error "interface .MyConstantString. does not have valid constant string layout" } */