clang/test/SemaObjC/arc-unsafe-assigns.m

   1 // RUN: %clang_cc1 -triple x86_64-apple-darwin11 -fsyntax-only -fobjc-arc -verify -Wno-objc-root-class %s
   2
   3 @interface Foo {
   4   __unsafe_unretained id unsafe_ivar;
   5 }
   6
   7 @property (assign,nonatomic) id unsafe_prop;
   8
   9 - (id)init;
  10 + (id)new;
  11 + (id)alloc;
  12
  13 -(void)Meth;
  14 @end
  15
  16 @implementation Foo
  17 @synthesize unsafe_prop;
  18 -(id)init { return self; }
  19 +(id)new { return 0; }
  20 +(id)alloc { return 0; }
  21
  22 -(void)Meth {
  23   self.unsafe_prop = [Foo new]; // expected-warning {{assigning retained object to unsafe property}}
  24   self->unsafe_ivar = [Foo new]; // expected-warning {{assigning retained object to unsafe_unretained}}
  25   self.unsafe_prop = [[Foo alloc] init]; // expected-warning {{assigning retained object to unsafe property}}
  26   self->unsafe_ivar = [[Foo alloc] init]; // expected-warning {{assigning retained object to unsafe_unretained}}
  27
  28   __unsafe_unretained id unsafe_var;
  29   unsafe_var = [Foo new]; // expected-warning {{assigning retained object to unsafe_unretained}}
  30   unsafe_var = [[Foo alloc] init]; // expected-warning {{assigning retained object to unsafe_unretained}}
  31 }
  32 @end
  33
  34 void bar(Foo *f) {
  35   f.unsafe_prop = [Foo new]; // expected-warning {{assigning retained object to unsafe property}}
  36
  37   __unsafe_unretained id unsafe_var;
  38   unsafe_var = [Foo new]; // expected-warning {{assigning retained object to unsafe_unretained}}
  39   unsafe_var = [[Foo alloc] init]; // expected-warning {{assigning retained object to unsafe_unretained}}
  40 }