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 // rdar://9495837
   3
   4 @interface Foo {
   5   __unsafe_unretained id unsafe_ivar;
   6 }
   7
   8 @property (assign,nonatomic) id unsafe_prop;
   9
  10 - (id)init;
  11 + (id)new;
  12 + (id)alloc;
  13
  14 -(void)Meth;
  15 @end
  16
  17 @implementation Foo
  18 @synthesize unsafe_prop;
  19 -(id)init { return self; }
  20 +(id)new { return 0; }
  21 +(id)alloc { return 0; }
  22
  23 -(void)Meth {
  24   self.unsafe_prop = [Foo new]; // expected-warning {{assigning retained object to unsafe property}}
  25   self->unsafe_ivar = [Foo new]; // expected-warning {{assigning retained object to unsafe_unretained}}
  26   self.unsafe_prop = [[Foo alloc] init]; // expected-warning {{assigning retained object to unsafe property}}
  27   self->unsafe_ivar = [[Foo alloc] init]; // expected-warning {{assigning retained object to unsafe_unretained}}
  28
  29   __unsafe_unretained id unsafe_var;
  30   unsafe_var = [Foo new]; // expected-warning {{assigning retained object to unsafe_unretained}}
  31   unsafe_var = [[Foo alloc] init]; // expected-warning {{assigning retained object to unsafe_unretained}}
  32 }
  33 @end
  34
  35 void bar(Foo *f) {
  36   f.unsafe_prop = [Foo new]; // expected-warning {{assigning retained object to unsafe property}}
  37
  38   __unsafe_unretained id unsafe_var;
  39   unsafe_var = [Foo new]; // expected-warning {{assigning retained object to unsafe_unretained}}
  40   unsafe_var = [[Foo alloc] init]; // expected-warning {{assigning retained object to unsafe_unretained}}
  41 }