clang/test/SemaObjC/arc-peformselector.m

   1 // RUN: %clang_cc1 -triple x86_64-apple-darwin11 -fsyntax-only -fobjc-arc -verify %s
   2
   3 @interface NSObject
   4 - (id)copy; // expected-note {{method 'copy' declared here}}
   5 - (id) test __attribute__((ns_returns_retained)); // expected-note {{method 'test' declared here}}
   6 + (id) new ; // expected-note {{method 'new' declared here}}
   7 - (id) init __attribute__((ns_returns_not_retained));
   8 - (id)PlusZero;
   9 - (id)PlusOne __attribute__((ns_returns_retained)); // expected-note {{method 'PlusOne' declared here}}
  10 - (id)self;
  11 @end
  12
  13 @interface I : NSObject
  14 {
  15   SEL sel1;
  16 }
  17 - (id)performSelector:(SEL)aSelector;
  18 - (id)performSelector:(SEL)aSelector withObject:(id)object;
  19 - (id)performSelector:(SEL)aSelector withObject:(id)object1 withObject:(id)object2;
  20
  21 - (void)performSelector:(SEL)aSelector withObject:(id)anArgument afterDelay:(double)delay inModes:(I *)modes;
  22
  23 @end
  24
  25 @implementation I
  26 - (id) Meth {
  27   return [self performSelector : @selector(copy)]; // expected-error {{performSelector names a selector which retains the object}}
  28   return [self performSelector : @selector(test)]; // expected-error {{performSelector names a selector which retains the object}}
  29   return [self performSelector : @selector(new)]; // expected-error {{performSelector names a selector which retains the object}}
  30   return [self performSelector : @selector(init)];
  31   return [self performSelector : sel1]; // expected-warning {{performSelector may cause a leak because its selector is unknown}} \
  32                                         // expected-note {{used here}}
  33   return [self performSelector: (@selector(PlusZero))];
  34
  35   return [self performSelector : @selector(PlusZero)];
  36   return [self performSelector : @selector(PlusOne)]; // expected-error {{performSelector names a selector which retains the object}}
  37
  38   // Avoid the unknown selector warning for more complicated performSelector
  39   // variations because it produces too many false positives.
  40   [self performSelector: sel1 withObject:0 afterDelay:0 inModes:0];
  41
  42   return [self performSelector: @selector(self)]; // No error, -self is not +1!
  43 }
  44
  45 - (id)performSelector:(SEL)aSelector { return 0; }
  46 - (id)performSelector:(SEL)aSelector withObject:(id)object { return 0; }
  47 - (id)performSelector:(SEL)aSelector withObject:(id)object1 withObject:(id)object2 { return 0; }
  48 - (void)performSelector:(SEL)aSelector withObject:(id)anArgument afterDelay:(double)delay inModes:(I *)modes { }
  49 @end