clang/test/SemaObjC/unsafe-perform-selector.m

   1 // RUN: %clang_cc1 -triple x86_64-apple-darwin11 -fsyntax-only -fobjc-arc -verify %s
   2
   3 @class Thread;
   4
   5 __attribute__((objc_root_class))
   6 @interface NSObject
   7
   8 - (id)performSelector:(SEL)sel;
   9 - (void)performSelectorInBackground:(SEL)sel withObject:(id)arg;
  10 - (void)performSelectorOnMainThread:(SEL)sel;
  11
  12 - (void)performSelectorOnMainThread:(SEL)aSelector
  13                            onThread:(Thread *)thread
  14                          withObject:(id)arg
  15                       waitUntilDone:(int)wait
  16                               modes:(id *)array;
  17
  18 @end
  19
  20 typedef struct { int x; int y; int width; int height; } Rectangle;
  21
  22 struct Struct { Rectangle r; };
  23
  24 typedef union { int x; float f; } Union;
  25
  26 @interface Base : NSObject
  27
  28 - (struct Struct)returnsStruct2; // expected-note {{method 'returnsStruct2' that returns 'struct Struct' declared here}}
  29 - (Union)returnsId;
  30
  31 @end
  32
  33 @protocol IP
  34
  35 - (Union)returnsUnion; // expected-note 2 {{method 'returnsUnion' that returns 'Union' declared here}}
  36
  37 @end
  38
  39 typedef __attribute__((__ext_vector_type__(3))) float float3;
  40 typedef int int4 __attribute__ ((vector_size (16)));
  41
  42 @interface I : Base<IP>
  43
  44 - (Rectangle)returnsStruct; // expected-note 4 {{method 'returnsStruct' that returns 'Rectangle' declared here}}
  45 - (id)returnsId; // shadows base 'returnsId'
  46 - (int)returnsInt;
  47 - (I *)returnPtr;
  48 - (float3)returnsExtVector; // expected-note {{method 'returnsExtVector' that returns 'float3' (vector of 3 'float' values) declared here}}
  49 - (int4)returnsVector; // expected-note {{method 'returnsVector' that returns 'int4' (vector of 4 'int' values) declared here}}
  50
  51 + (Rectangle)returnsStructClass; // expected-note 2 {{method 'returnsStructClass' that returns 'Rectangle' declared here}}
  52 + (void)returnsUnion; // Not really
  53
  54 @end
  55
  56 void foo(I *i) {
  57   [i performSelector: @selector(returnsStruct)]; // expected-warning {{'performSelector:' is incompatible with selectors that return a struct type}}
  58   [i performSelectorInBackground: @selector(returnsStruct) withObject:0]; // expected-warning {{'performSelectorInBackground:withObject:' is incompatible with selectors that return a struct type}}
  59   [i performSelector: ((@selector(returnsUnion)))]; // expected-warning {{'performSelector:' is incompatible with selectors that return a union type}}
  60   [i performSelectorOnMainThread: @selector(returnsStruct2)]; // expected-warning {{'performSelectorOnMainThread:' is incompatible with selectors that return a struct type}}
  61   [I performSelector: (@selector(returnsStructClass))]; // expected-warning {{'performSelector:' is incompatible with selectors that return a struct type}}
  62
  63   [i performSelector: @selector(returnsId)];
  64   [i performSelector: @selector(returnsInt)];
  65   [i performSelector: @selector(returnsPtr)];
  66   [I performSelector: @selector(returnsUnion)]; // No warning expected
  67
  68   id obj = i;
  69   [obj performSelector: @selector(returnsId)];
  70   [obj performSelector: @selector(returnsStruct)];
  71 }
  72
  73 @interface SubClass: I
  74
  75 @end
  76
  77 @interface SubClass ()
  78 - (struct Struct)returnsSubStructExt; // expected-note {{method 'returnsSubStructExt' that returns 'struct Struct' declared here}} expected-note {{method 'returnsSubStructExt' declared here}}
  79 @end
  80
  81 @implementation SubClass // expected-warning {{method definition for 'returnsSubStructExt' not found}}
  82
  83 - (struct Struct)returnsSubStructImpl { // expected-note {{method 'returnsSubStructImpl' that returns 'struct Struct' declared here}}
  84   struct Struct Result;
  85   return Result;
  86 }
  87
  88 - (void)checkPrivateCalls {
  89   [self performSelector: @selector(returnsSubStructExt)]; // expected-warning {{'performSelector:' is incompatible with selectors that return a struct type}}
  90   [self performSelector: @selector(returnsSubStructImpl)]; // expected-warning {{'performSelector:' is incompatible with selectors that return a struct type}}
  91 }
  92
  93 - (void)checkSuperCalls {
  94   [super performSelector: @selector(returnsStruct)]; // expected-warning {{'performSelector:' is incompatible with selectors that return a struct type}}
  95   [super performSelectorInBackground: @selector(returnsUnion) withObject: self]; // expected-warning {{'performSelectorInBackground:withObject:' is incompatible with selectors that return a union type}}
  96   [super performSelector: @selector(returnsId)];
  97 }
  98
  99 + (struct Struct)returnsSubStructClassImpl { // expected-note {{method 'returnsSubStructClassImpl' that returns 'struct Struct' declared here}}
 100   struct Struct Result;
 101   return Result;
 102 }
 103
 104 + (void)checkClassPrivateCalls {
 105   [self performSelector: @selector(returnsSubStructClassImpl)]; // expected-warning {{'performSelector:' is incompatible with selectors that return a struct type}}
 106 }
 107
 108 + (void)checkClassSuperCalls {
 109   [super performSelector: @selector(returnsStructClass)]; // expected-warning {{'performSelector:' is incompatible with selectors that return a struct type}}
 110   [super performSelector: @selector(returnsUnion)]; // No warning expected
 111 }
 112
 113 @end
 114
 115 @implementation I (LongPerformSelectors)
 116
 117 - (void)checkLongCallsFromCategory {
 118   [self performSelectorOnMainThread: @selector(returnsStruct) onThread:0 withObject:self waitUntilDone:1 modes:0]; // expected-warning {{'performSelectorOnMainThread:onThread:withObject:waitUntilDone:modes:' is incompatible with selectors that return a struct type}}
 119 }
 120
 121 - (void)checkVectorReturn {
 122   [self performSelector: @selector(returnsExtVector)]; // expected-warning {{'performSelector:' is incompatible with selectors that return a vector type}}
 123   [self performSelector: @selector(returnsVector)]; // expected-warning {{'performSelector:' is incompatible with selectors that return a vector type}}
 124 }
 125
 126 @end