1 // RUN: %clang_cc1 -fblocks -analyze -analyzer-checker=osx.cocoa.UnusedIvars -verify -Wno-objc-root-class %s 2 3 //===--- BEGIN: Delta-debugging reduced headers. --------------------------===// 4 5 @protocol NSObject 6 - (id)retain; 7 - (oneway void)release; 8 @end 9 @interface NSObject <NSObject> {} 10 - (id)init; 11 + (id)alloc; 12 @end 13 14 //===--- END: Delta-debugging reduced headers. ----------------------------===// 15 16 // This test case tests the basic functionality of the unused ivar test. 17 @interface TestA { 18 @private 19 int x; // expected-warning {{Instance variable 'x' in class 'TestA' is never used}} 20 } 21 @end 22 @implementation TestA @end 23 24 // This test case tests whether the unused ivar check handles blocks that 25 // reference an instance variable. (<rdar://problem/7075531>) 26 @interface TestB : NSObject { 27 @private 28 id _ivar; // no-warning 29 } 30 @property (readwrite,retain) id ivar; 31 @end 32 33 @implementation TestB 34 - (id)ivar { 35 __attribute__((__blocks__(byref))) id value = ((void*)0); 36 void (^b)() = ^{ value = _ivar; }; 37 b(); 38 return value; 39 } 40 41 - (void)setIvar:(id)newValue { 42 void (^b)() = ^{ [_ivar release]; _ivar = [newValue retain]; }; 43 b(); 44 } 45 @end 46 47 //===----------------------------------------------------------------------===// 48 // <rdar://problem/6260004> Detect that ivar is in use, if used in category 49 // in the same file as the implementation 50 //===----------------------------------------------------------------------===// 51 52 @protocol Protocol6260004 53 - (id) getId; 54 @end 55 56 @interface RDar6260004 { 57 @private 58 id x; // no-warning 59 } 60 @end 61 @implementation RDar6260004 @end 62 @implementation RDar6260004 (Protocol6260004) 63 - (id) getId { 64 return x; 65 } 66 @end 67 68 //===----------------------------------------------------------------------===// 69 // <rdar://problem/7254495> - ivars referenced by lexically nested functions 70 // should not be flagged as unused 71 //===----------------------------------------------------------------------===// 72 73 @interface RDar7254495 { 74 @private 75 int x; // no-warning 76 } 77 @end 78 79 @implementation RDar7254495 80 int radar_7254495(RDar7254495 *a) { 81 return a->x; 82 } 83 @end 84 85 //===----------------------------------------------------------------------===// 86 // <rdar://problem/7353683> - consult attribute((unused)) to silence warnings 87 // about unused instance variables 88 //===----------------------------------------------------------------------===// 89 90 @interface RDar7353683 { 91 @private 92 id x __attribute__((unused)); 93 } 94 @end 95 96 @implementation RDar7353683 97 @end 98 //===----------------------------------------------------------------------===// 99 // <rdar://problem/8481311> Unused bitfield ivars trigger cause weird 100 // diagnostic: "Instance variable '' in class..." 101 //===----------------------------------------------------------------------===// 102 103 @interface RDar8481311 { 104 @private 105 unsigned bitfield:1; // expected-warning {{Instance variable 'bitfield' in class 'RDar8481311' is never used}} 106 } 107 @end 108 109 @implementation RDar8481311 110 @end 111 112 @class NSString; 113 @interface Radar11059352_1 { 114 @private 115 NSString *_pathString; 116 } 117 @property (readonly, strong) NSString *pathString; 118 @end 119 120 @interface Radar11059352 { 121 @private 122 Radar11059352_1 *_workspacePath; 123 } 124 @end 125 126 @implementation Radar11059352 127 128 - (void)useWorkspace { 129 NSString *workspacePathString = _workspacePath.pathString; 130 } 131 @end
