111 lines
2.9 KiB
Mathematica
111 lines
2.9 KiB
Mathematica
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// RUN: %clang_cc1 -fblocks -analyze -analyzer-checker=osx.cocoa.UnusedIvars -verify -Wno-objc-root-class %s
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//===--- BEGIN: Delta-debugging reduced headers. --------------------------===//
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@protocol NSObject
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- (id)retain;
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- (oneway void)release;
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@end
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@interface NSObject <NSObject> {}
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- (id)init;
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+ (id)alloc;
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@end
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//===--- END: Delta-debugging reduced headers. ----------------------------===//
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// This test case tests the basic functionality of the unused ivar test.
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@interface TestA {
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@private
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int x; // expected-warning {{Instance variable 'x' in class 'TestA' is never used}}
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}
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@end
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@implementation TestA @end
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// This test case tests whether the unused ivar check handles blocks that
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// reference an instance variable. (<rdar://problem/7075531>)
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@interface TestB : NSObject {
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@private
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id _ivar; // no-warning
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}
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@property (readwrite,retain) id ivar;
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@end
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@implementation TestB
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- (id)ivar {
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__attribute__((__blocks__(byref))) id value = ((void*)0);
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void (^b)() = ^{ value = _ivar; };
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b();
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return value;
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}
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- (void)setIvar:(id)newValue {
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void (^b)() = ^{ [_ivar release]; _ivar = [newValue retain]; };
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b();
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}
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@end
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//===----------------------------------------------------------------------===//
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// <rdar://problem/6260004> Detect that ivar is in use, if used in category
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// in the same file as the implementation
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//===----------------------------------------------------------------------===//
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@protocol Protocol6260004
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- (id) getId;
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@end
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@interface RDar6260004 {
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@private
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id x; // no-warning
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}
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@end
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@implementation RDar6260004 @end
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@implementation RDar6260004 (Protocol6260004)
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- (id) getId {
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return x;
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}
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@end
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//===----------------------------------------------------------------------===//
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// <rdar://problem/7254495> - ivars referenced by lexically nested functions
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// should not be flagged as unused
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//===----------------------------------------------------------------------===//
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@interface RDar7254495 {
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@private
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int x; // no-warning
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}
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@end
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@implementation RDar7254495
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int radar_7254495(RDar7254495 *a) {
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return a->x;
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}
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@end
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//===----------------------------------------------------------------------===//
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// <rdar://problem/7353683> - consult attribute((unused)) to silence warnings
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// about unused instance variables
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//===----------------------------------------------------------------------===//
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@interface RDar7353683 {
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@private
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id x __attribute__((unused));
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}
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@end
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@implementation RDar7353683
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@end
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//===----------------------------------------------------------------------===//
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// <rdar://problem/8481311> Unused bitfield ivars trigger cause weird
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// diagnostic: "Instance variable '' in class..."
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//===----------------------------------------------------------------------===//
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@interface RDar8481311 {
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@private
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unsigned bitfield:1; // expected-warning {{Instance variable 'bitfield' in class 'RDar8481311' is never used}}
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}
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@end
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@implementation RDar8481311
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@end
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