forked from OSchip/llvm-project
55 lines
1.4 KiB
Objective-C
55 lines
1.4 KiB
Objective-C
// RUN: %clang_cc1 -analyze -analyzer-store=region -analyzer-constraints=range -fblocks -analyzer-opt-analyze-nested-blocks -analyzer-checker=deadcode.IdempotentOperations -verify %s
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typedef signed char BOOL;
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typedef unsigned long NSUInteger;
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typedef struct _NSZone NSZone;
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@protocol NSObject - (BOOL)isEqual:(id)object;
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@end
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@interface NSObject {}
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@property int locked;
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@property(nonatomic, readonly) NSObject *media;
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@end
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// <rdar://problem/8725041> - Don't flag idempotent operation warnings when
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// a method may invalidate an instance variable.
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@interface Rdar8725041 : NSObject {
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id _attribute;
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}
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- (void) method2;
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@end
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@implementation Rdar8725041
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- (BOOL) method1 {
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BOOL needsUpdate = (BOOL)0;
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id oldAttribute = _attribute;
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[self method2];
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needsUpdate |= (_attribute != oldAttribute); // no-warning
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return needsUpdate;
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}
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- (void) method2
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{
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_attribute = ((void*)0);
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}
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@end
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// Test that the idempotent operations checker works in the prescence
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// of property expressions.
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void pr9116(NSObject *placeholder) {
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int x = placeholder.media.locked = placeholder ? 1 : 0;
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}
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// <rdar://problem/9130239>: Test that calling property setters doesn't
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// trigger an assertion failure when the object is nil.
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@interface RDar9130239
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@property (assign) id delegate;
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@end
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void test_RDar9130239(RDar9130239 *x) {
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if (x)
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return;
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x.delegate = x; // no-warning
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}
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