85 lines
3.2 KiB
Objective-C
85 lines
3.2 KiB
Objective-C
// RUN: %clang_cc1 -analyze -analyzer-checker=core,osx.cocoa.RetainCount -analyzer-store=region -analyzer-constraints=range -verify -fobjc-gc %s -Wno-implicit-function-declaration
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//===----------------------------------------------------------------------===//
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// The following code is reduced using delta-debugging from
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// Foundation.h and CoreFoundation.h (Mac OS X).
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//
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// It includes the basic definitions for the test cases below.
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// Not directly including [Core]Foundation.h directly makes this test case
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// both svelte and portable to non-Mac platforms.
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//===----------------------------------------------------------------------===//
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typedef const void * CFTypeRef;
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void CFRelease(CFTypeRef cf);
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CFTypeRef CFRetain(CFTypeRef cf);
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CFTypeRef CFMakeCollectable(CFTypeRef cf);
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typedef const struct __CFAllocator * CFAllocatorRef;
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typedef double CFTimeInterval;
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typedef CFTimeInterval CFAbsoluteTime;
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typedef const struct __CFDate * CFDateRef;
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extern CFDateRef CFDateCreate(CFAllocatorRef allocator, CFAbsoluteTime at);
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extern CFAbsoluteTime CFDateGetAbsoluteTime(CFDateRef theDate);
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typedef struct objc_object {} *id;
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typedef signed char BOOL;
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static __inline__ __attribute__((always_inline)) id NSMakeCollectable(CFTypeRef cf) { return 0; }
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@protocol NSObject - (BOOL)isEqual:(id)object;
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- (oneway void)release;
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- (id)retain;
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@end
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@class NSArray;
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//===----------------------------------------------------------------------===//
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// Test cases.
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//===----------------------------------------------------------------------===//
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CFAbsoluteTime CFAbsoluteTimeGetCurrent();
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CFAbsoluteTime f1_use_after_release() {
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CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
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CFDateRef date = CFDateCreate(0, t);
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CFRetain(date);
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[NSMakeCollectable(date) release];
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CFDateGetAbsoluteTime(date); // no-warning
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CFRelease(date);
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t = CFDateGetAbsoluteTime(date); // expected-warning{{Reference-counted object is used after it is released}}
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return t;
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}
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// The following two test cases verifies that CFMakeCollectable is a no-op
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// in non-GC mode and a "release" in GC mode.
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CFAbsoluteTime f2_use_after_release() {
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CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
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CFDateRef date = CFDateCreate(0, t);
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CFRetain(date);
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[(id) CFMakeCollectable(date) release];
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CFDateGetAbsoluteTime(date); // no-warning
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CFRelease(date);
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t = CFDateGetAbsoluteTime(date); // expected-warning{{Reference-counted object is used after it is released}}
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return t;
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}
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CFAbsoluteTime f2_noleak() {
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CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
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CFDateRef date = CFDateCreate(0, t);
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CFRetain(date);
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[(id) CFMakeCollectable(date) release];
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CFDateGetAbsoluteTime(date); // no-warning
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t = CFDateGetAbsoluteTime(date); // no-warning
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CFRelease(date); // no-warning
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return t;
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}
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void f3_leak_with_gc() {
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CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); // expected-warning 2 {{leak}}
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[[(id) date retain] release];
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}
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// The following test case verifies that we "stop tracking" a retained object
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// when it is passed as an argument to an implicitly defined function.
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CFAbsoluteTime f4() {
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CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
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CFDateRef date = CFDateCreate(0, t);
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CFRetain(date);
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some_implicitly_defined_function_stop_tracking(date); // no-warning
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return t;
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}
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