forked from OSchip/llvm-project
68 lines
1.9 KiB
Objective-C
68 lines
1.9 KiB
Objective-C
// RUN: %clang_analyze_cc1 -fobjc-arc -analyzer-checker=core,debug.ExprInspection -verify %s
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void clang_analyzer_eval(int);
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void clang_analyzer_warnIfReached(void);
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extern void __assert_fail (__const char *__assertion, __const char *__file,
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unsigned int __line, __const char *__function)
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__attribute__ ((__noreturn__));
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#define assert(expr) \
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((expr) ? (void)(0) : __assert_fail (#expr, __FILE__, __LINE__, __func__))
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@protocol NSObject
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+ (nonnull instancetype)alloc;
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- (nonnull instancetype)init;
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@end
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@interface NSObject <NSObject> {}
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@end
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@interface NSError : NSObject {
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@public
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int x;
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}
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@end
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@interface SomeClass : NSObject
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+ (int)doSomethingWithError:(NSError *__autoreleasing *)error;
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@end
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@implementation SomeClass
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+ (int)doSomethingWithError:(NSError *__autoreleasing *)error {
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if (error) {
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NSError *e = [[NSError alloc] init];
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assert(e);
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e->x = 5;
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*error = e;
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clang_analyzer_eval(*error != 0); // expected-warning{{TRUE}}
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}
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return 0;
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}
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@end
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void testStrongOutParam(void) {
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NSError *error;
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clang_analyzer_eval(error != 0); // expected-warning{{FALSE}}
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int ok = [SomeClass doSomethingWithError:&error];
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clang_analyzer_eval(ok); // expected-warning{{FALSE}}
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clang_analyzer_eval(error != 0); // expected-warning{{TRUE}}
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clang_analyzer_eval(error->x == 5); // expected-warning{{TRUE}}
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}
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void testAutoreleasingOutParam(void) {
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NSError *__autoreleasing error;
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clang_analyzer_eval(error != 0); // expected-warning{{FALSE}}
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int ok = [SomeClass doSomethingWithError:&error];
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clang_analyzer_eval(ok); // expected-warning{{FALSE}}
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clang_analyzer_eval(error != 0); // expected-warning{{TRUE}}
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clang_analyzer_eval(error->x == 5); // expected-warning{{TRUE}}
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}
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void testNilOutParam(void) {
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int ok = [SomeClass doSomethingWithError:(void *)0];
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clang_analyzer_eval(ok); // expected-warning{{FALSE}}
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}
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