undef-value-param.m
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// RUN: %clang_analyze_cc1 -analyzer-checker=core,osx -analyzer-output=text -verify %s
// RUN: %clang_analyze_cc1 -analyzer-checker=core,osx -analyzer-output=plist-multi-file %s -o %t.plist
// RUN: %normalize_plist <%t.plist | diff -ub %S/Inputs/expected-plists/undef-value-param.m.plist -
typedef signed char BOOL;
@protocol NSObject - (BOOL)isEqual:(id)object; @end
@interface NSObject <NSObject> {}
+(id)alloc;
+(id)new;
-(id)init;
-(id)autorelease;
-(id)copy;
- (Class)class;
-(id)retain;
@end
typedef const void * CFTypeRef;
extern void CFRelease(CFTypeRef cf);
@interface Cell : NSObject
- (void)test;
@end
@interface SpecialString
+ (id)alloc;
- (oneway void)release;
@end
typedef SpecialString* SCDynamicStoreRef;
static void CreateRef(SCDynamicStoreRef *storeRef, unsigned x);
static void CreateRefUndef(SCDynamicStoreRef *storeRef, unsigned x);
SCDynamicStoreRef anotherCreateRef(unsigned *err, unsigned x);
@implementation Cell
- (void) test {
SCDynamicStoreRef storeRef = 0;
CreateRef(&storeRef, 4);
//expected-note@-1{{Calling 'CreateRef'}}
//expected-note@-2{{Returning from 'CreateRef'}}
CFRelease(storeRef); //expected-warning {{Null pointer argument in call to CFRelease}}
//expected-note@-1{{Null pointer argument in call to CFRelease}}
}
- (void)test2 {
SCDynamicStoreRef storeRef; // expected-note {{'storeRef' declared without an initial value}}
CreateRefUndef(&storeRef, 4);
//expected-note@-1{{Calling 'CreateRefUndef'}}
//expected-note@-2{{Returning from 'CreateRefUndef'}}
CFRelease(storeRef); //expected-warning {{1st function call argument is an uninitialized value}}
//expected-note@-1{{1st function call argument is an uninitialized value}}
}
@end
static void CreateRef(SCDynamicStoreRef *storeRef, unsigned x) {
unsigned err = 0;
SCDynamicStoreRef ref = anotherCreateRef(&err, x);
if (err) {
//expected-note@-1{{Assuming 'err' is not equal to 0}}
//expected-note@-2{{Taking true branch}}
CFRelease(ref);
ref = 0; // expected-note{{nil object reference stored to 'ref'}}
}
*storeRef = ref; // expected-note{{nil object reference stored to 'storeRef'}}
}
static void CreateRefUndef(SCDynamicStoreRef *storeRef, unsigned x) {
unsigned err = 0;
SCDynamicStoreRef ref = anotherCreateRef(&err, x);
if (err) {
//expected-note@-1{{Assuming 'err' is not equal to 0}}
//expected-note@-2{{Taking true branch}}
CFRelease(ref);
return; // expected-note{{Returning without writing to '*storeRef'}}
}
*storeRef = ref;
}