48 lines · c
1// RUN: %clang_analyze_cc1 -analyzer-checker=core,osx.coreFoundation.CFNumber,osx.cocoa.RetainCount -verify -triple x86_64-apple-darwin9 %s2 3typedef signed long CFIndex;4typedef const struct __CFAllocator * CFAllocatorRef;5enum { kCFNumberSInt8Type = 1, kCFNumberSInt16Type = 2,6 kCFNumberSInt32Type = 3, kCFNumberSInt64Type = 4,7 kCFNumberFloat32Type = 5, kCFNumberFloat64Type = 6,8 kCFNumberCharType = 7, kCFNumberShortType = 8,9 kCFNumberIntType = 9, kCFNumberLongType = 10,10 kCFNumberLongLongType = 11, kCFNumberFloatType = 12,11 kCFNumberDoubleType = 13, kCFNumberCFIndexType = 14,12 kCFNumberNSIntegerType = 15, kCFNumberCGFloatType = 16,13 kCFNumberMaxType = 16 };14typedef CFIndex CFNumberType;15typedef const struct __CFNumber * CFNumberRef;16typedef unsigned char Boolean;17extern CFNumberRef CFNumberCreate(CFAllocatorRef allocator, CFNumberType theType, const void *valuePtr);18Boolean CFNumberGetValue(CFNumberRef number, CFNumberType theType, void *valuePtr);19 20__attribute__((cf_returns_retained)) CFNumberRef f1(unsigned char x) {21 return CFNumberCreate(0, kCFNumberSInt16Type, &x); // expected-warning{{An 8-bit integer is used to initialize a CFNumber object that represents a 16-bit integer; 8 bits of the CFNumber value will be garbage}}22}23 24__attribute__((cf_returns_retained)) CFNumberRef f2(unsigned short x) {25 return CFNumberCreate(0, kCFNumberSInt8Type, &x); // expected-warning{{A 16-bit integer is used to initialize a CFNumber object that represents an 8-bit integer; 8 bits of the integer value will be lost}}26}27 28// test that the attribute overrides the naming convention.29__attribute__((cf_returns_not_retained)) CFNumberRef CreateNum(unsigned char x) {30 return CFNumberCreate(0, kCFNumberSInt8Type, &x); // expected-warning{{leak}}31}32 33__attribute__((cf_returns_retained)) CFNumberRef f3(unsigned i) {34 return CFNumberCreate(0, kCFNumberLongType, &i); // expected-warning{{A 32-bit integer is used to initialize a CFNumber object that represents a 64-bit integer}}35}36 37unsigned char getValueTest1(CFNumberRef x) {38 unsigned char scalar = 0;39 CFNumberGetValue(x, kCFNumberSInt16Type, &scalar); // expected-warning{{A CFNumber object that represents a 16-bit integer is used to initialize an 8-bit integer; 8 bits of the CFNumber value will overwrite adjacent storage}}40 return scalar;41}42 43unsigned char getValueTest2(CFNumberRef x) {44 unsigned short scalar = 0;45 CFNumberGetValue(x, kCFNumberSInt8Type, &scalar); // expected-warning{{A CFNumber object that represents an 8-bit integer is used to initialize a 16-bit integer; 8 bits of the integer value will be garbage}}46 return scalar;47}48