• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1 // RUN: %clang_cc1 -analyze -analyzer-checker=core,osx.coreFoundation.CFNumber,osx.cocoa.RetainCount -analyzer-store=region -analyzer-constraints=range -verify -triple x86_64-apple-darwin9 %s
2 
3 typedef signed long CFIndex;
4 typedef const struct __CFAllocator * CFAllocatorRef;
5 enum { 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 };
14 typedef CFIndex CFNumberType;
15 typedef const struct __CFNumber * CFNumberRef;
16 extern CFNumberRef CFNumberCreate(CFAllocatorRef allocator, CFNumberType theType, const void *valuePtr);
17 
f1(unsigned char x)18 CFNumberRef f1(unsigned char x) {
19   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}}
20 }
21 
f2(unsigned short x)22 __attribute__((cf_returns_retained)) CFNumberRef f2(unsigned short x) {
23   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 input integer will be lost}}
24 }
25 
26 // test that the attribute overrides the naming convention.
CreateNum(unsigned char x)27 __attribute__((cf_returns_not_retained)) CFNumberRef CreateNum(unsigned char x) {
28   return CFNumberCreate(0, kCFNumberSInt8Type, &x); // expected-warning{{leak}}
29 }
30 
f3(unsigned i)31 CFNumberRef f3(unsigned i) {
32   return CFNumberCreate(0, kCFNumberLongType, &i); // expected-warning{{A 32 bit integer is used to initialize a CFNumber object that represents a 64 bit integer}}
33 }
34