test/Analysis/CFNumber.c

   1 // RUN: %clang_cc1 -analyze -analyzer-checker=core,osx.coreFoundation.CFNumber,osx.cocoa.RetainCount -analyzer-store=region -analyzer-constraints=basic -verify -triple x86_64-apple-darwin9 %s
   2 // 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
   3
   4 typedef signed long CFIndex;
   5 typedef const struct __CFAllocator * CFAllocatorRef;
   6 enum { kCFNumberSInt8Type = 1, kCFNumberSInt16Type = 2,
   7        kCFNumberSInt32Type = 3, kCFNumberSInt64Type = 4,
   8        kCFNumberFloat32Type = 5, kCFNumberFloat64Type = 6,
   9        kCFNumberCharType = 7, kCFNumberShortType = 8,
  10        kCFNumberIntType = 9, kCFNumberLongType = 10,
  11        kCFNumberLongLongType = 11, kCFNumberFloatType = 12,
  12        kCFNumberDoubleType = 13, kCFNumberCFIndexType = 14,
  13        kCFNumberNSIntegerType = 15, kCFNumberCGFloatType = 16,
  14        kCFNumberMaxType = 16 };
  15 typedef CFIndex CFNumberType;
  16 typedef const struct __CFNumber * CFNumberRef;
  17 extern CFNumberRef CFNumberCreate(CFAllocatorRef allocator, CFNumberType theType, const void *valuePtr);
  18
  19 CFNumberRef f1(unsigned char x) {
  20   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.}}
  21 }
  22
  23 __attribute__((cf_returns_retained)) CFNumberRef f2(unsigned short x) {
  24   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.}}
  25 }
  26
  27 // test that the attribute overrides the naming convention.
  28 __attribute__((cf_returns_not_retained)) CFNumberRef CreateNum(unsigned char x) {
  29   return CFNumberCreate(0, kCFNumberSInt8Type, &x); // expected-warning{{leak}}
  30 }
  31
  32 CFNumberRef f3(unsigned i) {
  33   return CFNumberCreate(0, kCFNumberLongType, &i); // expected-warning{{A 32 bit integer is used to initialize a CFNumber object that represents a 64 bit integer.}}
  34 }