clang/test/Analysis/diagnostics/macros.m

   1 // RUN: %clang_analyze_cc1 -analyzer-checker=core,osx -fblocks -analyzer-output=text -verify %s
   2
   3 #include "../Inputs/system-header-simulator-objc.h"
   4
   5 @interface NSDictionary : NSObject
   6 - (NSUInteger)count;
   7 - (id)objectForKey:(id)aKey;
   8 - (NSEnumerator *)keyEnumerator;
   9 @end
  10 @interface NSMutableDictionary : NSDictionary
  11 - (void)setObject:(id)anObject forKey:(id <NSCopying>)aKey;
  12 @end
  13
  14 void testBOOLMacro(BOOL b) {
  15   if (b == YES) { // expected-note {{Assuming 'b' is equal to YES}}
  16                   // expected-note@-1 {{Taking true branch}}
  17     char *p = NULL;// expected-note {{'p' initialized to a null pointer value}}
  18     *p = 7;  // expected-warning {{Dereference of null pointer (loaded from variable 'p')}}
  19              // expected-note@-1 {{Dereference of null pointer (loaded from variable 'p')}}
  20   }
  21 }
  22
  23 void testNilMacro(NSMutableDictionary *d, NSObject *o) {
  24   if (o == nil) // expected-note {{Assuming 'o' is equal to nil}}
  25                 // expected-note@-1 {{Taking true branch}}
  26     [d setObject:o forKey:[o description]]; // expected-warning {{Key argument to 'setObject:forKey:' cannot be nil}}
  27                                             // expected-note@-1 {{'description' not called because the receiver is nil}}
  28                                             // expected-note@-2 {{Key argument to 'setObject:forKey:' cannot be nil}}
  29
  30   return;
  31 }