1 // RUN: %clang_analyze_cc1 -triple x86_64-apple-darwin9 -analyzer-checker=core,alpha.core -verify -fblocks %s
2 // expected-no-diagnostics
4 // A bunch of misc. failures involving evaluating these expressions and
5 // building CFGs. These tests are here to prevent regressions.
6 typedef long long int64_t;
7 @class NSString, NSDictionary;
8 typedef long NSInteger;
9 typedef unsigned long NSUInteger;
10 typedef unsigned char Boolean;
11 typedef const struct __CFDictionary * CFDictionaryRef;
13 extern Boolean CFDictionaryGetValueIfPresent(CFDictionaryRef theDict, const void *key, const void **value);
14 void shazam(NSUInteger i, unsigned char **out);
16 void rdar_6440393_1(NSDictionary *dict) {
18 unsigned char buf[10], *bufptr = buf;
19 if (!CFDictionaryGetValueIfPresent(0, dict, (void *)&x))
24 // In this example we got a signedness mismatch between the literal '0' and the
25 // value of 'scrooge'. The trick is to have the evaluator convert the literal
26 // to an unsigned integer when doing a comparison with the pointer. This
27 // happens because of the transfer function logic of
28 // OSAtomicCompareAndSwap64Barrier, which doesn't have special casts in place
30 _Bool OSAtomicCompareAndSwap64Barrier( int64_t __oldValue, int64_t __newValue, volatile int64_t *__theValue );
31 extern id objc_lookUpClass(const char *name);
32 void rdar_6845148(id debug_yourself) {
33 if (!debug_yourself) {
34 const char *wacky = ((void *)0);
35 Class scrooge = wacky ? (Class)objc_lookUpClass(wacky) : ((void *)0);
36 OSAtomicCompareAndSwap64Barrier(0, (int64_t)scrooge, (int64_t*)&debug_yourself);
39 void rdar_6845148_b(id debug_yourself) {
40 if (!debug_yourself) {
41 const char *wacky = ((void *)0);
42 Class scrooge = wacky ? (Class)objc_lookUpClass(wacky) : ((void *)0);
43 OSAtomicCompareAndSwap64Barrier((int64_t)scrooge, 0, (int64_t*)&debug_yourself);