forked from OSchip/llvm-project
52 lines
2.7 KiB
Objective-C
52 lines
2.7 KiB
Objective-C
// RUN: clang-cc -triple x86_64-apple-darwin9 -analyze -checker-cfref --analyzer-store=basic -analyzer-constraints=basic --verify -fblocks %s &&
|
|
// RUN: clang-cc -triple x86_64-apple-darwin9 -analyze -checker-cfref --analyzer-store=basic-new-cast -analyzer-constraints=basic --verify -fblocks %s &&
|
|
// RUN: clang-cc -triple x86_64-apple-darwin9 -analyze -checker-cfref --analyzer-store=basic -analyzer-constraints=range --verify -fblocks %s &&
|
|
// RUN: clang-cc -triple x86_64-apple-darwin9 -analyze -checker-cfref --analyzer-store=basic-new-cast -analyzer-constraints=range --verify -fblocks %s &&
|
|
// RUN: clang-cc -triple x86_64-apple-darwin9 -analyze -checker-cfref --analyzer-store=region -analyzer-constraints=basic --verify -fblocks %s &&
|
|
// RUN: clang-cc -triple x86_64-apple-darwin9 -analyze -checker-cfref --analyzer-store=region -analyzer-constraints=range --verify -fblocks %s
|
|
|
|
// <rdar://problem/6440393> - A bunch of misc. failures involving evaluating
|
|
// these expressions and building CFGs. These tests are here to prevent
|
|
// regressions.
|
|
typedef long long int64_t;
|
|
@class NSString, NSDictionary;
|
|
typedef long NSInteger;
|
|
typedef unsigned long NSUInteger;
|
|
typedef unsigned char Boolean;
|
|
typedef const struct __CFDictionary * CFDictionaryRef;
|
|
|
|
extern Boolean CFDictionaryGetValueIfPresent(CFDictionaryRef theDict, const void *key, const void **value);
|
|
static void shazam(NSUInteger i, unsigned char **out);
|
|
|
|
void rdar_6440393_1(NSDictionary *dict) {
|
|
NSInteger x = 0;
|
|
unsigned char buf[10], *bufptr = buf;
|
|
if (!CFDictionaryGetValueIfPresent(0, dict, (void *)&x))
|
|
return;
|
|
shazam(x, &bufptr);
|
|
}
|
|
|
|
// <rdar://problem/6845148> - In this example we got a signedness
|
|
// mismatch between the literal '0' and the value of 'scrooge'. The
|
|
// trick is to have the evaluator convert the literal to an unsigned
|
|
// integer when doing a comparison with the pointer. This happens
|
|
// because of the transfer function logic of
|
|
// OSAtomicCompareAndSwap64Barrier, which doesn't have special casts
|
|
// in place to do this for us.
|
|
_Bool OSAtomicCompareAndSwap64Barrier( int64_t __oldValue, int64_t __newValue, volatile int64_t *__theValue );
|
|
extern id objc_lookUpClass(const char *name);
|
|
void rdar_6845148(id debug_yourself) {
|
|
if (!debug_yourself) {
|
|
const char *wacky = ((void *)0);
|
|
Class scrooge = wacky ? (Class)objc_lookUpClass(wacky) : ((void *)0);
|
|
OSAtomicCompareAndSwap64Barrier(0, (int64_t)scrooge, (int64_t*)&debug_yourself);
|
|
}
|
|
}
|
|
void rdar_6845148_b(id debug_yourself) {
|
|
if (!debug_yourself) {
|
|
const char *wacky = ((void *)0);
|
|
Class scrooge = wacky ? (Class)objc_lookUpClass(wacky) : ((void *)0);
|
|
OSAtomicCompareAndSwap64Barrier((int64_t)scrooge, 0, (int64_t*)&debug_yourself);
|
|
}
|
|
}
|