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+// RUN: %clang_cc1 -triple x86_64-apple-darwin9 -analyze -analyzer-checker=core,experimental.core -analyzer-store=region -analyzer-constraints=basic -verify -fblocks %s
+// RUN: %clang_cc1 -triple x86_64-apple-darwin9 -analyze -analyzer-checker=core,experimental.core -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);
+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);
+ }
+}