1// RUN: %clang_cc1 %s -fsyntax-only -fblocks -verify -Wno-unreachable-code
2
3// rdar://6597252
4Class test1(Class X) {
5  return 1 ? X : X;
6}
7
8
9// rdar://6079877
10void test2() {
11  id str = @"foo"
12          "bar\0"    // no-warning
13          @"baz"  " blarg";
14  id str2 = @"foo"
15            "bar"
16           @"baz"
17           " b\0larg";  // no-warning
18
19
20  if (@encode(int) == "foo") { }  // expected-warning {{result of comparison against @encode is unspecified}}
21}
22
23#define MAX(A,B) ({ __typeof__(A) __a = (A); __typeof__(B) __b = (B); __a < __b ? __b : __a; })
24void (^foo)(int, int) = ^(int x, int y) { int z = MAX(x, y); };
25
26
27
28// rdar://8445858
29@class Object;
30static Object *g;
31void test3(Object *o) {
32  // this is ok.
33  __sync_bool_compare_and_swap(&g, 0, o);
34}
35
36@class Incomplete_ObjC_class; // expected-note{{forward declaration of class here}}
37struct Incomplete_struct; // expected-note {{forward declaration}}
38
39void test_encode() {
40  (void)@encode(Incomplete_ObjC_class); // expected-error {{incomplete type}}
41  (void)@encode(struct Incomplete_struct); // expected-error {{incomplete type}}
42  (void)@encode(Incomplete_ObjC_class*);
43  (void)@encode(id);
44}
45