xref: /llvm-project/clang/test/CodeGenObjC/for-in.m (revision 0f1c1be1968076d6f96f8a7bcc4a15cf195ecd97)
1// RUN: %clang_cc1 %s -verify -o /dev/null
2// RUN: %clang_cc1 %s -triple x86_64-apple-darwin -emit-llvm -fsanitize=objc-cast -o - | FileCheck %s
3
4void p(const char*, ...);
5
6@interface NSArray
7+(NSArray*) arrayWithObjects: (id) first, ...;
8-(unsigned) count;
9@end
10@interface NSString
11-(const char*) cString;
12@end
13
14#define S(n) @#n
15#define L1(n) S(n+0),S(n+1)
16#define L2(n) L1(n+0),L1(n+2)
17#define L3(n) L2(n+0),L2(n+4)
18#define L4(n) L3(n+0),L3(n+8)
19#define L5(n) L4(n+0),L4(n+16)
20#define L6(n) L5(n+0),L5(n+32)
21
22// CHECK-LABEL: define{{.*}} void @t0
23void t0(void) {
24  NSArray *array = [NSArray arrayWithObjects: L1(0), (void*)0];
25
26  p("array.length: %d\n", [array count]);
27  unsigned index = 0;
28  for (NSString *i in array) {	// expected-warning {{collection expression type 'NSArray *' may not respond}}
29
30    // CHECK:      [[expectedCls:%.*]] = load ptr, {{.*}}, !nosanitize
31    // CHECK-NEXT: [[kindOfClassSel:%.*]] = load ptr, ptr @OBJC_SELECTOR_REFERENCES{{.*}}, !nosanitize
32    // CHECK-NEXT: [[isCls:%.*]] = call zeroext i1 @objc_msgSend(ptr noundef [[theItem:%.*]], ptr noundef [[kindOfClassSel]], ptr noundef [[expectedCls]]), !nosanitize
33    // CHECK: br i1 [[isCls]]
34
35    // CHECK: ptrtoint ptr [[theItem]] to i64, !nosanitize
36    // CHECK-NEXT: call void @__ubsan_handle_invalid_objc_cast
37    // CHECK-NEXT: unreachable, !nosanitize
38
39
40    p("element %d: %s\n", index++, [i cString]);
41  }
42}
43
44void t1(void) {
45  NSArray *array = [NSArray arrayWithObjects: L6(0), (void*)0];
46
47  p("array.length: %d\n", [array count]);
48  unsigned index = 0;
49  for (NSString *i in array) {	// expected-warning {{collection expression type 'NSArray *' may not respond}}
50    index++;
51    if (index == 10)
52      continue;
53    p("element %d: %s\n", index, [i cString]);
54    if (index == 55)
55      break;
56  }
57}
58
59void t2(NSArray *array) {
60  for (NSArray *array in array) { // expected-warning {{collection expression type 'NSArray *' may not respond}}
61  }
62}
63