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
4 void p(const char*, ...);
7 +(NSArray*) arrayWithObjects: (id) first, ...;
11 -(const char*) cString;
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)
22 // CHECK-LABEL: define{{.*}} void @t0
24 NSArray *array = [NSArray arrayWithObjects: L1(0), (void*)0];
26 p("array.length: %d\n", [array count]);
28 for (NSString *i in array) { // expected-warning {{collection expression type 'NSArray *' may not respond}}
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]]
35 // CHECK: ptrtoint ptr [[theItem]] to i64, !nosanitize
36 // CHECK-NEXT: call void @__ubsan_handle_invalid_objc_cast
37 // CHECK-NEXT: unreachable, !nosanitize
40 p("element %d: %s\n", index++, [i cString]);
45 NSArray *array = [NSArray arrayWithObjects: L6(0), (void*)0];
47 p("array.length: %d\n", [array count]);
49 for (NSString *i in array) { // expected-warning {{collection expression type 'NSArray *' may not respond}}
53 p("element %d: %s\n", index, [i cString]);
59 void t2(NSArray *array) {
60 for (NSArray *array in array) { // expected-warning {{collection expression type 'NSArray *' may not respond}}