forked from OSchip/llvm-project
66 lines
2.2 KiB
Objective-C
66 lines
2.2 KiB
Objective-C
// RUN: %clang_cc1 -no-opaque-pointers %s -verify -o /dev/null
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// RUN: %clang_cc1 -no-opaque-pointers %s -triple x86_64-apple-darwin -emit-llvm -fsanitize=objc-cast -o - | FileCheck %s
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void p(const char*, ...);
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@interface NSArray
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+(NSArray*) arrayWithObjects: (id) first, ...;
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-(unsigned) count;
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@end
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@interface NSString
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-(const char*) cString;
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@end
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#define S(n) @#n
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#define L1(n) S(n+0),S(n+1)
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#define L2(n) L1(n+0),L1(n+2)
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#define L3(n) L2(n+0),L2(n+4)
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#define L4(n) L3(n+0),L3(n+8)
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#define L5(n) L4(n+0),L4(n+16)
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#define L6(n) L5(n+0),L5(n+32)
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// CHECK-LABEL: define{{.*}} void @t0
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void t0(void) {
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NSArray *array = [NSArray arrayWithObjects: L1(0), (void*)0];
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p("array.length: %d\n", [array count]);
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unsigned index = 0;
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for (NSString *i in array) { // expected-warning {{collection expression type 'NSArray *' may not respond}}
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// CHECK: [[expectedCls:%.*]] = load %struct._class_t*, {{.*}}, !nosanitize
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// CHECK-NEXT: [[kindOfClassSel:%.*]] = load i8*, i8** @OBJC_SELECTOR_REFERENCES{{.*}}, !nosanitize
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// CHECK-NEXT: [[expectedClsI8:%.*]] = bitcast %struct._class_t* [[expectedCls]] to i8*, !nosanitize
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// CHECK-NEXT: [[isCls:%.*]] = call zeroext i1 bitcast {{.*}}@objc_msgSend to i1 (i8*, i8*, {{.*}})(i8* noundef [[theItem:%.*]], i8* noundef [[kindOfClassSel]], i8* noundef [[expectedClsI8]]), !nosanitize
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// CHECK: br i1 [[isCls]]
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// CHECK: ptrtoint i8* [[theItem]] to i64, !nosanitize
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// CHECK-NEXT: call void @__ubsan_handle_invalid_objc_cast
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// CHECK-NEXT: unreachable, !nosanitize
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// CHECK: bitcast i8* [[theItem]]
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p("element %d: %s\n", index++, [i cString]);
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}
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}
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void t1(void) {
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NSArray *array = [NSArray arrayWithObjects: L6(0), (void*)0];
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p("array.length: %d\n", [array count]);
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unsigned index = 0;
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for (NSString *i in array) { // expected-warning {{collection expression type 'NSArray *' may not respond}}
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index++;
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if (index == 10)
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continue;
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p("element %d: %s\n", index, [i cString]);
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if (index == 55)
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break;
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}
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}
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// rdar://problem/9027663
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void t2(NSArray *array) {
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for (NSArray *array in array) { // expected-warning {{collection expression type 'NSArray *' may not respond}}
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}
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}
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