зеркало из https://github.com/microsoft/clang.git
79 строки
1.8 KiB
Objective-C
79 строки
1.8 KiB
Objective-C
// RUN: clang -fsyntax-only %s
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// XFAIL
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// <rdar://problem/6212771>
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#define nil ((void*) 0)
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@interface A
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@property int x;
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@end
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@interface B : A
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@end
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// Basic checks...
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id f0(int cond, id a, void *b) {
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return cond ? a : b;
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}
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A *f0_a(int cond, A *a, void *b) {
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return cond ? a : b;
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}
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id f1(int cond, id a) {
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return cond ? a : nil;
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}
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A *f1_a(int cond, A *a) {
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return cond ? a : nil;
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}
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// Check interaction with qualified id
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@protocol P0 @end
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id f2(int cond, id<P0> a, void *b) {
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return cond ? a : b;
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}
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id f3(int cond, id<P0> a) {
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return cond ? a : nil;
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}
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// Check that result actually has correct type.
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// Using properties is one way to find the compiler internal type of a
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// conditional expression. Simple assignment doesn't work because if
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// the type is id then it can be implicitly promoted.
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@protocol P1
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@property int x;
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@end
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int f5(int cond, id<P1> a, id<P1> b) {
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// This should result in something with id type, currently. This is
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// almost certainly wrong and should be fixed.
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return (cond ? a : b).x; // expected-error {{member reference base type ('id') is not a structure or union}}
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}
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int f5_a(int cond, A *a, A *b) {
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return (cond ? a : b).x;
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}
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int f5_b(int cond, A *a, B *b) {
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return (cond ? a : b).x;
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}
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int f6(int cond, id<P1> a, void *b) {
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// This should result in something with id type, currently.
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return (cond ? a : b).x; // expected-error {{member reference base type ('id') is not a structure or union}}
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}
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int f7(int cond, id<P1> a) {
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return (cond ? a : nil).x;
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}
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int f8(int cond, id<P1> a, A *b) {
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// GCC regards this as a warning (comparison of distinct Objective-C types lacks a cast)
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return a == b; // expected-error {{invalid operands to binary expression}}
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}
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int f9(int cond, id<P1> a, A *b) {
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return (cond ? a : b).x; // expected-error {{incompatible operand types}}
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}
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