arc-ptr-comparison.mm
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// RUN: %clang_cc1 -std=c++11 -triple x86_64-apple-darwin11 -fsyntax-only -fobjc-arc -verify %s
// RUN: %clang_cc1 -std=c++11 -triple x86_64-apple-darwin11 -fsyntax-only -verify -DNOARC %s
#ifdef NOARC
// expected-no-diagnostics
#endif
int testObjCComparisonRules(void *v, id x, id y) {
return v == x;
#ifndef NOARC
// expected-error@-2 {{implicit conversion of Objective-C pointer type 'id' to C pointer type 'void *' requires a bridged cast}}
// expected-note@-3 {{use __bridge to convert directly (no change in ownership)}}
// expected-note@-4 {{use __bridge_retained to make an ARC object available as a +1 'void *'}}
#endif
return v >= x;
#ifndef NOARC
// expected-error@-2 {{implicit conversion of Objective-C pointer type 'id' to C pointer type 'void *' requires a bridged cast}}
// expected-note@-3 {{use __bridge to convert directly (no change in ownership)}}
// expected-note@-4 {{use __bridge_retained to make an ARC object available as a +1 'void *'}}
#endif
return v == (id)(void *)0; // OK
return v == nullptr; // OK
return v == (void *)0;
return x == y;
}
@class A;
int testMixedQualComparisonRules(void *v, const void *cv, A *a, const A *ca) {
return cv == ca;
#ifndef NOARC
// expected-error@-2 {{implicit conversion of Objective-C pointer type 'const A *' to C pointer type 'const void *' requires a bridged cast}}
// expected-note@-3 {{use __bridge to convert directly (no change in ownership)}}
// expected-note@-4 {{use __bridge_retained to make an ARC object available as a +1 'const void *'}}
#endif
// FIXME: The "to" type in this diagnostic is wrong; we should convert to "const void *".
return v == ca;
#ifndef NOARC
// expected-error@-2 {{implicit conversion of Objective-C pointer type 'const A *' to C pointer type 'void *' requires a bridged cast}}
// expected-note@-3 {{use __bridge to convert directly (no change in ownership)}}
// expected-note@-4 {{use __bridge_retained to make an ARC object available as a +1 'void *'}}
#endif
return cv == a;
#ifndef NOARC
// expected-error@-2 {{implicit conversion of Objective-C pointer type 'A *' to C pointer type 'const void *' requires a bridged cast}}
// expected-note@-3 {{use __bridge to convert directly (no change in ownership)}}
// expected-note@-4 {{use __bridge_retained to make an ARC object available as a +1 'const void *'}}
#endif
// FIXME: Shouldn't these be rejected in ARC mode too?
return ca == cv;
return a == cv;
return ca == v;
}