57 lines
2.0 KiB
Mathematica
57 lines
2.0 KiB
Mathematica
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// RUN: %clang_cc1 -triple x86_64-apple-darwin11 -fsyntax-only -fblocks -Wcast-qual -verify %s
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// rdar://10597832
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typedef const void *CFTypeRef;
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typedef const struct __CFString *CFStringRef;
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@class NSString;
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@interface NSString
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@end
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CFTypeRef CFCreateSomething();
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CFStringRef CFCreateString();
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CFTypeRef CFGetSomething();
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CFStringRef CFGetString();
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id CreateSomething();
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NSString *CreateNSString();
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void from_cf() {
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id obj1 = (__bridge_transfer id)CFCreateSomething(); // expected-warning {{'__bridge_transfer' casts have no effect when not using ARC}}
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id obj2 = (__bridge_transfer NSString*)CFCreateString(); // expected-warning {{'__bridge_transfer' casts have no effect when not using ARC}}
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(__bridge int*)CFCreateSomething(); // expected-warning {{expression result unused}} expected-warning {{cast from 'const void *' to 'int *' drops const qualifier}}
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id obj3 = (__bridge id)CFGetSomething();
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id obj4 = (__bridge NSString*)CFGetString();
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}
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void to_cf(id obj) {
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CFTypeRef cf1 = (__bridge_retained CFTypeRef)CreateSomething(); // expected-warning {{'__bridge_retained' casts have no effect when not using ARC}}
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CFStringRef cf2 = (__bridge_retained CFStringRef)CreateNSString(); // expected-warning {{'__bridge_retained' casts have no effect when not using ARC}}
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CFTypeRef cf3 = (__bridge CFTypeRef)CreateSomething();
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CFStringRef cf4 = (__bridge CFStringRef)CreateNSString();
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}
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void fixits() {
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id obj1 = (id)CFCreateSomething();
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CFTypeRef cf1 = (CFTypeRef)CreateSomething();
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}
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#pragma clang diagnostic ignored "-Warc-bridge-casts-disallowed-in-nonarc"
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void to_cf_ignored(id obj) {
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CFTypeRef cf1 = (__bridge_retained CFTypeRef)CreateSomething(); // no-warning
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CFTypeRef cf3 = (__bridge CFTypeRef)CreateSomething(); // no-warning
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}
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// Check that clang doesn't warn about dropping const from Objective-C object
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// types.
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void test_wcast_qual() {
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CFStringRef c;
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NSString *n0 = (NSString *)c;
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NSString **n1 = (NSString **)&c;
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const NSString *n2;
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const NSString **n3;
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void *p0 = (void *)n2;
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void **p1 = (void **)n3;
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}
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