| 1 | // RUN: %clang_cc1 -triple x86_64-apple-darwin11 -fsyntax-only -fblocks -Wcast-qual -verify %s |
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| 2 | // rdar://10597832 |
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| 3 | |
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| 4 | typedef const void *CFTypeRef; |
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| 5 | typedef const struct __CFString *CFStringRef; |
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| 6 | @class NSString; |
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| 7 | |
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| 8 | @interface NSString |
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| 9 | @end |
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| 10 | |
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| 11 | CFTypeRef CFCreateSomething(); |
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| 12 | CFStringRef CFCreateString(); |
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| 13 | CFTypeRef CFGetSomething(); |
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| 14 | CFStringRef CFGetString(); |
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| 15 | |
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| 16 | id CreateSomething(); |
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| 17 | NSString *CreateNSString(); |
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| 18 | |
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| 19 | void from_cf() { |
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| 20 | id obj1 = (__bridge_transfer id)CFCreateSomething(); // expected-warning {{'__bridge_transfer' casts have no effect when not using ARC}} |
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| 21 | id obj2 = (__bridge_transfer NSString*)CFCreateString(); // expected-warning {{'__bridge_transfer' casts have no effect when not using ARC}} |
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| 22 | (__bridge int*)CFCreateSomething(); // expected-warning {{expression result unused}} expected-warning {{cast from 'const void *' to 'int *' drops const qualifier}} |
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| 23 | id obj3 = (__bridge id)CFGetSomething(); |
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| 24 | id obj4 = (__bridge NSString*)CFGetString(); |
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| 25 | } |
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| 26 | |
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| 27 | void to_cf(id obj) { |
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| 28 | CFTypeRef cf1 = (__bridge_retained CFTypeRef)CreateSomething(); // expected-warning {{'__bridge_retained' casts have no effect when not using ARC}} |
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| 29 | CFStringRef cf2 = (__bridge_retained CFStringRef)CreateNSString(); // expected-warning {{'__bridge_retained' casts have no effect when not using ARC}} |
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| 30 | CFTypeRef cf3 = (__bridge CFTypeRef)CreateSomething(); |
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| 31 | CFStringRef cf4 = (__bridge CFStringRef)CreateNSString(); |
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| 32 | } |
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| 33 | |
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| 34 | void fixits() { |
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| 35 | id obj1 = (id)CFCreateSomething(); |
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| 36 | CFTypeRef cf1 = (CFTypeRef)CreateSomething(); |
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| 37 | } |
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| 38 | |
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| 39 | #pragma clang diagnostic ignored "-Warc-bridge-casts-disallowed-in-nonarc" |
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| 40 | |
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| 41 | void to_cf_ignored(id obj) { |
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| 42 | CFTypeRef cf1 = (__bridge_retained CFTypeRef)CreateSomething(); // no-warning |
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| 43 | CFTypeRef cf3 = (__bridge CFTypeRef)CreateSomething(); // no-warning |
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| 44 | } |
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| 45 | |
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| 46 | // Check that clang doesn't warn about dropping const from Objective-C object |
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| 47 | // types. |
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| 48 | void test_wcast_qual() { |
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| 49 | CFStringRef c; |
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| 50 | NSString *n0 = (NSString *)c; |
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| 51 | NSString **n1 = (NSString **)&c; |
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| 52 | const NSString *n2; |
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| 53 | const NSString **n3; |
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| 54 | void *p0 = (void *)n2; |
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| 55 | void **p1 = (void **)n3; |
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| 56 | } |
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| 57 | |
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