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