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