Automatic Reference Counting.
Language-design credit goes to a lot of people, but I particularly want
to single out Blaine Garst and Patrick Beard for their contributions.
Compiler implementation credit goes to Argyrios, Doug, Fariborz, and myself,
in no particular order.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133103 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/SemaObjC/arc-bridged-cast.m b/test/SemaObjC/arc-bridged-cast.m
new file mode 100644
index 0000000..227cce2
--- /dev/null
+++ b/test/SemaObjC/arc-bridged-cast.m
@@ -0,0 +1,40 @@
+// RUN: %clang_cc1 -triple x86_64-apple-darwin11 -fobjc-nonfragile-abi -fsyntax-only -fobjc-arc -fblocks -verify %s
+// RUN: %clang_cc1 -triple x86_64-apple-darwin11 -fobjc-nonfragile-abi -fsyntax-only -fblocks %s
+
+typedef const void *CFTypeRef;
+typedef const struct __CFString *CFStringRef;
+
+@interface NSString
+@end
+
+CFTypeRef CFCreateSomething();
+CFStringRef CFCreateString();
+CFTypeRef CFGetSomething();
+CFStringRef CFGetString();
+
+id CreateSomething();
+NSString *CreateNSString();
+
+void from_cf() {
+ id obj1 = (__bridge_transfer id)CFCreateSomething();
+ id obj2 = (__bridge_transfer NSString*)CFCreateString();
+ (__bridge int*)CFCreateSomething(); // expected-error{{incompatible types casting 'CFTypeRef' (aka 'const void *') to 'int *' with a __bridge cast}}
+ id obj3 = (__bridge id)CFGetSomething();
+ id obj4 = (__bridge NSString*)CFGetString();
+}
+
+void to_cf(id obj) {
+ CFTypeRef cf1 = (__bridge_retained CFTypeRef)CreateSomething();
+ CFStringRef cf2 = (__bridge_retained CFStringRef)CreateNSString();
+ CFTypeRef cf3 = (__bridge CFTypeRef)CreateSomething();
+ CFStringRef cf4 = (__bridge CFStringRef)CreateNSString();
+}
+
+void fixits() {
+ id obj1 = (id)CFCreateSomething(); // expected-error{{cast of C pointer type 'CFTypeRef' (aka 'const void *') to Objective-C pointer type 'id' requires a bridged cast}} \
+ // expected-note{{use __bridge to convert directly (no change in ownership)}} \
+ // expected-note{{use __bridge_transfer to transfer ownership of a +1 'CFTypeRef' (aka 'const void *') into ARC}}
+ CFTypeRef cf1 = (CFTypeRef)CreateSomething(); // expected-error{{cast of Objective-C pointer type 'id' to C pointer type 'CFTypeRef' (aka 'const void *') requires a bridged cast}} \
+ // expected-note{{use __bridge to convert directly (no change in ownership)}} \
+ // expected-note{{use __bridge_retained to make an ARC object available as a +1 'CFTypeRef' (aka 'const void *')}}
+}