ObjectiveC ARC. Introduce a new attribute, 'objc_bridge'

that teaches the compiler about a subset of toll-free 
bridging semantics. This is wip. // rdar://15454846

llvm-svn: 194633

1 files changed, 29 insertions, 0 deletions

diff --git a/clang/test/SemaObjC/objcbridge-attribute.m b/clang/test/SemaObjC/objcbridge-attribute.m
new file mode 100644
index 00000000000..797f00be546
--- /dev/null
+++ b/clang/test/SemaObjC/objcbridge-attribute.m
@@ -0,0 +1,29 @@
+// RUN: %clang_cc1 -fsyntax-only -verify -Wno-objc-root-class %s
+// rdar://15454846
+
+typedef struct CGColor * __attribute__ ((objc_bridge(NSError))) CGColorRef;
+
+typedef struct CGColor * __attribute__((objc_bridge(12))) CFMyColorRef; // expected-error {{parameter of 'objc_bridge' attribute must be a single name of an Objective-C class}}
+
+typedef struct S1 *  __attribute__ ((objc_bridge)) CGColorRef1; // expected-error {{parameter of 'objc_bridge' attribute must be a single name of an Objective-C class}}
+
+typedef void *  __attribute__ ((objc_bridge(NSString))) CGColorRef2; 
+
+typedef void * CFTypeRef __attribute__ ((objc_bridge(NSError)));
+
+typedef struct CGColor * __attribute__((objc_bridge(NSString, NSError))) CGColorRefNoNSObject;// expected-error {{use of undeclared identifier 'NSError'}}
+
+typedef struct CGColor __attribute__((objc_bridge(NSError))) CGColorRefNoNSObject2; // expected-error {{'objc_bridge' attribute must be applied to a pointer type}}
+
+typedef struct __attribute__((objc_bridge(NSError))) CFColor * CFColorRefNoNSObject; // expected-error {{'objc_bridge' attribute must be put on a typedef only}}
+
+typedef struct __attribute__((objc_bridge(NSError))) CFColor * CFColorRefNoNSObject1;
+
+typedef union CFUColor * __attribute__((objc_bridge(NSError))) CFColorRefNoNSObject2; // expected-error {{'objc_bridge' attribute only applies to structs}}
+
+@interface I
+{
+   __attribute__((objc_bridge(NSError))) void * color; // expected-error {{'objc_bridge' attribute must be put on a typedef only}}
+
+}
+@end