llvm-project/clang/test/SemaObjC/enhanced-proto-2.m

// RUN: %clang_cc1 -verify -Wno-objc-root-class %s
// expected-no-diagnostics

@protocol MyProto1 
@optional
- (void) FOO;
@optional
- (void) FOO1;
@optional 
- (void) REQ;
@optional
@end

@interface  MyProto2 <MyProto1>
- (void) FOO2;
- (void) FOO3;
@end

@implementation MyProto2
- (void) FOO2{}
- (void) FOO3{}
@end
Added a new attribute, objc_root_class, which informs the compiler when a root class is intentionally declared. The warning this inhibits, -Wobjc-root-class, is opt-in for now. However, all clang unit tests that would trigger the warning have been updated to use -Wno-objc-root-class. <rdar://problem/7446698> llvm-svn: 154187 2012-04-07 02:12:22 +08:00			`// RUN: %clang_cc1 -verify -Wno-objc-root-class %s`
Prior to adding the new "expected-no-diagnostics" directive to VerifyDiagnosticConsumer, make the necessary adjustment to 580 test-cases which will henceforth require this new directive. llvm-svn: 166280 2012-10-19 20:44:48 +08:00			`// expected-no-diagnostics`
For @optional unimplemented methods do not issue the warning. llvm-svn: 44872 2007-12-12 03:10:26 +08:00
			`@protocol MyProto1`
			`@optional`
			`- (void) FOO;`
			`@optional`
objc: diagnose duplicate declaration of methods in classes. // rdar://10535349 llvm-svn: 146504 2011-12-14 03:40:34 +08:00			`- (void) FOO1;`
For @optional unimplemented methods do not issue the warning. llvm-svn: 44872 2007-12-12 03:10:26 +08:00			`@optional`
			`- (void) REQ;`
			`@optional`
			`@end`

			`@interface MyProto2 <MyProto1>`
			`- (void) FOO2;`
			`- (void) FOO3;`
			`@end`

			`@implementation MyProto2`
			`- (void) FOO2{}`
			`- (void) FOO3{}`
			`@end`