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/* Contributed by Nicola Pero , December 2010.  */

/* { dg-do compile } */

#include 

/* Test that you can not declare two methods, in the same protocol,

   with the same name and method signature, but one as @required and

   once as @optional.  */

/* First, @required conflicting with @optional.  */

@protocol MyProtocol

@optional

+ (void) method1: (id)x; /* { dg-message "previous declaration" } */

- (id) method2: (long)x; /* { dg-message "previous declaration" } */

@required

+ (void) method1: (id)x; /* { dg-error "declared .@optional. and .@required. at the same time" } */

- (id) method2: (long)x; /* { dg-error "declared .@optional. and .@required. at the same time" } */

@end

/* Second, @optional conflicting with @required.  */

@protocol MyProtocol2

@required

+ (void) method3: (Class)x; /* { dg-message "previous declaration" } */

- (id *) method4: (long)x;  /* { dg-message "previous declaration" } */

@optional

+ (void) method3: (Class)x; /* { dg-error "declared .@optional. and .@required. at the same time" } */

- (id *) method4: (long)x;  /* { dg-error "declared .@optional. and .@required. at the same time" } */

@end