1/* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, December 2010.  */
2/* { dg-do compile } */
3
4#include <objc/objc.h>
5
6/* Test that you can not declare two methods, in the same protocol,
7   with the same name but conflicting method signatures.  */
8
9@protocol MyProtocol
10+ (int) method1: (int)x;   /* { dg-message "previous declaration" } */
11+ (float) method1: (int)x; /* { dg-error "duplicate declaration of method .\\+method1." } */
12
13- (int) method2: (int)x;   /* { dg-message "previous declaration" } */
14- (int) method2: (float)x; /* { dg-error "duplicate declaration of method .\\-method2." } */
15
16@optional
17+ (int *) method3: (int)x;    /* { dg-message "previous declaration" } */
18+ (int *) method3: (int **)x; /* { dg-error "duplicate declaration of method .\\+method3." } */
19
20- (id) method4: (id)x;   /* { dg-message "previous declaration" } */
21- (void) method4: (id)x; /* { dg-error "duplicate declaration of method .\\-method4." } */
22@end
23
24/* We don't test conflicting types between @required and @optional
25   methods, as that is tested in method-conflict-2.  */
26
27