gcc/testsuite/obj-c++.dg/method-15.mm

   1 /* Check if finding multiple signatures for a method is handled gracefully when method lookup succeeds (see also method-7.m).  */
   2 /* Contributed by Ziemowit Laski <zlaski@apple.com>  */
   3 /* { dg-options "-Wstrict-selector-match" } */
   4 /* { dg-do compile } */
   5
   6 #include "../objc-obj-c++-shared/TestsuiteObject.h"
   7
   8 @protocol MyObject
   9 - (id)initWithData:(TestsuiteObject *)data; /* { dg-line MyObject_initWithData } */
  10 @end
  11
  12 @protocol SomeOther
  13 - (id)initWithData:(int)data; /* { dg-line SomeOther_initWithData } */
  14 @end
  15
  16 @protocol MyCoding
  17 - (id)initWithData:(id<MyObject, MyCoding>)data; /* { dg-line MyCoding_initWithData } */
  18 @end
  19
  20 @interface NTGridDataObject: TestsuiteObject <MyCoding>
  21 {
  22     TestsuiteObject<MyCoding> *_data;
  23 }
  24 + (NTGridDataObject*)dataObject:(id<MyObject, MyCoding>)data;
  25 @end
  26
  27 @implementation NTGridDataObject
  28 - (id)initWithData:(id<MyObject, MyCoding>)data {
  29   return data;
  30 }
  31 + (NTGridDataObject*)dataObject:(id<MyObject, MyCoding>)data
  32 {
  33     NTGridDataObject *result = [[NTGridDataObject alloc] initWithData:data]; /* { dg-line result_init } */
  34      /* { dg-warning "multiple methods named .\\-initWithData:. found" "" { target *-*-* } .-1 } */
  35      /* { dg-message "using .\\-\\(id\\)initWithData:\\(TestsuiteObject \\*\\)data." "" { target *-*-* } MyObject_initWithData } */
  36      /* { dg-message "also found .\\-\\(id\\)initWithData:\\(id <MyObject, MyCoding>\\)data." "" { target *-*-* } MyCoding_initWithData } */
  37      /* { dg-message "also found .\\-\\(id\\)initWithData:\\(int\\)data." "" { target *-*-* } SomeOther_initWithData } */
  38
  39      /* The following warning is a consequence of picking the "wrong" method signature.  */
  40      /* { dg-warning "passing argument 1 of .initWithData:. from distinct Objective\\-C type" "" { target *-*-* } result_init } */
  41     return result;
  42 }
  43 @end