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/* Testing conditional warnings (without headers).  */

/* Author: David Ayers */

/* { dg-do compile } */

#define nil ((id)0)

@interface MyObject

@end

@protocol MyProtocol

@end

@interface MyProtoObject <MyProtocol>

@end

int

main (int argc, char *argv[])

{

  id var_id = nil;

  id <MyProtocol> var_id_p = nil;

  MyObject *var_obj = nil;

  MyProtoObject *var_obj_p = nil;

  var_id = (var_id == var_obj) ? var_id : var_obj;

  var_id = (var_id == var_obj) ? var_id : var_obj_p;

  /* Ayers: Currently, the following test case passes for

     technically the wrong reason (see below).

  */

  var_obj_p = (var_id == var_obj) ? var_obj_p : var_obj; /* { dg-warning "distinct Objective-C types" } */

  var_obj_p = (var_id == var_obj) ? var_obj_p : var_id_p;

  /* Ayers: The first of the following test cases

     should probably warn for var_obj_p = var_obj,

     yet that would require extensive changes to

     build_conditional_expr to create a tree with

     multiple types that the assignment would have

     to evaluate both versions for correct diagnostics.

  */

  var_obj_p = (var_id == var_obj) ? var_id : var_obj;

  var_obj_p = (var_id == var_obj) ? var_id : var_obj_p;

  return 0;

}