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

/* { dg-do compile } */

/* { dg-options "-Wall" } */

/* Test warnings with the dot-syntax.  */

#include 

#include 

#include 

@interface MyRootClass

{

  Class isa;

  id a;

  id b;

  int p1;

  int p2;

}

+ (id) initialize;

+ (id) alloc;

- (id) init;

@property int p1;

@property int p2;

@end

@implementation MyRootClass

+ (id) initialize { return self; }

+ (id) alloc { return class_createInstance (self, 0); }

- (id) init { return self; }

@synthesize p1;

@synthesize p2;

@end

int main (void)

{

  MyRootClass *object = [[MyRootClass alloc] init];

  /* First, test that the artificial code generated by dot-syntax does

     not generate unexpected warnings.  */

  /* All of the following should generate no warnings.  */

  object.p1 = 0;

  object.p2 = 0;

  object.p1 = object.p2 = 0;

  if (object.p1 > 0)

    object.p2 = 0;

  object.p1++;

  ++object.p1;

  object.p1--;

  --object.p1;

  while (object.p1)

    object.p1--;

  /* Now test some warnings.  */

  object.p1; /* This warning does not seem to be produced in C++.  dg-warning "value computed is not used" */

  /* TODO: It would be good to get the following to warn.  */

  if (object.p1 = 0) /* dg-warning "suggest parentheses around assignment used as truth value" */

    abort ();

  return 0;

}