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/* Check if array arguments of ObjC methods are decayed to pointer types

   in a proper fashion:

     (1) The _encodings_ for the array arguments should remain to be '[4i]' and

         such, since this has been the case since at least gcc 3.3.

     (2) However, when building the static C functions out of ObjC method signatures,

         we need to decay the arrays into pointers (as C does).

     (3) If array size is not known (e.g., 'int a[]'), then the type shall be

         encoded as a pointer.  */

/* Contributed by Alexander Malmberg <alexander@malmberg.org>  */

#include <objc/Object.h>

#include <stdlib.h>

#include <stdio.h>

#define CHECK_IF(expr) if(!(expr)) abort()

#ifdef __NEXT_RUNTIME__

#define METHOD Method

#define OBJC_GETCLASS objc_getClass

#define CLASS_GETINSTANCEMETHOD class_getInstanceMethod

#else

#include <objc/objc-api.h>

#define METHOD Method_t

#define OBJC_GETCLASS objc_get_class

#define CLASS_GETINSTANCEMETHOD class_get_instance_method

#endif

@interface Test : Object

{ float j; }

-(void) test2: (int [5])a with: (int [])b;

-(id) test3: (Test **)b; /* { dg-warning "previous declaration of .\\-\\(id\\)test3:\\(Test \\*\\*\\)b." } */

@end

@implementation Test

-(void) test2: (int [5])a with: (int [])b

{

  a[3] = *b;

}

-(void) test3: (Test [3][4])b {  /* { dg-warning "conflicting types for .\\-\\(void\\)test3:\\(Test \\\[3\\\]\\\[4\\\]\\)b." } */

}

@end

int bb[6] = { 0, 1, 2, 3, 4, 5 };

int *b = bb;

Test *cc[4];

Test **c = cc;

int offs1, offs2, offs3, offs4, offs5, offs6;

int main(int argc, char **argv)

{

  Class testClass = OBJC_GETCLASS("Test");

  METHOD meth;

  cc[0] = [Test new];

  CHECK_IF (bb[3] == 3);

  [*c test2: b with: bb + 4];

  CHECK_IF (bb[3] == 4);

  bb[3] = 0;

  [*c test2: bb with: bb + 5];

  CHECK_IF (bb[3] == 5);

  meth = CLASS_GETINSTANCEMETHOD(testClass, @selector(test2:with:));

  offs1 = offs2 = offs3 = offs4 = offs5 = offs6 = -1;

  sscanf(meth->method_types, "v%d@%d:%d[%di]%d^i%d", &offs1, &offs2, &offs3,

      &offs4, &offs5, &offs6);

  CHECK_IF (!offs2 && offs4 == 5 && offs3 > 0);

  CHECK_IF (offs5 == 2 * offs3 && offs6 == 3 * offs3 && offs1 == 4 * offs3);

  meth = CLASS_GETINSTANCEMETHOD(testClass, @selector(test3:));

  offs1 = offs2 = offs3 = offs4 = offs5 = offs6 = -1;

  sscanf(meth->method_types, "v%d@%d:%d[%d[%d{Test=#f}]]%d", &offs1, &offs2, &offs3,

      &offs4, &offs5, &offs6);

  CHECK_IF (!offs2 && offs4 == 3 && offs5 == 4 && offs3 > 0);

  CHECK_IF (offs6 == 2 * offs3 && offs1 == 3 * offs3);

  return 0;

}