Re: bug with objc runtime (on Windows): Solved!!

[Lloyd Dupont]

One thing which worr me slightly is:

if I replace class_get_super_class(c) by [c superclass]

I have a compiler warning:

objcsharp.m: In function `objcsharp_get_super_class':
objcsharp.m:11: warning: cannot find method
objcsharp.m:11: warning: return type for `superclass' defaults to id

it works but it seems unsafe/unsure/unmaintain/breakable!

any idea of the proper code?

----- Original Message -----

From: Lloyd Dupont

To: Lloyd Dupont ; GNUstep Discussion

Sent: Thursday, May 19, 2005 11:02 AM

Subject: Re: bug with objc runtime (on Windows): Solved!!

It's a class initialization problem!

if I use [c1 superclass] instead of class_get_super_class(c1) it works!

now, that's annoying because [c1 superclass] is an undocumented call I'm not sure it would be always there....

any C runtime function work around?

----- Original Message -----

From: Lloyd Dupont

To: GNUstep Discussion

Sent: Thursday, May 19, 2005 10:47 AM

Subject: bug with objc runtime (on Windows)

I have a very simple ObjectiveC only program which reproduce my problem, a memory access violation after a simple lookup.

Any idea what it could be?

 

the file are attached but I copy for you the code inline.

It has this memory access violation problem while trying to display the name of the super class....

-------------------------------------------------------------------------------

#include <objc/objc-api.h>
#include <Foundation/Foundation.h>
#include <stdio.h>
#include <stdlib.h>
#include <windows.h>

 

#define DEBUG2(x, fmt) printf("(%s:%d):%s :%s = %" #fmt "\n", __FILE__, __LINE__, __FUNCTION__, #x, x)

 

main()
{
 LoadLibrary("Kernel32");
 LoadLibrary("gnustep-base");
 
 Class c1 = objc_get_class("NSAutoreleasePool");
 DEBUG2(c1, p);
 const char * n1 = class_get_class_name(c1);
 DEBUG2(n1, s);
 
 Class c2 = class_get_super_class(c1);
 DEBUG2(c2, p);
 const char * n2 = class_get_class_name(c2);
 DEBUG2(n2, s);
 
 return 0;
}