http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49301
Summary: Forward declaration of classes broken
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: critical
Priority: P3
Component: objc
AssignedTo: [email protected]
ReportedBy: [email protected]
In the current gcc from SVN is the meaning of @class broken.
@class is used to tell the compiler the class exists, but that its not (yet)
available. Eg: class B uses class A, but class A uses class B too, creating a
recursive import, and thus goes wrong.
Using @class now broke. This is the warning the compiler gives, for example:
OFConnectionFailedException.m: In function â-[OFConnectionFailedException
dealloc]â:
OFConnectionFailedException.m:68:2: warning: @interface of class âOFTCPSocketâ
not found [enabled by default]
It seems like @class is expecting the @interface to follow in the same file...
Please recover the function of @class as it is an important functionality.
Example.m:
[code]
#import <objc/objc.h>
#import <objc/Object.h>
@class myClass;
int main()
{
myClass *obj = [myClass new];
}
@interface myClass : Object
@end
@implementation myClass
@end
[/code]
$ gcc -lobjc Example.m
Example.m: In function âmainâ:
Example.m:8:2: warning: @interface of class âmyClassâ not found [enabled by
default]
