llvm-gcc-4.0/gcc/testsuite/obj-c++.dg/extern-c-1.mm

/* APPLE LOCAL file mainline */
/* Test extern c support inside @implementation */
/* Devang Patel  <dpatel@apple.com>.  */
#include <objc/objc.h>

@interface Extern 
@end

@implementation Extern

extern "C" void NSRegisterElement(id element);

- init {
    NSRegisterElement(self);
    return self;
}

@end