[Bug objc/11661] New: [objc-improvements-branch] function pointers as ivars

["d dot ayers at inode dot at" <gcc-bugzilla at gcc dot gnu dot org>]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11661

           Summary: [objc-improvements-branch] function pointers as ivars
           Product: gcc
           Version: 3.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: objc
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: d dot ayers at inode dot at
                CC: gcc-bugs at gcc dot gnu dot org,zlaski at apple dot com
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu

Declaring function pointers as instance variables causes an ICE (independent of
the runtime).

The example (I'll try to attach it as a file...):
#include <objc/Object.h>

@interface MyObject : Object
{
  BOOL (*ivar)(id, SEL, id);
}
@end
@implementation MyObject
@end

int main ()
{
  return(0);
}

compiled with:
gccObjCI -fnext-runtime -lobjc fncptrivar.m
will fail, (independent of -fgnu-runtime or -fnext-runtime).  The compiler reports:
fncptrivar.m:5: internal compiler error: tree check: expected identifier_node,
have indirect_ref in add_instance_variable, at objc/objc-act.c:6601

Reading specs from /usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.4/specs
Konfiguriert mit: ../gcc/configure --enable-shared --enable-threads=posix
--enable-languages=objc --enable-version-specific-runtime-libs
--program-suffix=ObjCI
Thread model: posix
gcc-Version 3.4 20030722 (experimental)