Subclassing off Array_c [Swarm 1.2, Solaris 2.6]

[Gary Polhill]

I get a seg fault when subclassing off Array_c. Can anyone
tell me what I might have done wrong?

Here's the simplest code required to reproduce the problem:


::::::::::::::
test-ArraySub-main.m
::::::::::::::
#import <simtools.h>
#import <collections.h>
#import "test-ArraySub.h"

int main(int argc, const char **argv) {
  id a;
  initSwarm(argc, argv);

  a = [ArraySub create: globalZone setCount: 1];
  return(0);
}
::::::::::::::
test-ArraySub.h
::::::::::::::
#import <defobj.h>
#import <collections.h>
#import <collections/Array.h>

@interface ArraySub: Array_c {
  int thingyBob;
}

//+create: (id)aZone setCount: (int)aCount;

@end
::::::::::::::
test-ArraySub.m
::::::::::::::
#import "test-ArraySub.h"

@implementation ArraySub
/*
+create: (id)aZone setCount: (int)aCount {
  ArraySub *newArraySub;

  newArraySub = [super create: aZone setCount: aCount];
  newArraySub->thingyBob = 42;
  return(newArraySub);
}
*/
@end
::::::::::::::
Makefile-test-ArraySub
::::::::::::::
ifeq ($(SWARMHOME),)
SWARMHOME=/home/swarm/swarm1.2/sunos5.5/swarm
endif
APPLICATION=test-ArraySub-main
OBJECTS=test-ArraySub.o test-ArraySub-main.o

include $(SWARMHOME)/Makefile.appl

test-ArraySub.o: test-ArraySub.m test-ArraySub.h
test-ArraySub-main.o: test-ArraySub.h test-ArraySub-main.m

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

Here's some gdb output

gdb test-ArraySub-main
GDB is free software and you are welcome to distribute copies of it
 under certain conditions; type "show copying" to see the conditions.
There is absolutely no warranty for GDB; type "show warranty" for details.
GDB 4.16 (sparc-sun-solaris2.5), Copyright 1996 Free Software Foundation, Inc...

(gdb) run
Starting program: /home/gp/swarm/fearlus/model0-2/test-ArraySub-main
Program received signal SIGSEGV, Segmentation fault.
-[Zone(c) _allocIVars:] (self=0xa2400, _cmd=0x9e630, aClass=0x0) at Zone.m:24
24 {
(gdb) bt
#0  -[Zone(c) _allocIVars:] (self=0xa2400, _cmd=0x9e630, aClass=0x0) at
Zone.m:24
#1  0x3d618 in +[Array(c) _create:setCount:] (self=0x92db8, _cmd=0x92e10,
aZone=0xc0f68, memberCount=1) at Array.m:63
#2  0x1b424 in main (argc=1, argv=0xefffe18c) at test-ArraySub-main.m:9

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

Here's what I get if I uncomment the commented code (looks like it's
essentially the same problem):

(gdb) run
Starting program: /home/gp/swarm/fearlus/model0-2/test-ArraySub-main
Program received signal SIGSEGV, Segmentation fault.
-[Zone(c) _allocIVars:] (self=0xa5800, _cmd=0x9e6cc, aClass=0x0) at Zone.m:24
24 {
(gdb) bt
#0  -[Zone(c) _allocIVars:] (self=0xa5800, _cmd=0x9e6cc, aClass=0x0) at
Zone.m:24
#1  0x3d668 in +[Array(c) _create:setCount:] (self=0x92e4c, _cmd=0x92e7c,
aZone=0xc1000, memberCount=1) at Array.m:63
#2  0x1b400 in +[ArraySub create:setCount:] (self=0x92e4c, _cmd=0x92eac,
aZone=0xc1000, aCount=1) at test-ArraySub.m:8
#3  0x1b474 in main (argc=1, argv=0xefffe18c) at test-ArraySub-main.m:9


--

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