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Opened by Peter Bortas@zinoOwner

Compat resolver related crash.

Imported from http://bugzilla.roxen.com/bugzilla/show_bug.cgi?id=7363

Reported by Martin Nilsson nilsson@opera.com

Create a file with

#pike 8.1
inherit Crypto.BlockCipher;
class _Buffer {
  inherit ::this_program;
}

as lib/8.0/modules/Crypto.pmod/CompatProxy.pmod and run hilfe, you'll get the following crash.

Pike v8.1 release 0 running Hilfe v3.5 (Incremental Pike Frontend)
(running in Pike 8.0 compat mode)
> Crypto.CompatProxy;

Program received signal SIGSEGV, Segmentation fault.
low_clone (p=0xd46288) at /home/nilsson/pike/src/object.c:167
167         LOW_PARENT_INFO(o,p)->parent=0;
(gdb) bt
#0  low_clone (p=0xd46288) at /home/nilsson/pike/src/object.c:167
#1  0x00000000004bc16d in parent_clone_object (p=0xd46288, 
    parent=parent@entry=0x8be8f0, 
    parent_identifier=parent_identifier@entry=19, args=args@entry=0)
    at /home/nilsson/pike/src/object.c:395
#2  0x000000000042b0f4 in lower_mega_apply (args=0, o=0x8be8f0, fun=19)
    at /home/nilsson/pike/src/interpret.c:2196
#3  0x000000000042d674 in mega_apply_low (args=<optimized out>, 
    arg1=<optimized out>, arg2=<optimized out>)
    at /home/nilsson/pike/src/interpret.c:2715
#4  0x00002aaaad13e241 in init_Nettle_BufferedCipher_struct ()
    at /home/nilsson/pike/src/post_modules/Nettle/cipher.cmod:1036
#5  Nettle_BufferedCipher_event_handler (ev=0)
    at /home/nilsson/pike/src/post_modules/Nettle/cipher.cmod:1048
#6  0x00000000004bb9d5 in call_c_initializers (o=0x8be8f0)
    at /home/nilsson/pike/src/object.c:278
#7  0x00000000004e99dd in run_pass1 (c=0xae2970)
    at /home/nilsson/pike/src/program.c:9143
#8  f_compilation_compile (args=<optimized out>)
    at /home/nilsson/pike/src/program.c:9669