[MacRuby] #1059: Segfault occurs when send #initialize_copy to already initialized class.

[MacRuby]

#1059: Segfault occurs when send #initialize_copy to already initialized class.
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 Reporter:  watson1978@…          |       Owner:  lsansonetti@…        
     Type:  defect                |      Status:  new                  
 Priority:  blocker               |   Milestone:                       
Component:  MacRuby               |    Keywords:                       
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 MacRuby should throw an exception, but Segfault occurs.

 Test Script:
 {{{
 #!ruby
 # it "raises a TypeError when called on already initialized classes"
 Object.send :initialize_copy, String
 }}}

 BackTrace:
 {{{
 $ DYLD_LIBRARY_PATH=. gdb --args ./macruby -I./lib ~/tmp/tt.rb

 Program received signal EXC_BAD_ACCESS, Could not access memory.
 Reason: KERN_INVALID_ADDRESS at address: 0x0000000000000020
 0x00007fff80016410 in class_setSuperclass ()
 (gdb) bt
 #0  0x00007fff80016410 in class_setSuperclass ()
 #1  0x0000000100028f20 in rb_mod_init_copy (clone=140735080617064,
 sel=0x0, orig=8590006368) at class.c:269
 #2  0x0000000100029059 in rb_class_init_copy (clone=140735080617064,
 sel=0x100e243b0, orig=8590006368) at class.c:310
 #3  0x00000001001381fa in __rb_vm_rcall [inlined] () at /Users/watson/src
 /macruby-trunk-svn/dispatcher.cpp:161
 #4  0x00000001001381fa in ruby_dispatch [inlined] () at /Users/watson/src
 /macruby-trunk-svn/dispatcher.cpp:466
 #5  0x00000001001381fa in rb_vm_dispatch () at dispatcher.cpp:849
 #6  0x0000000103300406 in ?? ()
 #7  0x00000001033000b7 in ?? ()
 #8  0x000000010015268d in rb_vm_run (fname=0x200051140
 "/Users/watson/tmp/tt.rb", node=0x20004eb40, binding=0x0,
 inside_eval=false) at vm.cpp:3943
 #9  0x0000000100038d71 in ruby_run_node (n=0x20004eb40) at eval.c:211
 #10 0x0000000100000c15 in main (argc=3, argv=0x100e1de30,
 envp=0x7fff5fbfee68) at main.cpp:40
 (gdb)
 }}}

-- 
Ticket URL: <http://www.macruby.org/trac/ticket/1059>
MacRuby <http://macruby.org/>