New subject: [MacRuby] #1225: Segfault occurs when override the @sock.shutdown in NET::IMAP.

15 Apr 2011


      #1225: Segfault occurs when override the @sock.shutdown in NET::IMAP.
----------------------------------+-----------------------------------------
 Reporter:  watson1978@…          |       Owner:  lsansonetti@…        
     Type:  defect                |      Status:  new                  
 Priority:  minor                 |   Milestone:                       
Component:  MacRuby               |    Keywords:                       
----------------------------------+-----------------------------------------
 Test Script:
 {{{
 #!ruby
 require "net/imap"

 SERVER_ADDR = "127.0.0.1"
 server = TCPServer.new(SERVER_ADDR, 0)
 port = server.addr[1]
 Thread.start do
   ssock = server.accept

   ssock.print("* OK test server\r\n")
 end

 imap = Net::IMAP.new(SERVER_ADDR, port)
 imap.instance_eval do
   puts "** override shutdown"
   def @sock.shutdown(*how)
   end
 end

 puts "** done"
 }}}

 {{{
 $ ruby19 t.rb
 ** override shutdown
 ** done

 $ macruby t.rb
 ** override shutdown
 zsh: segmentation fault  macruby t.rb
 }}}

 BackTrace:
 {{{
 Program received signal EXC_BAD_ACCESS, Could not access memory.
 Reason: KERN_INVALID_ADDRESS at address: 0x0000000000000018
 [Switching to process 1051 thread 0x2b0b]
 0x0000000100892790 in llvm::Calculate<llvm::Function, llvm::BasicBlock*>
 ()
 (gdb) bt
 #0  0x0000000100892790 in llvm::Calculate<llvm::Function,
 llvm::BasicBlock*> ()
 #1  0x0000000100894201 in
 llvm::DominatorTreeBase<llvm::BasicBlock>::recalculate<llvm::Function> ()
 #2  0x000000010088f08d in llvm::DominatorTree::runOnFunction ()
 #3  0x0000000100901aa0 in llvm::FPPassManager::runOnFunction ()
 #4  0x0000000100901c3c in llvm::FunctionPassManagerImpl::run ()
 #5  0x0000000100901f29 in llvm::FunctionPassManager::run ()
 #6  0x000000010013f89d in RoxorCore::optimize (this=0x102068200,
 func=0x10151f540) at vm.cpp:543
 #7  0x000000010013f916 in RoxorCore::compile (this=0x102068200,
 func=0x10151f540, run_optimize=true) at vm.cpp:577
 #8  0x0000000100143268 in RoxorCore::resolve_method (this=0x102068200,
 klass=0x200220bc0, sel=0x101503310, func=0x10151f540, arity=@0x10490ee48,
 flags=2, imp=0, m=0x0, objc_imp_types=0x0) at vm.cpp:1867
 #9  0x000000010014366d in RoxorCore::resolve_methods (this=0x102068200,
 map=0x1011bc210, klass=0x200220bc0, sel=0x101503310) at vm.cpp:1946
 #10 0x000000010014484f in rb_vm_resolve_method (klass=0x200220bc0,
 sel=0x101503310) at vm.cpp:2006
 #11 0x00000001001448ad in resolveInstanceMethod_imp (self=0x2000f50a0,
 sel=0x7fff819d0585, name=0x101503310) at vm.cpp:4920
 #12 0x00007fff86969937 in _class_resolveMethod ()
 #13 0x000000010012b02e in rb_vm_dispatch () at dispatcher.cpp:635
 #14 0x0000000101600d74 in ?? ()
 #15 0x00000001016033a2 in ?? ()
 #16 0x000000010012c444 in __rb_vm_rcall [inlined] () at /Users/watson/src
 /macruby-trunk/dispatcher.cpp:159
 #17 0x000000010012c444 in ruby_dispatch [inlined] () at /Users/watson/src
 /macruby-trunk/dispatcher.cpp:466
 #18 0x000000010012c444 in rb_vm_dispatch () at dispatcher.cpp:863
 #19 0x0000000101600d74 in ?? ()
 #20 0x0000000101602aa0 in ?? ()
 #21 0x000000010012c444 in __rb_vm_rcall [inlined] () at /Users/watson/src
 /macruby-trunk/dispatcher.cpp:159
 #22 0x000000010012c444 in ruby_dispatch [inlined] () at /Users/watson/src
 /macruby-trunk/dispatcher.cpp:466
 #23 0x000000010012c444 in rb_vm_dispatch () at dispatcher.cpp:863
 #24 0x000000010129ba55 in md5 ()
 #25 0x00000001012adca6 in MREP_97B206DE041042B78F82683BD0596131 ()
 #26 0x000000010012c444 in __rb_vm_rcall [inlined] () at /Users/watson/src
 /macruby-trunk/dispatcher.cpp:159
 #27 0x000000010012c444 in ruby_dispatch [inlined] () at /Users/watson/src
 /macruby-trunk/dispatcher.cpp:466
 #28 0x000000010012c444 in rb_vm_dispatch () at dispatcher.cpp:863
 #29 0x000000010129ba55 in md5 ()
 #30 0x00000001012ad90c in MREP_97B206DE041042B78F82683BD0596131 ()
 #31 0x00000001001307f3 in __rb_vm_bcall [inlined] () at /Users/watson/src
 /macruby-trunk/dispatcher.cpp:98
 #32 0x00000001001307f3 in vm_block_eval [inlined] () at /Users/watson/src
 /macruby-trunk/dispatcher.cpp:1212
 #33 0x00000001001307f3 in rb_vm_block_eval (b=0x20020d600, argc=0,
 argv=0x0) at dispatcher.cpp:1219
 #34 0x0000000100149985 in rb_vm_thread_run (thread=8590747520) at
 vm.cpp:4577
 #35 0x00007fff85d534f6 in _pthread_start ()
 #36 0x00007fff85d533a9 in thread_start ()
 }}}

-- 
Ticket URL: <http://www.macruby.org/trac/ticket/1225>
MacRuby <http://macruby.org/>

[MacRuby] #1225: Segfault occurs when override the @sock.shutdown in NET::IMAP.

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