[ruby-dev:47626] [ruby-trunk - Bug #6400] dl/callback with fiddle occurs SEGV on NetBSD amd64

Issue #6400 has been updated by zzak (Zachary Scott).


Is this related to #6592?
----------------------------------------
Bug #6400: dl/callback with fiddle occurs SEGV on NetBSD amd64
https://bugs.ruby-lang.org/issues/6400#change-41158

Author: naruse (Yui NARUSE)
Status: Assigned
Priority: Normal
Assignee: tenderlovemaking (Aaron Patterson)
Category: 
Target version: 
ruby -v: ruby 2.0.0dev (2012-04-30 trunk 35500) [x86_64-netbsd6.99.5]
Backport: 


On NetBSD amd64, libffi with callback occurs SEGV as following.

kelvena%  cat p
require 'dl/callback'
require 'dl/func'
include DL
Called_with = nil
addr = set_callback(TYPE_VOID, 1) do |str|
  called_with = dlunwrap(str)
end
func = CFunc.new(addr, TYPE_VOID, 'test')
f = Function.new(func, [TYPE_VOIDP])
arg = 'foo'
f.call(dlwrap(arg))
kelvena% ./ruby p
/home/naruse/local/ruby/lib/ruby/2.0.0/dl/func.rb:55: [BUG] Segmentation fault
ruby 2.0.0dev (2012-04-30 trunk 35500) [x86_64-netbsd6.99.5]

-- Control frame information -----------------------------------------------
c:0005 p:---- s:0022 b:0022 l:000021 d:000021 CFUNC  :call
c:0004 p:0059 s:0018 b:0018 l:000017 d:000017 METHOD /home/naruse/local/ruby/lib/ruby/2.0.0/dl/func.
rb:55
c:0003 p:0157 s:0010 b:0010 l:001db8 d:0021a8 EVAL   p:11
c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH
c:0001 p:0000 s:0002 b:0002 l:001db8 d:001db8 TOP

-- Ruby level backtrace information ----------------------------------------
p:11:in `<main>'
/home/naruse/local/ruby/lib/ruby/2.0.0/dl/func.rb:55:in `call'
/home/naruse/local/ruby/lib/ruby/2.0.0/dl/func.rb:55:in `call'

-- Other runtime information -----------------------------------------------

* Loaded script: p

* Loaded features:

    0 enumerator.so
    1 /home/naruse/local/ruby/lib/ruby/2.0.0/x86_64-netbsd6.99.5/enc/encdb.so
    2 /home/naruse/local/ruby/lib/ruby/2.0.0/x86_64-netbsd6.99.5/enc/trans/transdb.so
    3 /home/naruse/local/ruby/lib/ruby/2.0.0/rubygems/defaults.rb
    4 /home/naruse/local/ruby/lib/ruby/2.0.0/x86_64-netbsd6.99.5/rbconfig.rb
    5 /home/naruse/local/ruby/lib/ruby/2.0.0/rubygems/deprecate.rb
    6 /home/naruse/local/ruby/lib/ruby/2.0.0/rubygems/exceptions.rb
    7 /home/naruse/local/ruby/lib/ruby/2.0.0/rubygems/custom_require.rb
    8 /home/naruse/local/ruby/lib/ruby/2.0.0/rubygems.rb
    9 /home/naruse/local/ruby/lib/ruby/2.0.0/x86_64-netbsd6.99.5/dl.so
   10 /home/naruse/local/ruby/lib/ruby/2.0.0/x86_64-netbsd6.99.5/fiddle.so
   11 /home/naruse/local/ruby/lib/ruby/2.0.0/fiddle/function.rb
   12 /home/naruse/local/ruby/lib/ruby/2.0.0/fiddle/closure.rb
   13 /home/naruse/local/ruby/lib/ruby/2.0.0/fiddle.rb
   14 /home/naruse/local/ruby/lib/ruby/2.0.0/dl.rb
   15 /home/naruse/local/ruby/lib/ruby/2.0.0/thread.rb
   16 /home/naruse/local/ruby/lib/ruby/2.0.0/dl/callback.rb
   17 /home/naruse/local/ruby/lib/ruby/2.0.0/dl/stack.rb
   18 /home/naruse/local/ruby/lib/ruby/2.0.0/dl/value.rb
   19 /home/naruse/local/ruby/lib/ruby/2.0.0/dl/func.rb

[NOTE]
You may have encountered a bug in the Ruby interpreter or extension libraries.
Bug reports are welcome.
For details: http://www.ruby-lang.org/bugreport.html

zsh: abort (core dumped)  ./ruby p


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