[ruby-core:37695] [Backport92 - Backport #4945] Segfault on Fiber#resume on Mac OS X 10.6.8

Issue #4945 has been updated by Dan Weinand.


=begin
Here's another stacktrace from running outside irb.


 -e:1: [BUG] Bus Error
 ruby 1.9.2p180 (2011-02-18 revision 30909) [x86_64-darwin10.8.0]
 
 -- control frame ----------
 c:0004 p:---- s:0009 b:0009 l:000008 d:000008 CFUNC  :resume
 c:0003 p:0021 s:0006 b:0006 l:0014e8 d:002458 EVAL   -e:1
 c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH
 c:0001 p:0000 s:0002 b:0002 l:0014e8 d:0014e8 TOP   
 ---------------------------
 -- Ruby level backtrace information ----------------------------------------
 -e:1:in `<main>'
 -e:1:in `resume'
 
 -- C level backtrace information -------------------------------------------
 0   libruby.1.9.1.dylib                 0x000000010014c64e rb_vm_bugreport + 110
 1   libruby.1.9.1.dylib                 0x00000001000404c3 report_bug + 259
 2   libruby.1.9.1.dylib                 0x0000000100040631 rb_bug + 161
 3   libruby.1.9.1.dylib                 0x00000001000e30a2 sigbus + 18
 4   libSystem.B.dylib                   0x00007fff893571ba _sigtramp + 26
 5   ???                                 0x0000000100896420 0x0 + 4303971360
 
 [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
=end

----------------------------------------
Backport #4945: Segfault on Fiber#resume on Mac OS X 10.6.8
http://redmine.ruby-lang.org/issues/4945

Author: Dan Weinand
Status: Open
Priority: Normal
Assignee: 
Category: 
Target version: 


=begin
When calling resume such as:

 f = Fiber.new { puts "foo" }
 f.resume

I'm getting the following segfault:

 (irb):2: [BUG] Segmentation fault
 ruby 1.9.2p274 (2011-06-06) [x86_64-darwin10.8.0]
 
 -- control frame ----------
 c:0024 p:---- s:0085 b:0085 l:000084 d:000084 CFUNC  :resume
 c:0023 p:0011 s:0082 b:0082 l:001938 d:000081 EVAL   (irb):2
 c:0022 p:---- s:0080 b:0080 l:000079 d:000079 FINISH
 c:0021 p:---- s:0078 b:0078 l:000077 d:000077 CFUNC  :eval
 c:0020 p:0028 s:0071 b:0071 l:000070 d:000070 METHOD /Users/dweinand/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/irb/workspace.rb:80
 c:0019 p:0033 s:0064 b:0063 l:000062 d:000062 METHOD /Users/dweinand/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/irb/context.rb:254
 c:0018 p:0031 s:0058 b:0058 l:000878 d:000057 BLOCK  /Users/dweinand/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/irb.rb:159
 c:0017 p:0042 s:0050 b:0050 l:000049 d:000049 METHOD /Users/dweinand/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/irb.rb:273
 c:0016 p:0011 s:0045 b:0045 l:000878 d:000044 BLOCK  /Users/dweinand/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/irb.rb:156
 c:0015 p:0144 s:0041 b:0041 l:000024 d:000040 BLOCK  /Users/dweinand/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/irb/ruby-lex.rb:243
 c:0014 p:---- s:0038 b:0038 l:000037 d:000037 FINISH
 c:0013 p:---- s:0036 b:0036 l:000035 d:000035 CFUNC  :loop
 c:0012 p:0009 s:0033 b:0033 l:000024 d:000032 BLOCK  /Users/dweinand/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/irb/ruby-lex.rb:229
 c:0011 p:---- s:0031 b:0031 l:000030 d:000030 FINISH
 c:0010 p:---- s:0029 b:0029 l:000028 d:000028 CFUNC  :catch
 c:0009 p:0023 s:0025 b:0025 l:000024 d:000024 METHOD /Users/dweinand/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/irb/ruby-lex.rb:228
 c:0008 p:0046 s:0022 b:0022 l:000878 d:000878 METHOD /Users/dweinand/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/irb.rb:155
 c:0007 p:0011 s:0019 b:0019 l:001e48 d:000018 BLOCK  /Users/dweinand/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/irb.rb:70
 c:0006 p:---- s:0017 b:0017 l:000016 d:000016 FINISH
 c:0005 p:---- s:0015 b:0015 l:000014 d:000014 CFUNC  :catch
 c:0004 p:0183 s:0011 b:0011 l:001e48 d:001e48 METHOD /Users/dweinand/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/irb.rb:69
 c:0003 p:0142 s:0006 b:0006 l:0014e8 d:0004c8 EVAL   /Users/dweinand/.rvm/rubies/ruby-1.9.2-head/bin/irb:16
 c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH
 c:0001 p:0000 s:0002 b:0002 l:0014e8 d:0014e8 TOP   
 ---------------------------
 -- Ruby level backtrace information ----------------------------------------
 /Users/dweinand/.rvm/rubies/ruby-1.9.2-head/bin/irb:16:in `<main>'
 /Users/dweinand/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/irb.rb:69:in `start'
 /Users/dweinand/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/irb.rb:69:in `catch'
 /Users/dweinand/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/irb.rb:70:in `block in start'
 /Users/dweinand/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/irb.rb:155:in `eval_input'
 /Users/dweinand/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/irb/ruby-lex.rb:228:in `each_top_level_statement'
 /Users/dweinand/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/irb/ruby-lex.rb:228:in `catch'
 /Users/dweinand/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/irb/ruby-lex.rb:229:in `block in each_top_level_statement'
 /Users/dweinand/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/irb/ruby-lex.rb:229:in `loop'
 /Users/dweinand/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/irb/ruby-lex.rb:243:in `block (2 levels) in each_top_level_statement'
 /Users/dweinand/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/irb.rb:156:in `block in eval_input'
 /Users/dweinand/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/irb.rb:273:in `signal_status'
 /Users/dweinand/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/irb.rb:159:in `block (2 levels) in eval_input'
 /Users/dweinand/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/irb/context.rb:254:in `evaluate'
 /Users/dweinand/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/irb/workspace.rb:80:in `evaluate'
 /Users/dweinand/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/irb/workspace.rb:80:in `eval'
 (irb):2:in `irb_binding'
 (irb):2:in `resume'
 
 -- C level backtrace information -------------------------------------------
 
 [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


This doesn't appear to be a problem on 1.9.3-head and may be related to Issue #4827.
=end



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