Backport #5634: yield and binding

• Status: Closed
• Assignee: usa (Usaku NAKAMURA)

[trans (Thomas Sawyer)]

Per my recent question on ruby-core... "well there's your problem":

def x
binding
end
=> nil
b = x{|a|a+a}
=> #Binding:0x0000000103f1a0
b.eval('yield(2)')

(irb):2: [BUG] Segmentation fault
ruby 1.9.3dev (2011-09-23 revision 33323) [x86_64-linux]

-- Control frame information -----------------------------------------------
c:0026 p:0007 s:0091 b:0090 l:001ff8 d:000089 EVAL (irb):2
c:0025 p:---- s:0088 b:0088 l:000087 d:000087 FINISH
c:0024 p:---- s:0086 b:0086 l:000085 d:000085 CFUNC :eval
c:0023 p:0013 s:0082 b:0082 l:0009a8 d:000081 EVAL (irb):6
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 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb/workspace.rb:80
c:0019 p:0033 s:0064 b:0063 l:000062 d:000062 METHOD /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb/context.rb:254
c:0018 p:0031 s:0058 b:0058 l:000a28 d:000057 BLOCK /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb.rb:159
c:0017 p:0042 s:0050 b:0050 l:000049 d:000049 METHOD /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb.rb:273
c:0016 p:0011 s:0045 b:0045 l:000a28 d:000044 BLOCK /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb.rb:156
c:0015 p:0144 s:0041 b:0041 l:000024 d:000040 BLOCK /home/trans/.rbenv/versions/1.9.3-rc1/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 /home/trans/.rbenv/versions/1.9.3-rc1/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 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb/ruby-lex.rb:228
c:0008 p:0046 s:0022 b:0022 l:000a28 d:000a28 METHOD /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb.rb:155
c:0007 p:0011 s:0019 b:0019 l:000658 d:000018 BLOCK /home/trans/.rbenv/versions/1.9.3-rc1/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:000658 d:000658 METHOD /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb.rb:69
c:0003 p:0039 s:0006 b:0006 l:0007a8 d:001e18 EVAL /home/trans/.rbenv/versions/1.9.3-rc1/bin/irb:12
c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH
c:0001 p:0000 s:0002 b:0002 l:0007a8 d:0007a8 TOP

-- Ruby level backtrace information ----------------------------------------
/home/trans/.rbenv/versions/1.9.3-rc1/bin/irb:12:in <main>' /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb.rb:69:in start'
/home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb.rb:69:in catch' /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb.rb:70:in block in start'
/home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb.rb:155:in eval_input' /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb/ruby-lex.rb:228:in each_top_level_statement'
/home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb/ruby-lex.rb:228:in catch' /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb/ruby-lex.rb:229:in block in each_top_level_statement'
/home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb/ruby-lex.rb:229:in loop' /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb/ruby-lex.rb:243:in block (2 levels) in each_top_level_statement'
/home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb.rb:156:in block in eval_input' /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb.rb:273:in signal_status'
/home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb.rb:159:in block (2 levels) in eval_input' /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb/context.rb:254:in evaluate'
/home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb/workspace.rb:80:in evaluate' /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb/workspace.rb:80:in eval'
(irb):6:in irb_binding' (irb):6:in eval'
(irb):2:in `x'

-- C level backtrace information -------------------------------------------
irb() [0x526f18]
irb() [0x56ecb8]
irb(rb_bug+0xb3) [0x56ee53]
irb() [0x4b42b0]
/lib/libpthread.so.0(+0xf8f0) [0x7f8c9f5d38f0]
irb() [0x517a16]
irb() [0x51ba3b]
irb() [0x51c4da]
irb() [0x51ca86]
irb() [0x41ac06]
irb() [0x52072e]
irb() [0x5178d7]
irb() [0x51ba3b]
irb() [0x51c4da]
irb() [0x51ca86]
irb() [0x52072e]
irb() [0x5178d7]
irb() [0x51ba3b]
irb() [0x526259]
irb(rb_rescue2+0x15b) [0x417b9b]
irb() [0x5119c9]
irb() [0x52072e]
irb() [0x5178d7]
irb() [0x51ba3b]
irb() [0x51eb0e]
irb(rb_catch_obj+0xbe) [0x51082e]
irb() [0x51161a]
irb() [0x52072e]
irb() [0x5178d7]
irb() [0x51ba3b]
irb() [0x51eb0e]
irb(rb_catch_obj+0xbe) [0x51082e]
irb() [0x51161a]
irb() [0x52072e]
irb() [0x5178d7]
irb() [0x51ba3b]
irb(rb_iseq_eval_main+0x292) [0x51be72]
irb() [0x417f32]
irb(ruby_run_node+0x36) [0x419ff6]
irb() [0x4170d9]
/lib/libc.so.6(__libc_start_main+0xfd) [0x7f8c9e997c4d]
irb() [0x416fc9]

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

• Loaded script: irb

• Loaded features:

  0 enumerator.so
  1 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/enc/encdb.so
  2 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/enc/trans/transdb.so
  3 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/rubygems/defaults.rb
  4 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/rbconfig.rb
  5 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/rubygems/deprecate.rb
  6 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/rubygems/exceptions.rb
  7 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/rubygems/custom_require.rb
  8 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/rubygems.rb
  9 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/psych.so
  10 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/stringio.so
  11 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/psych/nodes/node.rb
  12 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/psych/nodes/stream.rb
  13 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/psych/nodes/document.rb
  14 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/psych/nodes/sequence.rb
  15 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/psych/nodes/scalar.rb
  16 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/psych/nodes/mapping.rb
  17 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/psych/nodes/alias.rb
  18 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/psych/nodes.rb
  19 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/psych/streaming.rb
  20 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/psych/visitors/visitor.rb
  21 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/strscan.so
  22 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/psych/scalar_scanner.rb
  23 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/psych/visitors/to_ruby.rb
  24 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/psych/visitors/emitter.rb
  25 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/psych/visitors/yaml_tree.rb
  26 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/psych/json/ruby_events.rb
  27 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/psych/visitors/json_tree.rb
  28 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/psych/visitors/depth_first.rb
  29 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/psych/visitors.rb
  30 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/psych/handler.rb
  31 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/psych/tree_builder.rb
  32 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/psych/parser.rb
  33 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/psych/omap.rb
  34 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/psych/set.rb
  35 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/psych/coder.rb
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  37 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/date_core.so
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  40 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/psych/deprecated.rb
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  42 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/psych.rb
  43 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/yaml.rb
  44 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/site_ruby/1.9.1/roll/core_ext/rbconfig.rb
  45 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/site_ruby/1.9.1/roll/xdg.rb
  46 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/site_ruby/1.9.1/roll/control.rb
  47 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/site_ruby/1.9.1/roll/command.rb
  48 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/site_ruby/1.9.1/roll/original.rb
  49 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/site_ruby/1.9.1/roll/core_ext/file.rb
  50 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/site_ruby/1.9.1/roll/library/requirements.rb
  51 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/site_ruby/1.9.1/roll/library/metadata.rb
  52 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/site_ruby/1.9.1/roll/library/script.rb
  53 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/site_ruby/1.9.1/roll/library/version.rb
  54 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/site_ruby/1.9.1/roll/library.rb
  55 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/site_ruby/1.9.1/roll/ruby.rb
  56 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/site_ruby/1.9.1/roll/kernel.rb
  57 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/site_ruby/1.9.1/roll.rb
  58 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/site_ruby/1.9.1/oll.rb
  59 ubygems.rb
  60 rubygems.rb
  61 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/ubygems.rb
  62 irb.rb
  63 e2mmap.rb
  64 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/e2mmap.rb
  65 irb/init.rb
  66 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb/init.rb
  67 irb/context.rb
  68 irb/workspace.rb
  69 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb/workspace.rb
  70 irb/inspector.rb
  71 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb/inspector.rb
  72 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb/context.rb
  73 irb/extend-command.rb
  74 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb/extend-command.rb
  75 irb/ruby-lex.rb
  76 irb/slex.rb
  77 irb/notifier.rb
  78 irb/output-method.rb
  79 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb/output-method.rb
  80 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb/notifier.rb
  81 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb/slex.rb
  82 irb/ruby-token.rb
  83 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb/ruby-token.rb
  84 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb/ruby-lex.rb
  85 irb/input-method.rb
  86 irb/src_encoding.rb
  87 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb/src_encoding.rb
  88 irb/magic-file.rb
  89 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb/magic-file.rb
  90 readline.so
  91 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/readline.so
  92 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb/input-method.rb
  93 irb/locale.rb
  94 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb/locale.rb
  95 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb.rb
  96 rubygems/version.rb
  97 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/rubygems/version.rb
  98 rubygems/requirement.rb
  99 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/rubygems/requirement.rb
  100 rubygems/platform.rb
  101 rubygems/deprecate.rb
  102 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/rubygems/platform.rb
  103 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/rubygems/specification.rb
  104 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/rubygems/path_support.rb
  105 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/rubygems/dependency.rb
  106 ostruct.rb
  107 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/ostruct.rb
  108 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/gems/1.9.1/gems/wirble-0.1.3/lib/wirble.rb
  109 pp.rb
  110 prettyprint.rb
  111 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/prettyprint.rb
  112 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/pp.rb
  113 irb/completion.rb
  114 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/irb/completion.rb

• Process memory map:

00400000-00616000 r-xp 00000000 08:01 5575135 /home/trans/.rbenv/versions/1.9.3-rc1/bin/ruby
00815000-00816000 r--p 00215000 08:01 5575135 /home/trans/.rbenv/versions/1.9.3-rc1/bin/ruby
00816000-00818000 rw-p 00216000 08:01 5575135 /home/trans/.rbenv/versions/1.9.3-rc1/bin/ruby
00818000-00834000 rw-p 00000000 00:00 0
00a47000-012f9000 rw-p 00000000 00:00 0 [heap]
7f8c9d264000-7f8c9d27a000 r-xp 00000000 08:01 18972791 /lib/libgcc_s.so.1
7f8c9d27a000-7f8c9d479000 ---p 00016000 08:01 18972791 /lib/libgcc_s.so.1
7f8c9d479000-7f8c9d47a000 r--p 00015000 08:01 18972791 /lib/libgcc_s.so.1
7f8c9d47a000-7f8c9d47b000 rw-p 00016000 08:01 18972791 /lib/libgcc_s.so.1
7f8c9d47b000-7f8c9d4b9000 r-xp 00000000 08:01 18972805 /lib/libncurses.so.5.7
7f8c9d4b9000-7f8c9d6b9000 ---p 0003e000 08:01 18972805 /lib/libncurses.so.5.7
7f8c9d6b9000-7f8c9d6bd000 r--p 0003e000 08:01 18972805 /lib/libncurses.so.5.7
7f8c9d6bd000-7f8c9d6be000 rw-p 00042000 08:01 18972805 /lib/libncurses.so.5.7
7f8c9d6be000-7f8c9d6f7000 r-xp 00000000 08:01 18972819 /lib/libreadline.so.6.1
7f8c9d6f7000-7f8c9d8f6000 ---p 00039000 08:01 18972819 /lib/libreadline.so.6.1
7f8c9d8f6000-7f8c9d8f8000 r--p 00038000 08:01 18972819 /lib/libreadline.so.6.1
7f8c9d8f8000-7f8c9d8fe000 rw-p 0003a000 08:01 18972819 /lib/libreadline.so.6.1
7f8c9d8fe000-7f8c9d8ff000 rw-p 00000000 00:00 0
7f8c9d8ff000-7f8c9d905000 r-xp 00000000 08:01 8702444 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/readline.so
7f8c9d905000-7f8c9db04000 ---p 00006000 08:01 8702444 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/readline.so
7f8c9db04000-7f8c9db05000 r--p 00005000 08:01 8702444 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/readline.so
7f8c9db05000-7f8c9db06000 rw-p 00006000 08:01 8702444 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/readline.so
7f8c9db06000-7f8c9db3a000 r-xp 00000000 08:01 8702448 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/date_core.so
7f8c9db3a000-7f8c9dd39000 ---p 00034000 08:01 8702448 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/date_core.so
7f8c9dd39000-7f8c9dd3a000 r--p 00033000 08:01 8702448 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/date_core.so
7f8c9dd3a000-7f8c9dd3b000 rw-p 00034000 08:01 8702448 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/date_core.so
7f8c9dd3b000-7f8c9dd3c000 rw-p 00000000 00:00 0
7f8c9dd3c000-7f8c9dd41000 r-xp 00000000 08:01 8702451 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/strscan.so
7f8c9dd41000-7f8c9df41000 ---p 00005000 08:01 8702451 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/strscan.so
7f8c9df41000-7f8c9df42000 r--p 00005000 08:01 8702451 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/strscan.so
7f8c9df42000-7f8c9df43000 rw-p 00006000 08:01 8702451 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/strscan.so
7f8c9df43000-7f8c9df4a000 r-xp 00000000 08:01 8702446 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/stringio.so
7f8c9df4a000-7f8c9e149000 ---p 00007000 08:01 8702446 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/stringio.so
7f8c9e149000-7f8c9e14a000 r--p 00006000 08:01 8702446 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/stringio.so
7f8c9e14a000-7f8c9e14b000 rw-p 00007000 08:01 8702446 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/stringio.so
7f8c9e14b000-7f8c9e16a000 r-xp 00000000 08:01 39535253 /home/trans/.rbenv/versions/1.9.3-rc1/lib/libyaml-0.so.2.0.2
7f8c9e16a000-7f8c9e369000 ---p 0001f000 08:01 39535253 /home/trans/.rbenv/versions/1.9.3-rc1/lib/libyaml-0.so.2.0.2
7f8c9e369000-7f8c9e36a000 r--p 0001e000 08:01 39535253 /home/trans/.rbenv/versions/1.9.3-rc1/lib/libyaml-0.so.2.0.2
7f8c9e36a000-7f8c9e36b000 rw-p 0001f000 08:01 39535253 /home/trans/.rbenv/versions/1.9.3-rc1/lib/libyaml-0.so.2.0.2
7f8c9e36b000-7f8c9e370000 r-xp 00000000 08:01 8702452 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/psych.so
7f8c9e370000-7f8c9e570000 ---p 00005000 08:01 8702452 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/psych.so
7f8c9e570000-7f8c9e571000 r--p 00005000 08:01 8702452 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/psych.so
7f8c9e571000-7f8c9e572000 rw-p 00006000 08:01 8702452 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/psych.so
7f8c9e572000-7f8c9e574000 r-xp 00000000 08:01 9421126 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/enc/trans/transdb.so
7f8c9e574000-7f8c9e774000 ---p 00002000 08:01 9421126 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/enc/trans/transdb.so
7f8c9e774000-7f8c9e775000 r--p 00002000 08:01 9421126 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/enc/trans/transdb.so
7f8c9e775000-7f8c9e776000 rw-p 00003000 08:01 9421126 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/enc/trans/transdb.so
7f8c9e776000-7f8c9e778000 r-xp 00000000 08:01 9421099 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/enc/encdb.so
7f8c9e778000-7f8c9e977000 ---p 00002000 08:01 9421099 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/enc/encdb.so
7f8c9e977000-7f8c9e978000 r--p 00001000 08:01 9421099 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/enc/encdb.so
7f8c9e978000-7f8c9e979000 rw-p 00002000 08:01 9421099 /home/trans/.rbenv/versions/1.9.3-rc1/lib/ruby/1.9.1/x86_64-linux/enc/encdb.so
7f8c9e979000-7f8c9eaf3000 r-xp 00000000 08:01 18972789 /lib/libc-2.11.1.so
7f8c9eaf3000-7f8c9ecf2000 ---p 0017a000 08:01 18972789 /lib/libc-2.11.1.so
7f8c9ecf2000-7f8c9ecf6000 r--p 00179000 08:01 18972789 /lib/libc-2.11.1.so
7f8c9ecf6000-7f8c9ecf7000 rw-p 0017d000 08:01 18972789 /lib/libc-2.11.1.so
7f8c9ecf7000-7f8c9ecfc000 rw-p 00000000 00:00 0
7f8c9ecfc000-7f8c9ed7e000 r-xp 00000000 08:01 18972854 /lib/libm-2.11.1.so
7f8c9ed7e000-7f8c9ef7d000 ---p 00082000 08:01 18972854 /lib/libm-2.11.1.so
7f8c9ef7d000-7f8c9ef7e000 r--p 00081000 08:01 18972854 /lib/libm-2.11.1.so
7f8c9ef7e000-7f8c9ef7f000 rw-p 00082000 08:01 18972854 /lib/libm-2.11.1.so
7f8c9ef7f000-7f8c9ef88000 r-xp 00000000 08:01 18972806 /lib/libcrypt-2.11.1.so
7f8c9ef88000-7f8c9f188000 ---p 00009000 08:01 18972806 /lib/libcrypt-2.11.1.so
7f8c9f188000-7f8c9f189000 r--p 00009000 08:01 18972806 /lib/libcrypt-2.11.1.so
7f8c9f189000-7f8c9f18a000 rw-p 0000a000 08:01 18972806 /lib/libcrypt-2.11.1.so
7f8c9f18a000-7f8c9f1b8000 rw-p 00000000 00:00 0
7f8c9f1b8000-7f8c9f1ba000 r-xp 00000000 08:01 18972823 /lib/libdl-2.11.1.so
7f8c9f1ba000-7f8c9f3ba000 ---p 00002000 08:01 18972823 /lib/libdl-2.11.1.so
7f8c9f3ba000-7f8c9f3bb000 r--p 00002000 08:01 18972823 /lib/libdl-2.11.1.so
7f8c9f3bb000-7f8c9f3bc000 rw-p 00003000 08:01 18972823 /lib/libdl-2.11.1.so
7f8c9f3bc000-7f8c9f3c3000 r-xp 00000000 08:01 18973094 /lib/librt-2.11.1.so
7f8c9f3c3000-7f8c9f5c2000 ---p 00007000 08:01 18973094 /lib/librt-2.11.1.so
7f8c9f5c2000-7f8c9f5c3000 r--p 00006000 08:01 18973094 /lib/librt-2.11.1.so
7f8c9f5c3000-7f8c9f5c4000 rw-p 00007000 08:01 18973094 /lib/librt-2.11.1.so
7f8c9f5c4000-7f8c9f5dc000 r-xp 00000000 08:01 18973092 /lib/libpthread-2.11.1.so
7f8c9f5dc000-7f8c9f7db000 ---p 00018000 08:01 18973092 /lib/libpthread-2.11.1.so
7f8c9f7db000-7f8c9f7dc000 r--p 00017000 08:01 18973092 /lib/libpthread-2.11.1.so
7f8c9f7dc000-7f8c9f7dd000 rw-p 00018000 08:01 18973092 /lib/libpthread-2.11.1.so
7f8c9f7dd000-7f8c9f7e1000 rw-p 00000000 00:00 0
7f8c9f7e1000-7f8c9f801000 r-xp 00000000 08:01 18972752 /lib/ld-2.11.1.so
7f8c9f894000-7f8c9f995000 rw-p 00000000 00:00 0
7f8c9f995000-7f8c9f9d4000 r--p 00000000 08:01 10846233 /usr/lib/locale/en_US.utf8/LC_CTYPE
7f8c9f9d4000-7f8c9f9d9000 rw-p 00000000 00:00 0
7f8c9f9f1000-7f8c9f9f3000 rw-p 00000000 00:00 0
7f8c9f9f3000-7f8c9f9f4000 ---p 00000000 00:00 0
7f8c9f9f4000-7f8c9f9f7000 rw-p 00000000 00:00 0
7f8c9f9f7000-7f8c9f9fe000 r--s 00000000 08:01 23150643 /usr/lib/gconv/gconv-modules.cache
7f8c9f9fe000-7f8c9fa00000 rw-p 00000000 00:00 0
7f8c9fa00000-7f8c9fa01000 r--p 0001f000 08:01 18972752 /lib/ld-2.11.1.so
7f8c9fa01000-7f8c9fa02000 rw-p 00020000 08:01 18972752 /lib/ld-2.11.1.so
7f8c9fa02000-7f8c9fa03000 rw-p 00000000 00:00 0
7fffaa009000-7fffaa01f000 rw-p 00000000 00:00 0 [stack]
7fffaa095000-7fffaa096000 r-xp 00000000 00:00 0 [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall]

[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

Aborted

[nobu (Nobuyoshi Nakada)]

I could reproduce it with 2.0.0dev on darwin11, but only with irb.
Still can't simplify it without irb.

[nobu (Nobuyoshi Nakada)]

=begin
Probably, this would be the simplest code.

$ ./miniruby -e 'def x;binding;end' -e 'b = eval(%[x{}])' -e 'b.eval("yield")'
-e:1: [BUG] Segmentation fault
ruby 2.0.0dev (2011-11-15 trunk 33755) [x86_64-darwin11.0]
=end

[nobu (Nobuyoshi Nakada)]

• Category set to core
• Target version set to 2.0.0

[phasis68 (Heesob Park)]

This segmentation fault occurs on the line #949 of vm_insnhelper.c(vm_invoke_block)
if (BUILTIN_TYPE(iseq) != T_NODE) {

The variable iseq is NULL in this case.

[ko1 (Koichi Sasada)]

• Assignee set to ko1 (Koichi Sasada)

[shyouhei (Shyouhei Urabe)]

• Status changed from Open to Assigned

[ko1 (Koichi Sasada)]

• Priority changed from Normal to 5

[ko1 (Koichi Sasada)]

• Status changed from Assigned to Feedback

Not reproduced at trunk.
Someone fixed it?

Reproducible at trunk with this code:

def x
  binding
end

eval("x { }").eval "yield"

Curiously, the segfault only occurs if the call to 'x' happens inside eval.

[ko1 (Koichi Sasada)]

Thank you!

Priority -> High.

The presence of a block arg seems to prevent the segfault.

This works as expected:

def f(&bk); binding; end
eval("f { puts 'hi' }").eval("yield")

This segfaults:

def f(); binding; end
eval("f { puts 'hi' }").eval("yield")

[ko1 (Koichi Sasada)]

The following code is also cause same bug.

def x
binding
end

def m
x{p 1}
end

eval('yield', m)

I think I may have a solution, just making sure my patch doesn't break anything else first...

• File fix-yield-from-eval-segfault.patch fix-yield-from-eval-segfault.patch added

The attached patch seems to fix it for me. I ran 'make test-all' and only one (unrelated) test failed so I don't think I've broken anything.

[ko1 (Koichi Sasada)]

(2012/11/27 18:47), charliesome (Charlie Somerville) wrote:

The attached patch seems to fix it for me. I ran 'make test-all' and only one (unrelated) test failed so I don't think I've broken anything.

Unfortunately, your patch will not solve the issue.

Could you try it?

def x
binding
end

def m1
x{p 1}
end

def m2
x{p 2}
end

b_m1 = m1
b_m2 = m2
eval('yield', m1)

--
// SASADA Koichi at atdot dot net

[ko1 (Koichi Sasada)]

(2012/11/27 19:11), SASADA Koichi wrote:

eval('yield', m1)

Ah, "eval('yield', b_m1)" I want to write.

--
// SASADA Koichi at atdot dot net

[ko1 (Koichi Sasada)]

• Status changed from Feedback to Closed
• % Done changed from 0 to 100

This issue was solved with changeset r37898.
Thomas, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

---

• vm.c (rb_vm_make_env_object): make Proc object if Env is possible
  to point block.
  [ruby-core:41038] [ruby-trunk - Bug #5634]
• vm.c (rb_vm_make_proc): No need to make Proc object here.
• bootstraptest/test_proc.rb: add tests.

[ko1 (Koichi Sasada)]

• Tracker changed from Bug to Backport
• Project changed from Ruby master to Backport193
• Category deleted (core)
• Status changed from Closed to Open
• Assignee changed from ko1 (Koichi Sasada) to usa (Usaku NAKAMURA)
• Priority changed from 5 to Normal
• Target version deleted (2.0.0)

The following patch is for 1.9.3.
I don't run test-all with 1.9.3. Please check it.

---

Index: bootstraptest/test_proc.rb

--- bootstraptest/test_proc.rb (revision 37898)
+++ bootstraptest/test_proc.rb (working copy)
@@ -456,3 +456,27 @@ assert_equal 'ok', %q{
end
}

+assert_equal 'ok', %q{

• def x
• binding
• end
• b = x{|a| a }
• b.eval('yield("ok")')
  +}, '[Bug #5634]'

+assert_equal 'ok', %q{

• def x
• binding
• end
• eval("x { 'ok' }").eval "yield"
  +}, '[Bug #5634]'

+assert_equal 'ok', %q{

• def x
• binding
• end
• def m
• x{ 'ok' }
• end
• eval('yield', m)
  +}, '[Bug #5634]'
  Index: vm.c
  ===================================================================
  --- vm.c (revision 37898)
  +++ vm.c (working copy)
  @@ -467,14 +467,28 @@ vm_collect_local_variables_in_heap(rb_th
  }
  }

+static VALUE vm_make_proc_from_block(rb_thread_t *th, rb_block_t *block);
+
VALUE
rb_vm_make_env_object(rb_thread_t * th, rb_control_frame_t *cfp)
{
VALUE envval;

• VALUE *lfp;

• rb_block_t *blockptr;

  if (VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_FINISH) {
  /* for method_missing */
  cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);

• }

• lfp = cfp->lfp;

• blockptr = GC_GUARDED_PTR_REF(lfp[0]);

• if (blockptr && !(lfp[0] & 0x02)) {

• VALUE blockprocval = vm_make_proc_from_block(th, blockptr);

• rb_proc_t *p;

• GetProcPtr(blockprocval, p);

• lfp[0] = GC_GUARDED_PTR(&p->block);
  }

  envval = vm_make_env_each(th, cfp, cfp->dfp, cfp->lfp);

[ko1 (Koichi Sasada)]

• File env_block.patch env_block.patch added

I fix previous patch (attached fixed one).

[usa (Usaku NAKAMURA)]

• Status changed from Open to Closed

This issue was solved with changeset r38314.
Thomas, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

---

[Backport #5634]

• vm.c (rb_vm_make_env_object): make Proc object if Env is possible
  to point block. [ruby-core:41038] [ruby-trunk - Bug #5634]

• vm.c (rb_vm_make_proc): No need to make Proc object here.

• bootstraptest/test_proc.rb: add tests.