=begin
Hi,
At Thu, 11 Dec 2008 14:00:33 +0900,
Akinori MUSHA wrote in [ruby-core:20471]:
The attached change is planned to be merged but it causes a coredump.
knu@daemon[1]% ruby-1.8 -rstringio -e 'x = StringIO.new("a\nb\nc"); e = x.each; e.each{|i|p i}; e.rewind; e.each{|i| p i }'
"a\n"
"b\n"
"c"
zsh: illegal hardware instruction (core dumped) ruby-1.8 -rstringio -e
SEGV without [BUG] message means system stack overflow.
$ ./ruby -rstringio -e 'x=StringIO.new("a\nb\nc"); e=x.each; e.each{|i|p i}; e.rewind; e.each{|i|p i}'
ruby 1.8.7 (2008-12-09 ruby_1_8 20587) [i686-linux]
"a\n"
"b\n"
"c"
/home/nobu/src/ruby/stable-debug/src/lib/generator.rb:192: warning: method redefined; discarding old next
/home/nobu/src/ruby/stable-debug/src/lib/generator.rb:204: warning: method redefined; discarding old rewind
/home/nobu/src/ruby/stable-debug/src/lib/generator.rb:151:in rewind': stack level too deep (SystemStackError) from /home/nobu/src/ruby/stable-debug/src/lib/generator.rb:205:in rewind'
from /home/nobu/src/ruby/stable-debug/src/lib/generator.rb:152:in rewind' from /home/nobu/src/ruby/stable-debug/src/lib/generator.rb:205:in rewind'
from /home/nobu/src/ruby/stable-debug/src/lib/generator.rb:152:in rewind' from /home/nobu/src/ruby/stable-debug/src/lib/generator.rb:205:in rewind'
from /home/nobu/src/ruby/stable-debug/src/lib/generator.rb:152:in rewind' from /home/nobu/src/ruby/stable-debug/src/lib/generator.rb:205:in rewind'
from /home/nobu/src/ruby/stable-debug/src/lib/generator.rb:152:in rewind' ... 4440 levels... from /home/nobu/src/ruby/stable-debug/src/lib/generator.rb:205:in rewind'
from /home/nobu/src/ruby/stable-debug/src/lib/generator.rb:152:in rewind' from /home/nobu/src/ruby/stable-debug/src/lib/generator.rb:205:in rewind'
from -e:1
genenrator.rb required by Enumerator#rewind in enumerator.c
overrides he methods defined in C.
--
Nobu Nakada
=end
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