#!/usr/bin/env ruby
require ‘readline’

include Readline

complete_me = {
‘get’ => ‘You selected Get’,
‘put’ => ‘You selected Put’
}

loop do

Readline.completion_proc = proc { |line|
complete_me.keys.grep(/^#{Regexp.quote(line)}/)
}
meth = readline(“Method: “, true)
break unless meth
meth = meth.strip
next if meth.empty?
puts complete_me[meth]

end # begin

when run on ruby-enterprise-1.8.6-20080810
works fine (pressing tab doesn’t crash)

when running on ruby-enterprise-1.8.6-20090113
crashes (not all the time)

ruby readline-bug.rb
Method: *** glibc detected *** ruby: free(): invalid next size (fast): 0×000000000eafb1f0 ***
======= Backtrace: =========
/lib64/libc.so.6[0x33e6a71834]
/lib64/libc.so.6(cfree+0×8c)[0x33e6a74e7c]
/usr/lib64/libreadline.so.5[0x33e8219925]
/usr/lib64/libreadline.so.5(rl_complete_internal+0×10b)[0x33e821b41b]
/usr/lib64/libreadline.so.5(_rl_dispatch_subseq+0xcf)[0x33e821434f]
/usr/lib64/libreadline.so.5(readline_internal_char+0×9b)[0x33e8214a5b]
/usr/lib64/libreadline.so.5(readline+0×55)[0x33e8214e65]
ruby(rb_protect+0×111)[0x412af1]
/opt/ruby-enterprise-1.8.6-20090113/lib/ruby/1.8/x86_64-linux/readline.so[0x2b648e1a636e]

because it happens not all the time, and the only other activity at this time might be from GC – I think either GC is too agressive, or GC reference integrity is broken (reference counter =>
GC frees an memory that still used or readline.c binding has a memory bug)

we have model object Event

run script/console
try auto-completion (TAB – read TAB where it says f***)

[super@sql1 super]$ ./script/console
Loading production environment (Rails 2.1.2)
>> Event.f*** glibc detected *** irb: double free or corruption (!prev): 0×000000001cfbbcb0 ***
======= Backtrace: =========
/lib64/libc.so.6[0x33e6a71834]
/lib64/libc.so.6(cfree+0×8c)[0x33e6a74e7c]
/usr/lib64/libreadline.so.5[0x33e8219925]
/usr/lib64/libreadline.so.5(rl_complete_internal+0×10b)[0x33e821b41b]
/usr/lib64/libreadline.so.5(_rl_dispatch_subseq+0xcf)[0x33e821434f]
/usr/lib64/libreadline.so.5(readline_internal_char+0×9b)[0x33e8214a5b]
/usr/lib64/libreadline.so.5(readline+0×55)[0x33e8214e65]
irb(rb_protect+0×111)[0x412af1]
/opt/ruby-enterprise-1.8.6-20090113/lib/ruby/1.8/x86_64-linux/readline.so[0x2b6b0644d36e]

http://www.modrails.com/documentation/Users%20guide.html#RailsAllowModRewrite

Ruby Enterprise Edition (REE) is a server-oriented distribution of the official Ruby interpreter, and includes various additional enhancements…
I also updated my Arch Linux package….

right now I don’t know how to use passenger because we forward our blog to wordpress
#blog settings to let apache server wordpress
#this rewrite rule needs to be before merb rewrites
Alias /blog /var/www/devver/blog
RewriteRule ^/blog – [QSA,L]

Keep up the good work I love passenger and REE. Both are incredibly useful.

/usr/libexec/gcc/powerpc-apple-darwin8/4.0.1/ld: unknown flag: -rpath

The “-rpath” flag was introduced with Leopard.