Ruby » Ruby master

Bug #13158

Updated by nobu (Nobuyoshi Nakada) about 7 years ago

When I tried the simple script below, ruby trunk works unexpectedly: 

 ```ruby 
 require 'socket' 

 server = UNIXServer.new('/tmp/yaaaay') 
 thread = Thread.new do 
   begin 
     while sock = server.accept 
       p(here: "accepted", sock: sock) 
       sock.close rescue nil 
     end 
   rescue => e 
     p(here: "rescue", closed: server.closed?, error: e) 
   end 
 end 

 sleep 1 
 server.close 
 sleep 1 
 File.delete('/tmp/yaaaay') 
 ``` 

 The output of this script is: 

 
 ``` 
 # ruby 2.5.0-dev on linux 
 vagrant@vagrant-ubuntu-trusty-64:/vagrant$ ruby -v 
 ruby 2.5.0dev (2017-01-25 trunk 57420) [x86_64-linux] 
 vagrant@vagrant-ubuntu-trusty-64:/vagrant$ ruby hoge.rb  
 {:here=>"rescue", :closed=>false, :error=>#<IOError: stream closed>} 

 # ruby 2.4.0 on linux 
 vagrant@vagrant-ubuntu-trusty-64:/vagrant$ ruby -v 
 ruby 2.4.0p0 (2016-12-24 revision 57164) [x86_64-linux] 
 vagrant@vagrant-ubuntu-trusty-64:/vagrant$ ruby hoge.rb  
 {:here=>"rescue", :closed=>true, :error=>#<IOError: stream closed>} 

 # ruby 2.5.0-dev on osx 
 MBA:fluentd tagomoris$ ruby -v 
 ruby 2.5.0dev (2017-01-24 trunk 57413) [x86_64-darwin15] 
 MBA:fluentd tagomoris$ ruby hoge.rb  
 {:here=>"rescue", :closed=>true, :error=>#<Errno::EBADF: Bad file descriptor>} 

 # full list I tried is here: https://gist.github.com/tagomoris/5bc1b618c5196c693a7b096353eb57e4 
 ``` 

 Raised error class is not mine point. This script with ruby 2.5.0-dev on linux returns false for `server.closed?`. 
 When any errors are raised, we should check whether it's raised by intentional `sever.close` or not. But it doesn't work well on ruby 2.5.0 on linux. 

 Is it possible to fix this problem? 

 Note: When I added some more `p(here: "rescue", closed: server.closed?)` lines in rescue clause, these (2nd and later) puts "true".

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