From: "luislavena (Luis Lavena)" <luislavena@...>
Date: 2013-05-22T22:11:38+09:00
Subject: [ruby-core:55119] [Backport 200 - Backport #8431] File.read() crash on Win32SP3 32bit


Issue #8431 has been updated by luislavena (Luis Lavena).

Assignee changed from nagachika (Tomoyuki Chikanaga) to nobu (Nobuyoshi Nakada)
% Done changed from 100 to 50

nobu-san, do you want me to commit the missing fix?
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Backport #8431: File.read() crash on Win32SP3 32bit
https://bugs.ruby-lang.org/issues/8431#change-39487

Author: galnaktar (Oleg K)
Status: Assigned
Priority: Normal
Assignee: nobu (Nobuyoshi Nakada)
Category: 
Target version: 


Open existing empty file, seek on 0xFFFFFFFF(4294967295) and trying to read 1 byte.


c:\Ruby200\bin>irb
DL is deprecated, please use Fiddle
irb(main):001:0> f = File.open("1", "w")
=> #<File:1>
irb(main):002:0> f.close
=> nil
irb(main):003:0> f = File.open("1", "rb")
=> #<File:1>
irb(main):004:0> f.seek(4294967295)
=> 0
irb(main):005:0> f.read(1)
(irb):5: [BUG] rb_sys_fail_str(1) - errno == 0
ruby 2.0.0p195 (2013-05-14) [i386-mingw32]

-- Control frame information -----------------------------------------------
c:0019 p:---- s:0076 e:000075 CFUNC  :read
c:0018 p:0007 s:0072 e:000071 EVAL   (irb):5 [FINISH]
c:0017 p:---- s:0070 e:000069 CFUNC  :eval
c:0016 p:0024 s:0063 e:000062 METHOD c:/Ruby200/lib/ruby/2.0.0/irb/workspace.rb:


-- 
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