[ruby-core:55110] [ruby-trunk - Bug #8431] File.read() crash on Win32SP3 32bit

Issue #8431 has been updated by nobu (Nobuyoshi Nakada).

Backport changed from 1.9.3: UNKNOWN, 2.0.0: UNKNOWN to 1.9.3: REQUIRED, 2.0.0: REQUIRED


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Bug #8431: File.read() crash on Win32SP3 32bit
https://bugs.ruby-lang.org/issues/8431#change-39478

Author: galnaktar (Oleg K)
Status: Closed
Priority: Normal
Assignee: cruby-windows
Category: platform/windows
Target version: 
ruby -v: ruby 2.0.0p195 (2013-05-14) [i386-mingw32]
Backport: 1.9.3: REQUIRED, 2.0.0: REQUIRED


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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