From: Daniel Berger <djberg96@...>
Date: 2006-05-28T14:05:44+09:00
Subject: String segfault with wide character function, Windows

Ruby 1.8.4 (one click)
Windows XP

Check this out segfault:

# strtest.rb
require 'Win32API'

GetFullPathNameW = Win32API.new('kernel32','GetFullPathNameW','PLPP', 'L')

path = "C:\\test"
buf  = 0.chr * 260

if GetFullPathNameW.call(path, buf.size, buf, 0) == 0
    puts "Failed"
end

#p buf
p buf.split("\0\0").first # boom!

# Result
strtest.rb:13: [BUG] Segmentation fault
ruby 1.8.4 (2005-12-24) [i386-mswin32]

This application has requested the Runtime to terminate it in an unusual 
way. Please contact the application's support team for more information.

I noticed that if I dropped the 'buf' to 245 or fewer characters, it 
works ok.  Also, it segfaults on just about any op that modifies buf, 
not just String#split.

Any ideas?

Thanks,

Dan