jruby-1.7.0 Dir::tmpdir returns current directory if it is not world writable. #405
Description
jruby-1.7.0 via rvm 1.6.20 (stable) on ubuntu linux. Dir::tmpdir never returns "/tmp" if current working directory is not
world writable, this behavior is not seen in 1.6.8. This causes programs to use current working directory as the
temporary directory (Dir::mktmpdir).
$ uname -a
Linux ul-01.local 2.6.32-45-server #99-Ubuntu SMP Tue Oct 16 16:41:38 UTC 2012 x86_64 GNU/Linux
io/console not supported; tty will not be manipulated
[1] pry(main)> rd
jruby 1.7.0 (1.9.3p203) 2012-10-22 ff1ebbe on Java HotSpot(TM) 64-Bit Server VM 1.6.0_26-b03 [linux-amd64]
=> nil
[2] pry(main)> .pwd
/home/cpk
[3] pry(main)> .id
uid=1000(cpk) gid=1000(cpk) groups=4(adm),20(dialout),24(cdrom),46(plugdev),109(lpadmin),110(sambashare),111(admin),1000(cpk)
[4] pry(main)> Dir::tmpdir
=> "/home/cpk"
[5] pry(main)> .cd /etc
[6] pry(main)> .pwd
/etc
[7] pry(main)> Dir::tmpdir
=> "/tmp"
[8] pry(main)> .cd /home/cpk
[9] pry(main)> .pwd
/home/cpk
[10] pry(main)> Dir::tmpdir
=> "/home/cpk"
From the source looks like File.stat('.').world_writable? returns nil and '.' is returned.