TMPDIR on shared folder causes problems with bash heredoc

[mwader]

When running bash with TMPDIR pointing to a shared folder (vboxsf) bash heredoc does not work.

Attaching Vagrantfile and shell script to reproduce.

Steps:

1. Put Vagrantfile and test.bash in a directory
2. vagrant up
3. vagrant ssh
4. cd /vagrant
5. bash test.bash

Error: cat: -: No such file or directory

Notes about the strace log file: /vagrant/sh-thd-1390487659 is a temporary heredoc file. Seems somehow fd 0 that is the unlinked heredoc temp file does not survive execve or at least causes fstat64 to return error.

[mwader]

Vagrantfile

[mwader]

Reproduction shell script

[mwader]

Output from strace -f bash test.bash

[aeichner]

Please reopen if still relevant with a recent VirtualBox release.