Public bug reported:

$ cat > Musicians
FALSE
First Name
FALSE
Second Name
FALSE
Third Name
<Press Ctrl+d>
$ zenity --list --title "Select musicians" --text="Some text"
--column="Select" --column="Musician" --checklist --separator="\n"
--height=480 --width=370 < Musicians

The dialogue opens. Now hit OK or Cancel.

Now, sometimes this works, but most of the time the dialogue freeze.
The terminal shows the following:

(zenity:3629): GLib-WARNING **:
/build/buildd/glib2.0-2.32.3/./glib/giounix.c:411Error while getting
flags for FD: Bad file descriptor (9)


(zenity:3629): GLib-WARNING **:
/build/buildd/glib2.0-2.32.3/./glib/giounix.c:411Error while getting
flags for FD: Bad file descriptor (9)


(zenity:3629): GLib-WARNING **:
/build/buildd/glib2.0-2.32.3/./glib/giounix.c:411Error while getting
flags for FD: Bad file descriptor (9)

and so on.

Ctrl+c in the terminal cancels the dialogue.

** Affects: zenity (Ubuntu)
     Importance: Undecided
         Status: New

** Attachment added: "The strace log from a test run"
   
https://bugs.launchpad.net/bugs/1094924/+attachment/3471486/+files/zenity.3405

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https://bugs.launchpad.net/bugs/1094924

Title:
  Freeze: zenity --list … < FileName

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