From https://ftp.gnu.org/gnu/bash/bash-4.4-patches/bash44-010

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

			     BASH PATCH REPORT
			     =================

Bash-Release:	4.4
Patch-ID:	bash44-010

Bug-Reported-by:	Clark Wang <dearvoid@gmail.com>
Bug-Reference-ID:	<CADv8-og092RvvUUHy46=BPKChCXw5g=GOOqgN0V3f4a3TpLebQ@mail.gmail.com>
Bug-Reference-URL:	http://lists.gnu.org/archive/html/bug-bash/2016-11/msg00104.html

Bug-Description:

Depending on compiler optimizations and behavior, the `read' builtin may not
save partial input when a timeout occurs.

Patch (apply with `patch -p0'):

*** bash-4.4-patched/builtins/read.def	2016-05-16 14:24:56.000000000 -0400
--- b/builtins/read.def	2016-11-25 12:37:56.000000000 -0500
***************
*** 182,186 ****
  {
    register char *varname;
!   int size, i, nr, pass_next, saw_escape, eof, opt, retval, code, print_ps2;
    int input_is_tty, input_is_pipe, unbuffered_read, skip_ctlesc, skip_ctlnul;
    int raw, edit, nchars, silent, have_timeout, ignore_delim, fd, lastsig, t_errno;
--- b/182,187 ----
  {
    register char *varname;
!   int size, nr, pass_next, saw_escape, eof, opt, retval, code, print_ps2;
!   volatile int i;
    int input_is_tty, input_is_pipe, unbuffered_read, skip_ctlesc, skip_ctlnul;
    int raw, edit, nchars, silent, have_timeout, ignore_delim, fd, lastsig, t_errno;

*** bash-4.4/patchlevel.h	2016-06-22 14:51:03.000000000 -0400
--- b/patchlevel.h	2016-10-01 11:01:28.000000000 -0400
***************
*** 26,30 ****
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 9
  
  #endif /* _PATCHLEVEL_H_ */
--- b/26,30 ----
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 10
  
  #endif /* _PATCHLEVEL_H_ */