From https://ftp.gnu.org/gnu/bash/bash-5.0-patches/bash50-007

Signed-off-by: Pascal de Bruijn <p.debruijn@unilogic.nl>

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

Bash-Release:	5.0
Patch-ID:	bash50-007

Bug-Reported-by:	Grisha Levit <grishalevit@gmail.com>
Bug-Reference-ID:	<CAMu=BroHapG1AS3xB5SQaCX2XKu=-E2Ob9uW6LNuHvd=YohrDw@mail.gmail.com>
Bug-Reference-URL:	http://lists.gnu.org/archive/html/bug-bash/2019-02/msg00067.html

Bug-Description:

Running `exec' when job control was disabled, even temporarily, but after it
had been initialized, could leave the terminal in the wrong process group for
the executed process.

Patch (apply with `patch -p0'):

*** ../bash-5.0-patched/jobs.c	2018-12-06 11:44:34.000000000 -0500
--- b/jobs.c	2019-04-12 15:15:10.000000000 -0400
***************
*** 4838,4850 ****
  {
    if (job_control)
!     {
!       terminate_stopped_jobs ();
  
!       if (original_pgrp >= 0)
! 	give_terminal_to (original_pgrp, 1);
!     }
  
!   if (original_pgrp >= 0)
!     setpgid (0, original_pgrp);
  }
  
--- 4838,4848 ----
  {
    if (job_control)
!     terminate_stopped_jobs ();
  
!   if (original_pgrp >= 0 && terminal_pgrp != original_pgrp)
!     give_terminal_to (original_pgrp, 1);
  
!   if (original_pgrp >= 0 && setpgid (0, original_pgrp) == 0)
!     shell_pgrp = original_pgrp;
  }
  
*** ../bash-5.0/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 6
  
  #endif /* _PATCHLEVEL_H_ */
--- 26,30 ----
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 7
  
  #endif /* _PATCHLEVEL_H_ */