package/bash: add upstream patches up to patch level 23

We unfortunately cannot easily download these because of the file names (not
ending in patch) and patch format (p0), so convert to p1 format and include
in package/bash with the following script:

j=1; for i in 19 20 21 22 23; do
    file=$(printf '%04d-patch44-0%d.patch' $j $i)
    cat > $file << EOF
>From https://ftp.gnu.org/gnu/bash/bash-4.4-patches/bash44-0$i

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

EOF
    curl https://ftp.gnu.org/gnu/bash/bash-4.4-patches/bash44-0$i | \
        sed -e 's|^\*\*\* \.\./|*** |' -e 's|^--- |--- b/|' >> $file

    j=$(( j + 1 ))
done

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 87a8f5f51c63fb9c9ff2cb907fd86f5ad0525617)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/bash/0001-bash44-019.patch

@@ -0,0 +1,54 @@
+From https://ftp.gnu.org/gnu/bash/bash-4.4-patches/bash44-019
+
+Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
+
+			     BASH PATCH REPORT
+			     =================
+
+Bash-Release:	4.4
+Patch-ID:	bash44-019
+
+Bug-Reported-by:	Kieran Grant <kieran.thehacker.grant@gmail.com>
+Bug-Reference-ID:	<ec9071ae-efb1-9e09-5d03-e905daf2835c@gmail.com>
+Bug-Reference-URL:	http://lists.gnu.org/archive/html/bug-bash/2018-02/msg00002.html
+
+Bug-Description:
+
+With certain values for PS1, especially those that wrap onto three or more
+lines, readline will miscalculate the number of invisible characters,
+leading to crashes and core dumps.
+
+Patch (apply with `patch -p0'):
+
+*** bash-4.4.18/lib/readline/display.c	2016-07-28 14:49:33.000000000 -0400
+--- b/lib/readline/display.c	2018-02-03 19:19:35.000000000 -0500
+***************
+*** 772,776 ****
+        wadjust = (newlines == 0)
+  		  ? prompt_invis_chars_first_line
+! 		  : ((newlines == prompt_lines_estimate) ? wrap_offset : prompt_invis_chars_first_line);
+  
+        /* fix from Darin Johnson <darin@acuson.com> for prompt string with
+--- b/788,794 ----
+        wadjust = (newlines == 0)
+  		  ? prompt_invis_chars_first_line
+! 		  : ((newlines == prompt_lines_estimate)
+! 		  	? (wrap_offset - prompt_invis_chars_first_line)
+! 		  	: 0);
+  
+        /* fix from Darin Johnson <darin@acuson.com> for prompt string with
+*** 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 18
+  
+  #endif /* _PATCHLEVEL_H_ */
+--- b/26,30 ----
+     looks for to find the patch level (for the sccs version string). */
+  
+! #define PATCHLEVEL 19
+  
+  #endif /* _PATCHLEVEL_H_ */

package/bash/0002-bash44-020.patch

@@ -0,0 +1,181 @@
+From https://ftp.gnu.org/gnu/bash/bash-4.4-patches/bash44-020
+
+Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
+
+			     BASH PATCH REPORT
+			     =================
+
+Bash-Release:	4.4
+Patch-ID:	bash44-020
+
+Bug-Reported-by:	Graham Northup <northug@clarkson.edu>
+Bug-Reference-ID:	<537530c3-61f0-349b-9de6-fa4e2487f428@clarkson.edu>
+Bug-Reference-URL:	http://lists.gnu.org/archive/html/bug-bash/2017-02/msg00025.html
+
+Bug-Description:
+
+In circumstances involving long-running scripts that create and reap many
+processes, it is possible for the hash table bash uses to store exit
+statuses from asynchronous processes to develop loops. This patch fixes
+the loop causes and adds code to detect any future loops.
+
+Patch (apply with `patch -p0'):
+
+*** bash-4.4-patched/jobs.c	2016-11-11 13:42:55.000000000 -0500
+--- b/jobs.c	2017-02-22 15:16:28.000000000 -0500
+***************
+*** 813,818 ****
+    struct pidstat *ps;
+  
+!   bucket = pshash_getbucket (pid);
+!   psi = bgp_getindex ();
+    ps = &bgpids.storage[psi];
+  
+--- b/796,815 ----
+    struct pidstat *ps;
+  
+!   /* bucket == existing chain of pids hashing to same value
+!      psi = where were going to put this pid/status */
+! 
+!   bucket = pshash_getbucket (pid);	/* index into pidstat_table */
+!   psi = bgp_getindex ();		/* bgpids.head, index into storage */
+! 
+!   /* XXX - what if psi == *bucket? */
+!   if (psi == *bucket)
+!     {
+! #ifdef DEBUG
+!       internal_warning ("hashed pid %d (pid %d) collides with bgpids.head, skipping", psi, pid);
+! #endif
+!       bgpids.storage[psi].pid = NO_PID;		/* make sure */
+!       psi = bgp_getindex ();			/* skip to next one */
+!     }
+! 
+    ps = &bgpids.storage[psi];
+  
+***************
+*** 842,845 ****
+--- b/839,843 ----
+  {
+    struct pidstat *ps;
++   ps_index_t *bucket;
+  
+    ps = &bgpids.storage[psi];
+***************
+*** 847,856 ****
+      return;
+  
+!   if (ps->bucket_next != NO_PID)
+      bgpids.storage[ps->bucket_next].bucket_prev = ps->bucket_prev;
+!   if (ps->bucket_prev != NO_PID)
+      bgpids.storage[ps->bucket_prev].bucket_next = ps->bucket_next;
+    else
+!     *(pshash_getbucket (ps->pid)) = ps->bucket_next;
+  }
+  
+--- b/845,861 ----
+      return;
+  
+!   if (ps->bucket_next != NO_PIDSTAT)
+      bgpids.storage[ps->bucket_next].bucket_prev = ps->bucket_prev;
+!   if (ps->bucket_prev != NO_PIDSTAT)
+      bgpids.storage[ps->bucket_prev].bucket_next = ps->bucket_next;
+    else
+!     {
+!       bucket = pshash_getbucket (ps->pid);
+!       *bucket = ps->bucket_next;	/* deleting chain head in hash table */
+!     }
+! 
+!   /* clear out this cell, just in case */
+!   ps->pid = NO_PID;
+!   ps->bucket_next = ps->bucket_prev = NO_PIDSTAT;
+  }
+  
+***************
+*** 859,863 ****
+       pid_t pid;
+  {
+!   ps_index_t psi;
+  
+    if (bgpids.storage == 0 || bgpids.nalloc == 0 || bgpids.npid == 0)
+--- b/864,868 ----
+       pid_t pid;
+  {
+!   ps_index_t psi, orig_psi;
+  
+    if (bgpids.storage == 0 || bgpids.nalloc == 0 || bgpids.npid == 0)
+***************
+*** 865,871 ****
+  
+    /* Search chain using hash to find bucket in pidstat_table */
+!   for (psi = *(pshash_getbucket (pid)); psi != NO_PIDSTAT; psi = bgpids.storage[psi].bucket_next)
+!     if (bgpids.storage[psi].pid == pid)
+!       break;
+  
+    if (psi == NO_PIDSTAT)
+--- b/870,883 ----
+  
+    /* Search chain using hash to find bucket in pidstat_table */
+!   for (orig_psi = psi = *(pshash_getbucket (pid)); psi != NO_PIDSTAT; psi = bgpids.storage[psi].bucket_next)
+!     {
+!       if (bgpids.storage[psi].pid == pid)
+! 	break;
+!       if (orig_psi == bgpids.storage[psi].bucket_next)	/* catch reported bug */
+! 	{
+! 	  internal_warning ("bgp_delete: LOOP: psi (%d) == storage[psi].bucket_next", psi);
+! 	  return 0;
+! 	}
+!     }
+  
+    if (psi == NO_PIDSTAT)
+***************
+*** 905,909 ****
+       pid_t pid;
+  {
+!   ps_index_t psi;
+  
+    if (bgpids.storage == 0 || bgpids.nalloc == 0 || bgpids.npid == 0)
+--- b/917,921 ----
+       pid_t pid;
+  {
+!   ps_index_t psi, orig_psi;
+  
+    if (bgpids.storage == 0 || bgpids.nalloc == 0 || bgpids.npid == 0)
+***************
+*** 911,917 ****
+  
+    /* Search chain using hash to find bucket in pidstat_table */
+!   for (psi = *(pshash_getbucket (pid)); psi != NO_PIDSTAT; psi = bgpids.storage[psi].bucket_next)
+!     if (bgpids.storage[psi].pid == pid)
+!       return (bgpids.storage[psi].status);
+  
+    return -1;
+--- b/923,936 ----
+  
+    /* Search chain using hash to find bucket in pidstat_table */
+!   for (orig_psi = psi = *(pshash_getbucket (pid)); psi != NO_PIDSTAT; psi = bgpids.storage[psi].bucket_next)
+!     {
+!       if (bgpids.storage[psi].pid == pid)
+! 	return (bgpids.storage[psi].status);
+!       if (orig_psi == bgpids.storage[psi].bucket_next)	/* catch reported bug */
+! 	{
+! 	  internal_warning ("bgp_search: LOOP: psi (%d) == storage[psi].bucket_next", psi);
+! 	  return -1;
+! 	}
+!     }
+  
+    return -1;
+*** 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 19
+  
+  #endif /* _PATCHLEVEL_H_ */
+--- b/26,30 ----
+     looks for to find the patch level (for the sccs version string). */
+  
+! #define PATCHLEVEL 20
+  
+  #endif /* _PATCHLEVEL_H_ */

package/bash/0003-bash44-021.patch

@@ -0,0 +1,61 @@
+From https://ftp.gnu.org/gnu/bash/bash-4.4-patches/bash44-021
+
+Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
+
+			     BASH PATCH REPORT
+			     =================
+
+Bash-Release:	4.4
+Patch-ID:	bash44-021
+
+Bug-Reported-by:	werner@suse.de
+Bug-Reference-ID:	<201803281402.w2SE2VOa000476@noether.suse.de>
+Bug-Reference-URL:	http://lists.gnu.org/archive/html/bug-bash/2018-03/msg00196.html
+
+Bug-Description:
+
+A SIGINT received inside a SIGINT trap handler can possibly cause the
+shell to loop.
+
+Patch (apply with `patch -p0'):
+
+*** bash-20180329/jobs.c	2018-02-11 18:07:22.000000000 -0500
+--- b/jobs.c	2018-04-02 14:24:21.000000000 -0400
+***************
+*** 2690,2694 ****
+    if (job_control == 0 || (subshell_environment&SUBSHELL_COMSUB))
+      {
+!       old_sigint_handler = set_signal_handler (SIGINT, wait_sigint_handler);
+        waiting_for_child = 0;
+        if (old_sigint_handler == SIG_IGN)
+--- b/2690,2704 ----
+    if (job_control == 0 || (subshell_environment&SUBSHELL_COMSUB))
+      {
+!       SigHandler *temp_sigint_handler;
+! 
+!       temp_sigint_handler = set_signal_handler (SIGINT, wait_sigint_handler);
+!       if (temp_sigint_handler == wait_sigint_handler)
+!         {
+! #if defined (DEBUG)
+! 	  internal_warning ("wait_for: recursively setting old_sigint_handler to wait_sigint_handler: running_trap = %d", running_trap);
+! #endif
+!         }
+!       else
+! 	old_sigint_handler = temp_sigint_handler;
+        waiting_for_child = 0;
+        if (old_sigint_handler == SIG_IGN)
+*** 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 20
+  
+  #endif /* _PATCHLEVEL_H_ */
+--- b/26,30 ----
+     looks for to find the patch level (for the sccs version string). */
+  
+! #define PATCHLEVEL 21
+  
+  #endif /* _PATCHLEVEL_H_ */

package/bash/0004-bash44-022.patch

@@ -0,0 +1,65 @@
+From https://ftp.gnu.org/gnu/bash/bash-4.4-patches/bash44-022
+
+Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
+
+			     BASH PATCH REPORT
+			     =================
+
+Bash-Release:	4.4
+Patch-ID:	bash44-022
+
+Bug-Reported-by:	Nuzhna Pomoshch <nuzhna_pomoshch@yahoo.com>
+Bug-Reference-ID:	<1317167476.1492079.1495999776464@mail.yahoo.com>
+Bug-Reference-URL:	https://lists.gnu.org/archive/html/bug-readline/2017-05/msg00005.html
+
+Bug-Description:
+
+There are cases where a failing readline command (e.g., delete-char at the end
+of a line) can cause a multi-character key sequence to `back up' and attempt
+to re-read some of the characters in the sequence.
+
+Patch (apply with `patch -p0'):
+
+*** bash-4.4-patched/lib/readline/readline.c	2016-04-20 15:53:52.000000000 -0400
+--- b/lib/readline/readline.c	2018-05-26 17:19:00.000000000 -0400
+***************
+*** 1058,1062 ****
+  	r = _rl_dispatch (ANYOTHERKEY, m);
+      }
+!   else if (r && map[ANYOTHERKEY].function)
+      {
+        /* We didn't match (r is probably -1), so return something to
+--- b/1056,1060 ----
+  	r = _rl_dispatch (ANYOTHERKEY, m);
+      }
+!   else if (r < 0 && map[ANYOTHERKEY].function)
+      {
+        /* We didn't match (r is probably -1), so return something to
+***************
+*** 1070,1074 ****
+        return -2;
+      }
+!   else if (r && got_subseq)
+      {
+        /* OK, back up the chain. */
+--- b/1068,1072 ----
+        return -2;
+      }
+!   else if (r < 0 && got_subseq)		/* XXX */
+      {
+        /* OK, back up the chain. */
+*** 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 21
+  
+  #endif /* _PATCHLEVEL_H_ */
+--- b/26,30 ----
+     looks for to find the patch level (for the sccs version string). */
+  
+! #define PATCHLEVEL 22
+  
+  #endif /* _PATCHLEVEL_H_ */

package/bash/0005-bash44-023.patch

@@ -0,0 +1,56 @@
+From https://ftp.gnu.org/gnu/bash/bash-4.4-patches/bash44-023
+
+Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
+
+			     BASH PATCH REPORT
+			     =================
+
+Bash-Release:	4.4
+Patch-ID:	bash44-023
+
+Bug-Reported-by:	Martijn Dekker <martijn@inlv.org>
+Bug-Reference-ID:	<5326d6b9-2625-1d32-3e6e-ad1d15462c09@inlv.org>
+Bug-Reference-URL:	http://lists.gnu.org/archive/html/bug-bash/2016-11/msg00041.html
+
+Bug-Description:
+
+When sourcing a file from an interactive shell, setting the SIGINT handler
+to the default and typing ^C will cause the shell to exit.
+
+Patch (apply with `patch -p0'):
+
+*** bash-4.4-patched/builtins/trap.def	2016-01-25 13:32:38.000000000 -0500
+--- b/builtins/trap.def	2016-11-06 12:04:35.000000000 -0500
+***************
+*** 99,102 ****
+--- b/99,103 ----
+  
+  extern int posixly_correct, subshell_environment;
++ extern int sourcelevel, running_trap;
+  
+  int
+***************
+*** 213,216 ****
+--- b/214,220 ----
+  			if (interactive)
+  			  set_signal_handler (SIGINT, sigint_sighandler);
++ 			/* special cases for interactive == 0 */
++ 			else if (interactive_shell && (sourcelevel||running_trap))
++ 			  set_signal_handler (SIGINT, sigint_sighandler);
+  			else
+  			  set_signal_handler (SIGINT, termsig_sighandler);
+*** 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 22
+  
+  #endif /* _PATCHLEVEL_H_ */
+--- b/26,30 ----
+     looks for to find the patch level (for the sccs version string). */
+  
+! #define PATCHLEVEL 23
+  
+  #endif /* _PATCHLEVEL_H_ */