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diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 3b5f9aab48..4163c869af 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,86 @@
+2020-01-10  Pedro Alves  <palves@redhat.com>
+
+	* remote.c (remote_target::remote_add_inferior): Don't bind a
+	process to the current inferior if the current inferior is already
+	bound to a process.
+
+2020-01-10  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>
+	    Pedro Alves	 <palves@redhat.com>
+
+	* remote.c (remote_target::remote_parse_stop_reply) <W/X packets>:
+	If no process is specified, return null_ptid instead of
+	inferior_ptid.
+	(remote_target::wait_as): Handle TARGET_WAITKIND_EXITED /
+	TARGET_WAITKIND_SIGNALLED with no pid.
+
+2020-01-10  Pedro Alves  <palves@redhat.com>
+
+	* remote.c (first_remote_resumed_thread): New.
+	(remote_target::wait_as): Use it as default event_ptid instead of
+	inferior_ptid.
+
+2020-01-10  Pedro Alves  <palves@redhat.com>
+
+	* infrun.c (handle_no_resumed): Use all_non_exited_inferiors.
+
+2020-01-10  Pedro Alves  <palves@redhat.com>
+
+	* tracefile-tfile.c (tfile_target::close): Assert that trace_fd is
+	not -1.
+
+2020-01-10  Pedro Alves  <palves@redhat.com>
+
+	* break-catch-sig.c (signal_catchpoint_print_it): Don't pass a
+	ptid to get_last_target_status.
+	* break-catch-syscall.c (print_it_catch_syscall): Don't pass a
+	ptid to get_last_target_status.
+	* infcmd.c (continue_command): Don't pass a target_waitstatus to
+	get_last_target_status.
+	(info_program_command): Don't pass a target_waitstatus to
+	get_last_target_status.
+	* infrun.c (init_wait_for_inferior): Use
+	nullify_last_target_wait_ptid.
+	(get_last_target_status): Handle nullptr arguments.
+	(nullify_last_target_wait_ptid): Clear target_last_waitstatus.
+	(print_stop_event): Don't pass a ptid to get_last_target_status.
+	(normal_stop): Don't pass a ptid to get_last_target_status.
+	* infrun.h (get_last_target_status, set_last_target_status): Move
+	comments here and update.
+	(nullify_last_target_wait_ptid): Declare.
+	* linux-fork.c (fork_load_infrun_state): Remove local extern
+	declaration of nullify_last_target_wait_ptid.
+	* linux-nat.c (get_detach_signal): Don't pass a target_waitstatus
+	to get_last_target_status.
+
+2020-01-10  Pedro Alves  <palves@redhat.com>
+
+	* gdbthread.h (scoped_restore_current_thread)
+	<dont_restore, restore, m_dont_restore>: Declare.
+	* thread.c (thread_alive): Add assertion.  Return bool.
+	(switch_to_thread_if_alive): New.
+	(prune_threads): Switch inferior/thread.
+	(print_thread_info_1): Switch thread before calling target methods.
+	(scoped_restore_current_thread::restore): New, factored out from
+	...
+	(scoped_restore_current_thread::~scoped_restore_current_thread):
+	... this.
+	(scoped_restore_current_thread::scoped_restore_current_thread):
+	Add assertion.
+	(thread_apply_all_command, thread_select): Use
+	switch_to_thread_if_alive.
+	* infrun.c (proceed, restart_threads, handle_signal_stop)
+	(switch_back_to_stepped_thread): Switch current thread before
+	calling target methods.
+
+2020-01-10  Pedro Alves <palves@redhat.com>
+
+	* inferior.c (switch_to_inferior_no_thread): New function,
+	factored out from ...
+	(inferior_command): ... here.
+	* inferior.h (switch_to_inferior_no_thread): Declare.
+	* mi/mi-main.c (run_one_inferior): Use
+	switch_to_inferior_no_thread.
+
 2020-01-10  Pedro Alves  <palves@redhat.com>
 
 	* infcmd.c (kill_command): Remove dead code.