gdb

gdb
	PR c++/9593:
	* thread.c (clear_thread_inferior_resources): Call
	delete_longjmp_breakpoint.
	* infrun.c (handle_inferior_event): Handle exception breakpoints.
	(handle_inferior_event): Likewise.
	(insert_exception_resume_breakpoint): New function.
	(check_exception_resume): Likewise.
	* inferior.h (delete_longjmp_breakpoint_cleanup): Declare.
	* infcmd.c (delete_longjmp_breakpoint_cleanup): No longer static.
	(step_1): Set thread's initiating frame.
	(until_next_continuation): New function.
	(until_next_command): Support exception breakpoints.
	(finish_command_continuation): Delete longjmp breakpoint.
	(finish_forward): Support exception breakpoints.
	* gdbthread.h (struct thread_info) <initiating_frame>: New field.
	* breakpoint.h (enum bptype) <bp_exception, bp_exception_resume,
	bp_exception_master>: New constants.
	(struct bpstat_what) <is_longjmp>: New field.
	(set_longjmp_breakpoint): Update.
	* breakpoint.c (create_exception_master_breakpoint): New function.
	(update_breakpoints_after_exec): Handle bp_exception_master.  Call
	create_exception_master_breakpoint.
	(print_it_typical): Handle bp_exception_master, bp_exception.
	(bpstat_stop_status): Handle bp_exception_master.
	(bpstat_what): Handle bp_exception_master, bp_exception,
	bp_exception_resume.
	(bptype_string): Likewise.
	(print_one_breakpoint_location): Likewise.
	(allocate_bp_location): Likewise.
	(set_longjmp_breakpoint): Handle exception breakpoints.  Change
	interface.
	(delete_longjmp_breakpoint): Handle exception breakpoints.
	(mention): Likewise.
	(struct until_break_command_continuation_args) <thread_num>: New
	field.
	(until_break_command_continuation): Call
	delete_longjmp_breakpoint.
	(until_break_command): Support exception breakpoints.
	(delete_command): Likewise.
	(breakpoint_re_set_one): Likewise.
	(breakpoint_re_set): Likewise.
gdb/testuite
	* gdb.java/jnpe.java: New file.
	* gdb.java/jnpe.exp: New file.
	* gdb.cp/nextoverthrow.exp: New file.
	* gdb.cp/nextoverthrow.cc: New file.