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.

1 files changed, 17 insertions, 1 deletions

diff --git a/gdb/breakpoint.h b/gdb/breakpoint.h
index 0fb6830ab06..a044c6b3667 100644
--- a/gdb/breakpoint.h
+++ b/gdb/breakpoint.h
@@ -57,6 +57,13 @@ enum bptype
     bp_longjmp,			/* secret breakpoint to find longjmp() */
     bp_longjmp_resume,		/* secret breakpoint to escape longjmp() */
 
+    /* An internal breakpoint that is installed on the unwinder's
+       debug hook.  */
+    bp_exception,
+    /* An internal breakpoint that is set at the point where an
+       exception will land.  */
+    bp_exception_resume,
+
     /* Used by wait_for_inferior for stepping over subroutine calls, for
        stepping over signal handlers, and for skipping prologues.  */
     bp_step_resume,
@@ -126,6 +133,9 @@ enum bptype
     /* Master copies of std::terminate breakpoints.  */
     bp_std_terminate_master,
 
+    /* Like bp_longjmp_master, but for exceptions.  */
+    bp_exception_master,
+
     bp_catchpoint,
 
     bp_tracepoint,
@@ -665,6 +675,11 @@ struct bpstat_what
        continuing from a call dummy without popping the frame is not a
        useful one).  */
     enum stop_stack_kind call_dummy;
+
+    /* Used for BPSTAT_WHAT_SET_LONGJMP_RESUME and
+       BPSTAT_WHAT_CLEAR_LONGJMP_RESUME.  True if we are handling a
+       longjmp, false if we are handling an exception.  */
+    int is_longjmp;
   };
 
 /* The possible return values for print_bpstat, print_it_normal,
@@ -925,7 +940,8 @@ extern int detach_breakpoints (int);
    this PSPACE anymore.  */
 extern void breakpoint_program_space_exit (struct program_space *pspace);
 
-extern void set_longjmp_breakpoint (int thread);
+extern void set_longjmp_breakpoint (struct thread_info *tp,
+				    struct frame_id frame);
 extern void delete_longjmp_breakpoint (int thread);
 
 extern void enable_overlay_breakpoints (void);