Re: [RFA] scope_breakpoint -> internal breakpoint

[Michael Snyder <msnyder at redhat dot com>]

Keith Seitz wrote:
> 
> Hi,
> 
> When a watchpoint is set on a local variable, GDB sets a breakpoint of
> type bp_watchpoint_scope to detect when the watchpoint is out of scope.
> 
> Right now, it does this using a "user-visible" breakpoint number (>0).
> This patch changes this so that this internal breakpoint is created as an
> internal breakpoint (<0). Section 5.1.2 of the user manual makes no
> mention of this breakpoint, so I am suggesting that we make it one of the
> optionally-displayed internal breakpoints.
> 
> I've run this through the testsuite and it introduces no new failures.
> 
> Keith

Good idea -- approved.

> 
> ChangeLog
> 2002-08-20  Keith Seitz  <keiths@redhat.com>
> 
>         * breakpoints.c (watch_command_1): Use internal breakpoint
>         when setting a watchpoint_scope breakpoint.
> 
> Patch
> Index: breakpoint.c
> ===================================================================
> RCS file: /cvs/src/src/gdb/breakpoint.c,v
> retrieving revision 1.80
> diff -p -r1.80 breakpoint.c
> *** breakpoint.c        17 Aug 2002 06:12:52 -0000      1.80
> --- breakpoint.c        20 Aug 2002 18:19:42 -0000
> *************** watch_command_1 (char *arg, int accessfl
> *** 5331,5346 ****
>         if (prev_frame)
>         {
>           struct breakpoint *scope_breakpoint;
> !         struct symtab_and_line scope_sal;
> !
> !         INIT_SAL (&scope_sal);        /* initialize to zeroes */
> !         scope_sal.pc = get_frame_pc (prev_frame);
> !         scope_sal.section = find_pc_overlay (scope_sal.pc);
> !
> !         scope_breakpoint = set_raw_breakpoint (scope_sal,
> !                                                bp_watchpoint_scope);
> !         set_breakpoint_count (breakpoint_count + 1);
> !         scope_breakpoint->number = breakpoint_count;
> 
>           scope_breakpoint->enable_state = bp_enabled;
> 
> --- 5331,5338 ----
>         if (prev_frame)
>         {
>           struct breakpoint *scope_breakpoint;
> !         scope_breakpoint = create_internal_breakpoint (get_frame_pc (prev_frame),
> !                                                        bp_watchpoint_scope);
> 
>           scope_breakpoint->enable_state = bp_enabled;
>