PR gdb/11568 is about thread-specific breakpoints being left behind
when the corresponding thread exits.
Currently:
(gdb) b start thread 2
Breakpoint 3 at 0x400614: file thread-specific-bp.c, line 23.
(gdb) b end
Breakpoint 4 at 0x40061f: file thread-specific-bp.c, line 29.
(gdb) c
Continuing.
[Thread 0x7ffff7fcb700 (LWP 14925) exited]
[Switching to Thread 0x7ffff7fcc740 (LWP 14921)]
Breakpoint 4, end () at thread-specific-bp.c:29
29 }
(gdb) info threads
Id Target Id Frame
* 1 Thread 0x7ffff7fcc740 (LWP 14921) "thread-specific" end () at thread-specific-bp.c:29
(gdb) info breakpoints
Num Type Disp Enb Address What
2 breakpoint keep y 0x0000000000400614 in start at thread-specific-bp.c:23
breakpoint already hit 1 time
3 breakpoint keep y 0x0000000000400614 in start at thread-specific-bp.c:23 thread 2
stop only in thread 2
4 breakpoint keep y 0x000000000040061f in end at thread-specific-bp.c:29
breakpoint already hit 1 time
Note that the thread-specific breakpoint 3 stayed around, even though
thread 2 is gone.
There's no way that breakpoint can trigger again (*), so the PR argues
that the breakpoint should just be removed, like local watchpoints.
I'm ambivalent on this -- it could be reasonable to disable the
breakpoint (kind of like breakpoint in shared library code when the
DSO is unloaded), so the user could still use it as visual template
for creating other breakpoints (copy/paste command lists, etc.), or we
could have a way to change to which thread a breakpoint applies. But,
several people pushed this direction, and I don't plan on arguing...
(*) - actually, there is ... thread numbers are reset on "run", so
the user could do "break foo thread 2", "run", and expect the
breakpoint to hit again on the second thread. But given gdb's thread
numbering can't really be stable, that'd only work sufficiently well
for thread 1, so we'd better call it unsupported.
So with the patch, whenever a thread is deleted from GDB's list, GDB
goes through the thread-specific breakpoints and deletes corresponding
breakpoints. Since this is user-visible, GDB prints out:
Thread-specific breakpoint 3 deleted - thread 2 is gone.
And of course, we end up with:
(gdb) info breakpoints
Num Type Disp Enb Address What
2 breakpoint keep y 0x0000000000400614 in start at thread-specific-bp.c:23
breakpoint already hit 1 time
4 breakpoint keep y 0x000000000040061f in end at thread-specific-bp.c:29
breakpoint already hit 1 time
2013-09-17 Muhammad Waqas <mwaqas@codesourcery.com>
Pedro Alves <palves@redhat.com>
PR gdb/11568
* breakpoint.c (remove_threaded_breakpoints): New function.
(_initialize_breakpoint): Attach remove_threaded_breakpoints
as thread_exit observer.
2013-09-17 Muhammad Waqas <mwaqas@codesourccery.com>
Jan Kratochvil <jan.kartochvil@redhat.com>
Pedro Alves <palves@redhat.com>
PR gdb/11568
* gdb.thread/thread-specific-bp.c: New file.
* gdb.thread/thread-specific-bp.exp: New file.
PR gdb/15501
* breakpoint.c (enable_command, disable_command): Iterate over
all specified breakpoint locations.
2013-07-12 Muhammad Waqas <mwaqas@codesourccery.com>
PR gdb/15501
* gdb.base/ena-dis-br.exp: Add test to verify
enable/disable commands work correctly with
multiple arguments that include multiple locations.
Most commands in GDB show the tilde-expanded filename in user visible
output. This makes "save breakpoints" behave the same.
Before:
(gdb) save breakpoints ~/a/b
Unable to open file '~/a/b' for saving (No such file or directory)
After:
(gdb) save breakpoints ~/a/b
Unable to open file '/home/pedro/a/b' for saving (No such file or directory)
Tested on x86_64 Fedora 17.
gdb/
2013-08-09 Pedro Alves <palves@redhat.com>
* breakpoint.c (save_breakpoints): Show tilde-expanded filename in
error message.
This patch fixes PR symtab/15719.
The bug is that "watch -location" crashes on a certain expression.
The problem is that fetch_subexp_value is catching an exception.
For ordinary watchpoints this is ok; but for location watchpoints,
it is better for the exception to propagate.
Built and regtested on x86-64 Fedora 18.
New test case included.
PR symtab/15719:
* breakpoint.c (update_watchpoint, watchpoint_check)
(watch_command_1): Update.
* eval.c (fetch_subexp_value): Add "preserve_errors"
parameter.
* ppc-linux-nat.c (check_condition): Update.
* value.h (fetch_subexp_value): Update.
* gdb.base/watchpoint.c (struct foo5): New.
(nullptr): New global.
* gdb.base/watchpoint.exp (test_watch_location): Add test.
* breakpoint.c (create_longjmp_master_breakpoint): Check if probe
interface can evaluate arguments. Fallback to the old mode if it
cannot.
(create_exception_master_breakpoint): Likewise.
* elfread.c (elf_can_evaluate_probe_arguments): New function.
(struct sym_probe_fns elf_probe_fns): Export function above to the
probe interface.
* probe.c (can_evaluate_probe_arguments): New function.
* probe.h (struct probe_ops) <can_evaluate_probe_arguments>: New
function pointer.
(can_evaluate_probe_arguments): New function prototype.
* solib-svr4.c (svr4_create_solib_event_breakpoints): Check if
probe interface can evaluate arguments. Fallback to the old mode
if it cannot.
* stap-probe.c (stap_get_probe_argument_count): Check if probe
interface can evaluate arguments. Warning the user if it cannot.
(stap_can_evaluate_probe_arguments): New function.
(struct probe_ops stap_probe_ops): Export function above to the
probe interface.
* symfile.h (struct sym_probe_fns) <can_evaluate_probe_arguments>:
New function pointer.
2013-06-26 Pedro Alves <pedro@codesourcery.com>
Yao Qi <yao@codesourcery.com>
* ctf.c (ctf_traceframe_info): Push trace state variables
present in the trace data into the traceframe info object.
* breakpoint.c (DEF_VEC_I): Remove.
* common/filestuff.c (DEF_VEC_I): Likewise.
* dwarf2loc.c (DEF_VEC_I): Likewise.
* mi/mi-main.c (DEF_VEC_I): Likewise.
* common/gdb_vecs.h (DEF_VEC_I): Define vector for int.
* features/traceframe-info.dtd: Add tvar element and its
attributes.
* tracepoint.c (free_traceframe_info): Free vector 'tvars'.
(build_traceframe_info): Push trace state variables present in the
trace data into the traceframe info object.
(traceframe_info_start_tvar): New function.
(tvar_attributes): New.
(traceframe_info_children): Add "tvar" element.
* tracepoint.h (struct traceframe_info) <tvars>: New field.
* NEWS: Mention the change in GDB and GDBserver.
gdb/doc:
2013-06-26 Pedro Alves <pedro@codesourcery.com>
* gdb.texinfo (Traceframe Info Format): Document tvar element and
its attributes.
gdb/gdbserver:
2013-06-26 Pedro Alves <pedro@codesourcery.com>
* tracepoint.c (build_traceframe_info_xml): Output trace state
variables present in the trace buffer.
This fixes PR cli/15603.
The bug here is that when a software watchpoint is being used, gdb
will stop responding to C-c. This is a regression caused by the
"catch signal" patch.
The problem is that software watchpoints always end up on the bpstat
list. However, this makes bpstat_explains_signal return
BPSTAT_SIGNAL_HIDE, causing infrun to think that the signal is not a
"random signal".
The fix is to change bpstat_explains_signal to handle this better. I
chose to do it in a "clean API" way, by passing the signal value to
bpstat_explains_signal and then adding an explains_signal method for
watchpoints, which handles the specifics.
Built and regtested on x86-64 Fedora 18.
New test case included.
* break-catch-sig.c (signal_catchpoint_explains_signal): Add 'sig'
argument.
* breakpoint.c (bpstat_explains_signal): Add 'sig' argument.
Special case signals other than GDB_SIGNAL_TRAP.
(explains_signal_watchpoint): New function.
(base_breakpoint_explains_signal): Add 'sig' argument.
(initialize_breakpoint_ops): Set 'explains_signal' method for
watchpoints.
* breakpoint.h (struct breakpoint_ops) <explains_signal>: Add
signal argument.
(bpstat_explains_signal): Likewise.
* infrun.c (handle_syscall_event, handle_inferior_event): Update.
* gdb.base/random-signal.c: New file.
* gdb.base/random-signal.exp: New file.
* breakpoint.h (handle_solib_event): Moved function declaration
to solib.h.
* breakpoint.c (handle_solib_event): Moved function to solib.c.
(bpstat_stop_status): Pass new argument to handle_solib_event.
* solib.h (update_solib_breakpoints): New function declaration.
(handle_solib_event): Moved function declaration from
breakpoint.h.
* solib.c (update_solib_breakpoints): New function.
(handle_solib_event): Moved function from breakpoint.c.
Updated to call solib_ops->handle_event if not NULL.
* solist.h (target_so_ops): New fields "update_breakpoints" and
"handle_event".
* infrun.c (set_stop_on_solib_events): New function.
(_initialize_infrun): Use the above for "set
stop-on-solib-events".
(handle_inferior_event): Pass new argument to handle_solib_event.
* solib-svr4.c (probe.h): New include.
(svr4_free_library_list): New forward declaration.
(probe_action): New enum.
(probe_info): New struct.
(probe_info): New static variable.
(NUM_PROBES): New definition.
(svr4_info): New fields "using_xfer", "probes_table" and
"solib_list".
(free_probes_table): New function.
(free_solib_list): New function.
(svr4_pspace_data_cleanup): Free probes table and solib list.
(svr4_copy_library_list): New function.
(svr4_current_sos_via_xfer_libraries): New parameter "annex".
(svr4_read_so_list): New parameter "prev_lm".
(svr4_current_sos_direct): Renamed from "svr4_current_sos".
(svr4_current_sos): New function.
(probe_and_action): New struct.
(hash_probe_and_action): New function.
(equal_probe_and_action): Likewise.
(register_solib_event_probe): Likewise.
(solib_event_probe_at): Likewise.
(solib_event_probe_action): Likewise.
(solist_update_full): Likewise.
(solist_update_incremental): Likewise.
(disable_probes_interface_cleanup): Likewise.
(svr4_handle_solib_event): Likewise.
(svr4_update_solib_event_breakpoint): Likewise.
(svr4_update_solib_event_breakpoints): Likewise.
(svr4_create_solib_event_breakpoints): Likewise.
(enable_break): Free probes table before creating breakpoints.
Use svr4_create_solib_event_breakpoints to create breakpoints.
(svr4_solib_create_inferior_hook): Free the solib list.
(_initialize_svr4_solib): Initialise
svr4_so_ops.handle_solib_event and svr4_so_ops.update_breakpoints.
First, output_thread_groups leaks a cleanup along one return path.
Second, parse_cmd_to_aexpr could return without running its cleanups,
if there was an exception in a TRY_CATCH.
* breakpoint.c (output_thread_groups, parse_cmd_to_aexpr): Call
do_cleanups earlier.
2013-05-07 Sergio Durigan Junior <sergiodj@redhat.com>
PR breakpoints/15413:
* breakpoint.c (condition_completer): Simplify the code to
disconsider multiple locations of breakpoints when completing the
"condition" command.
gdb/testsuite/
2013-05-07 Sergio Durigan Junior <sergiodj@redhat.com>
PR breakpoints/15413:
* gdb.base/pending.exp: Add test for completion of the "condition"
command for pending breakpoints.
* gdb.linespec/linespec.ex: Add test for completion of the
"condition" command when dealing with multiple locations.
PR gdb/15165
* breakpoint.c (dprintf_print_recreate): New.
(save_breakpoints): Let it not save dprintf commands.
(initialize_breakpoint_ops): Set dprintf_print_recreate.
2013-04-23 Hui Zhu <hui@codesourcery.com>
PR gdb/15165
* gdb.base/save-bp.exp: Add test for dprintf.
If !PARSE_CONDITION_AND_THREAD, then ARG is just the location, nothing
else. The fact that the describing comment of create_breakpoint
doesn't mention this just looks like an oversight of when extra_string
was added. "parse_condition_and_thread" has been a misnomer ever
since extra_string was added -- better rename it avoid more confusion.
This makes it "parse_arg", as that'll remain stable even if/when more
explicit parameters are added.
gdb/
2013-04-08 Pedro Alves <palves@redhat.com>
Keith Seitz <keiths@redhat.com>
* breakpoint.c (create_breakpoint): Rename
"parse_condition_and_thread" parameter to "parse_arg". Update
describing comment. If !PARSE_ARG, then error out if ARG is not
the empty string after extracting the location.
* breakpoint.h (create_breakpoint): Rename
"parse_condition_and_thread" parameter to "parse_arg".
gdb/testsuite/
2013-04-08 Pedro Alves <palves@redhat.com>
* gdb.mi/mi-break.exp (test_error): Add tests with garbage after
the location.
If a tracepoint's actions list includes a while-stepping action, and
then the actions are changed to a list without any while-stepping
action, the tracepoint's step_count will be left with a stale value.
For example:
(gdb) trace subr
Tracepoint 1 at 0x4004d9: file ../../../src/gdb/testsuite//actions-changed.c, line 31.
(gdb) actions
Enter actions for tracepoint 1, one per line.
End with a line saying just "end".
>collect $reg
>end
(gdb) set debug remote 1
(gdb) tstart
Sending packet: $QTinit#59...Packet received: OK
Sending packet: $QTDP:1:00000000004004d9:E:0:0-#a3...Packet received: OK
Sending packet: $QTDP👎00000000004004d9:R03FFFFFFFFFFFFFFFFFF#2b...Packet received: OK
(gdb) tstop
Sending packet: $QTStop#4b...Packet received: OK
Sending packet: $QTNotes:#e8...Packet received: OK
(gdb) actions
Enter actions for tracepoint 1, one per line.
End with a line saying just "end".
>collect $reg
>while-stepping 1
>collect $reg
>end
>end
(gdb) tstart
Sending packet: $QTinit#59...Packet received: OK
Sending packet: $QTDP:1:00000000004004d9:E:1:0-#a4...Packet received: OK
Sending packet: $QTDP👎00000000004004d9:R03FFFFFFFFFFFFFFFFFF-#58...Packet received: OK
Sending packet: $QTDP👎00000000004004d9:SR03FFFFFFFFFFFFFFFFFF#7e...Packet received: OK
(gdb) tstop
Sending packet: $QTStop#4b...Packet received: OK
Sending packet: $QTNotes:#e8...Packet received: OK
(gdb) actions
Enter actions for tracepoint 1, one per line.
End with a line saying just "end".
>collect $regs
>end
(gdb) tstart
Sending packet: $QTinit#59...Packet received: OK
Sending packet: $QTDP:1:00000000004004d9:E:1:0-#a4...Packet received: OK
Sending packet: $QTDP👎00000000004004d9:R03FFFFFFFFFFFFFFFFFF#2b...Packet received: OK
The last "$QTDP:1:00000000004004d9:E:1:0-#a4" should be "$QTDP:1:00000000004004d9:E:0:0-#a3".
In pseudo-diff:
-$QTDP:1:00000000004004d9:E:1:0-#a4
+$QTDP:1:00000000004004d9:E:0:0-#a3
A related issue is that the "commands" command actually supports
setting commands to a range of breakpoints/tracepoints at once. But,
hacking "maint info breakpoints" to print t->step_count, reveals:
(gdb) trace main
Tracepoint 5 at 0x45a2ab: file ../../src/gdb/gdb.c, line 29.
(gdb) trace main
Note: breakpoint 5 also set at pc 0x45a2ab.
Tracepoint 6 at 0x45a2ab: file ../../src/gdb/gdb.c, line 29.
(gdb) commands 5-6
Type commands for breakpoint(s) 5-6, one per line.
End with a line saying just "end".
> while-stepping 5
>end
> end
(gdb) maint info breakpoints 5
Num Type Disp Enb Address What
5 tracepoint keep y 0x000000000045a2ab in main at ../../src/gdb/gdb.c:29 inf 1
step_count=5
^^^^^^^^^^^^
while-stepping 5
end
not installed on target
(gdb) maint info breakpoints 6
Num Type Disp Enb Address What
6 tracepoint keep y 0x000000000045a2ab in main at ../../src/gdb/gdb.c:29 inf 1
step_count=0
^^^^^^^^^^^^
while-stepping 5
end
not installed on target
(gdb)
that tracepoint 6 doesn't end up with the correct step_count.
The issue is that here:
static void
do_map_commands_command (struct breakpoint *b, void *data)
{
struct commands_info *info = data;
if (info->cmd == NULL)
{
struct command_line *l;
if (info->control != NULL)
l = copy_command_lines (info->control->body_list[0]);
else
{
struct cleanup *old_chain;
char *str;
str = xstrprintf (_("Type commands for breakpoint(s) "
"%s, one per line."),
info->arg);
old_chain = make_cleanup (xfree, str);
l = read_command_lines (str,
info->from_tty, 1,
(is_tracepoint (b)
? check_tracepoint_command : 0),
b);
do_cleanups (old_chain);
}
info->cmd = alloc_counted_command_line (l);
}
validate_actionline is never called for tracepoints other than the
first (the copy_command_lines path). Right below, we have:
/* If a breakpoint was on the list more than once, we don't need to
do anything. */
if (b->commands != info->cmd)
{
validate_commands_for_breakpoint (b, info->cmd->commands);
incref_counted_command_line (info->cmd);
decref_counted_command_line (&b->commands);
b->commands = info->cmd;
observer_notify_breakpoint_modified (b);
}
And validate_commands_for_breakpoint looks like the right place to put
a call; if we reset step_count there too, we have a nice central fix
for the first issue as well, because trace_actions_command calls
breakpoint_set_commands that also calls
validate_commands_for_breakpoint.
We end up calling validate_actionline twice for the first tracepoint,
since read_command_lines calls it too, through
check_tracepoint_command, but that should be harmless.
2013-04-04 Pedro Alves <palves@redhat.com>
Hui Zhu <hui@codesourcery.com>
* breakpoint.c (validate_commands_for_breakpoint): If validating a
tracepoint, reset its STEP_COUNT and call validate_actionline.
2013-04-04 Stan Shebs <stan@codesourcery.com>
Pedro Alves <palves@redhat.com>
* gdb.trace/Makefile.in (PROGS): Add actions-changed.
* gdb.trace/actions-changed.c: New file.
* gdb.trace/actions-changed.exp: New file.
* lib/trace-support.exp (gdb_trace_setactions): Rename to ...
(gdb_trace_setactions_command): ... this. Add "actions_command"
parameter, and handle it.
(gdb_trace_setactions, gdb_trace_setcommands): New procedures.
This is sort of a continuation of Keith's parse_exp_1 constification
patch. It started out by undoing these bits:
@@ -754,9 +754,12 @@ validate_actionline (char **line, struct
tmp_p = p;
for (loc = t->base.loc; loc; loc = loc->next)
{
- p = tmp_p;
- exp = parse_exp_1 (&p, loc->address,
+ const char *q;
+
+ q = tmp_p;
+ exp = parse_exp_1 (&q, loc->address,
block_for_pc (loc->address), 1);
+ p = (char *) q;
and progressively making more things const upwards, fixing fallout,
rinse repeat, until GDB built again (--enable-targets=all).
That ended up constifying lookup_cmd/add_cmd and (lots of) friends,
and the completers.
I didn't try to constify the command hooks themselves, because I know
upfront there are commands that write to the command string argument,
and I think I managed to stop at a nice non-hacky split point already.
I think the only non-really-super-obvious changes are
tracepoint.c:validate_actionline, and tracepoint.c:trace_dump_actions.
The rest is just mostly about 'char *' => 'const char *', 'char **'=>
'const char **', and the occasional (e.g., deprecated_cmd_warning)
case of 'char **'=> 'const char *', where/when I noticed that nothing
actually cares about the pointer to pointer output.
Tested on x86_64 Fedora 17, native and gdbserver.
gdb/
2013-03-13 Pedro Alves <palves@redhat.com>
* ada-lang.c (struct add_partial_datum) <text, text0, word>: Make
fields const.
(ada_make_symbol_completion_list): Make "text0" parameter const.
* ax-gdb.c (agent_eval_command_one): Make "exp" parameter const.
* breakpoint.c (condition_completer): Make "text" and "word"
parameters const. Adjust.
(check_tracepoint_command): Adjust to validate_actionline
prototype change.
(catch_syscall_completer): Make "text" and "word" parameters
const.
* cli/cli-cmds.c (show_user): Make "comname" local const.
(valid_command_p): Make "command" parameter const.
(alias_command): Make "alias_prefix" and "command_prefix" locals
const.
* cli/cli-decode.c (add_cmd): Make "name" parameter const.
(add_alias_cmd): Make "name" and "oldname" parameters const.
Adjust. No longer make copy of OLDNAME.
(add_prefix_cmd, add_abbrev_prefix_cmd, add_set_or_show_cmd)
(add_setshow_cmd_full, add_setshow_enum_cmd)
(add_setshow_auto_boolean_cmd, add_setshow_boolean_cmd)
(add_setshow_filename_cmd, add_setshow_string_cmd)
(add_setshow_string_noescape_cmd)
(add_setshow_optional_filename_cmd, add_setshow_integer_cmd)
(add_setshow_uinteger_cmd, add_setshow_zinteger_cmd)
(add_setshow_zuinteger_unlimited_cmd, add_setshow_zuinteger_cmd)
(delete_cmd, add_info, add_info_alias, add_com, add_com_alias):
Make "name" parameter const.
(help_cmd): Rename "command" parameter to "arg". New const local
"command".
(find_cmd): Make "command" parameter const.
(lookup_cmd_1): Make "text" parameter pointer to const. Adjust to
deprecated_cmd_warning prototype change.
(undef_cmd_error): Make "cmdtype" parameter const.
(lookup_cmd): Make "line" parameter const.
(deprecated_cmd_warning): Change type of "text" parameter to
pointer to const char, from pointer to pointer to char. Adjust.
(lookup_cmd_composition): Make "text" parameter const.
(complete_on_cmdlist, complete_on_enum): Make "text" and "word"
parameters const.
* cli/cli-decode.h (struct cmd_list_element) <name>: Make field
const.
* cli/cli-script.c (validate_comname): Make "tem" local const.
(define_command): New const local "tem_c". Use it in calls to
lookup_cmd.
(document_command): Make "tem" and "comfull" locals const.
(show_user_1): Make "prefix" and "name" parameters const.
* cli-script.h (show_user_1): Make "prefix" and "name" parameters
const.
* command.h (add_cmd, add_alias_cmd, add_prefix_cmd)
(add_abbrev_prefix_cmd, completer_ftype, lookup_cmd, lookup_cmd_1)
(deprecated_cmd_warning, lookup_cmd_composition, add_com)
(add_com_alias, add_info, add_info_alias, complete_on_cmdlist)
(complete_on_enum, add_setshow_enum_cmd)
(add_setshow_auto_boolean_cmd, add_setshow_boolean_cmd)
(add_setshow_filename_cmd, add_setshow_string_cmd)
(add_setshow_string_noescape_cmd)
(add_setshow_optional_filename_cmd, add_setshow_integer_cmd)
(add_setshow_uinteger_cmd, add_setshow_zinteger_cmd)
(add_setshow_zuinteger_cmd, add_setshow_zuinteger_unlimited_cmd):
Change prototypes, constifying strings.
* completer.c (noop_completer, filename_completer): Make "text"
and "prefix" parameters const.
(location_completer, expression_completer)
(complete_line_internal): Make "text" and "prefix" parameters
const and adjust.
(command_completer, signal_completer): Make "text" and "prefix"
parameters const.
* completer.h (noop_completer, filename_completer)
(expression_completer, location_completer, command_completer)
(signal_completer): Change prototypes.
* corefile.c (complete_set_gnutarget): Make "text" and "word"
parameters const.
* cp-abi.c (cp_abi_completer): Likewise.
* expression.h (parse_expression_for_completion): Change
prototype.
* f-lang.c (f_make_symbol_completion_list): Make "text" and "word"
parameters const.
* infcmd.c (_initialize_infcmd): Make "cmd_name" local const.
* infrun.c (handle_completer): Make "text" and "word" parameters
const.
* interps.c (interpreter_completer): Make "text" and "word"
parameters const.
* language.h (struct language_defn)
<la_make_symbol_completion_list>: Make "text" and "word"
parameters const.
* parse.c (parse_exp_1): Move const hack to parse_exp_in_context.
(parse_exp_in_context): Rename to ...
(parse_exp_in_context_1): ... this.
(parse_exp_in_context): Reimplement, with const hack from
parse_exp_1.
(parse_expression_for_completion): Make "string" parameter const.
* printcmd.c (decode_format): Make "string_ptr" parameter pointer
to pointer to const char. Adjust.
(print_command_1): Make "exp" parameter const.
(output_command): Rename to ...
(output_command_const): ... this. Make "exp" parameter const.
(output_command): Reimplement.
(x_command): Adjust.
(display_command): Rename "exp" parameter to "arg". New "exp"
local, const version of "arg".
* python/py-auto-load.c (gdbpy_initialize_auto_load): Make
"cmd_name" local const.
* python/py-cmd.c (cmdpy_destroyer): Cast const away in xfree
call.
(cmdpy_completer): Make "text" and "word" parameters const.
(gdbpy_parse_command_name): Make "prefix_text2" local const.
* python/py-param.c (add_setshow_generic): Make "tmp_name" local
const.
* remote.c (_initialize_remote): Make "cmd_name" local const.
* symtab.c (language_search_unquoted_string): Make "text" and "p"
parameters const. Adjust.
(completion_list_add_fields): Make "sym_text", "text" and "word"
parameters const.
(struct add_name_data) <sym_text, text, word>: Make fields const.
(default_make_symbol_completion_list_break_on): Make "text" and
"word" parameters const. Adjust locals.
(default_make_symbol_completion_list)
(make_symbol_completion_list, make_symbol_completion_type)
(make_symbol_completion_list_fn): Make "text" and "word"
parameters const.
(make_file_symbol_completion_list): Make "text", "word" and
"srcfile" parameters const. Adjust locals.
(add_filename_to_list): Make "text" and "word" parameters const.
(struct add_partial_filename_data) <text, word>: Make fields
const.
(make_source_files_completion_list): Make "text" and "word"
parameters const.
* symtab.h (default_make_symbol_completion_list_break_on)
(default_make_symbol_completion_list, make_symbol_completion_list)
(make_symbol_completion_type enum type_code)
(make_symbol_completion_list_fn make_file_symbol_completion_list)
(make_source_files_completion_list): Change prototype.
* top.c (execute_command): Adjust to pass pointer to pointer to
const char to lookup_cmd, and to deprecated_cmd_warning prototype
change.
(set_verbose): Make "cmdname" local const.
* tracepoint.c (decode_agent_options): Make "exp" parameter const,
and adjust.
(validate_actionline): Make "line" parameter a pointer to const
char, and adjust.
(encode_actions_1): Make "action_exp" local const, and adjust.
(encode_actions): Adjust.
(replace_comma): Delete.
(trace_dump_actions): Make "action_exp" and "next_comma" locals
const, and adjust. Don't frob the action string while splitting
it at commas. Instead, make a copy of each split substring in
turn.
(trace_dump_command): Adjust to validate_actionline prototype
change.
* tracepoint.h (decode_agent_options, decode_agent_options)
(encode_actions, validate_actionline): Change prototypes.
* valprint.h (output_command): Delete declaration.
(output_command_const): Declare.
* value.c (function_destroyer): Cast const away in xfree call.
pointer to expression string to parse_exp_1.
(create_excep_cond_exprs): Likewise.
* ax-gdb.c (agent_eval_command_one): Likewise.
(maint_agent_printf_command): Likewise.
Constify much of the string handling/parsing.
* breakpoint.c (set_breakpoint_condition): Pass const
pointer to expression string to parse_exp_1.
(update_watchpoint): Likewise.
(parse_cmd_to_aexpr): Constify string handling.
Pass const pointer to parse_exp_1.
(init_breakpoint_sal): Pass const pointer to parse_exp_1.
(find_condition_and_thread): Likewise.
Make TOK const.
(watch_command_1): Make "arg" const.
Constify string handling.
Copy the expression string instead of changing the input
string.
(update_breakpoint_location): Pass const pointer to
parse_exp_1.
* eval.c (parse_and_eval_address): Make "exp" const.
(parse_to_comma_and_eval): Make "expp" const.
(parse_and_eval): Make "exp" const.
* expression.h (parse_expression): Make argument const.
(parse_exp_1): Make first argument const.
* findcmd.c (parse_find_args): Treat "args" as const.
* linespec.c (parse_linespec): Pass const pointer to
linespec_expression_to_pc.
(linespec_expression_to_pc): Make "exp_ptr" const.
* parse.c (parse_exp_1): Make "stringptr" const.
Make a copy of the expression to pass to parse_exp_in_context until
this whole interface can be constified.
(parse_expression): Make "string" const.
* printcmd.c (ui_printf): Treat "arg" as const.
Handle const strings.
* tracepoint.c (validate_actionline): Pass const pointer to
all calls to parse_exp_1.
(encode_actions_1): Likewise.
* value.h (parse_to_comma_and_eval): Make argument const.
(parse_and_eval_address): Likewise.
(parse_and_eval): Likewise.
* varobj.c (varobj_create): Pass const pointer to parse_exp_1.
(varobj_set_value): Likewise.
* cli/cli-cmds.c (disassemble_command): Treat "arg" as const and
constify string handling.
Pass const pointers to parse_and_eval_address and
parse_to_comman_and_eval.
* cli/cli-utils.c (skip_to_space): Rename to ...
(skip_to_space_const): ... this. Handle const strings.
* cli/cli-utils.h (skip_to_space): Turn into macro which invokes
skip_to_space_const.
(skip_to_space_const): Declare.
* common/format.c (parse_format_string): Make "arg" const.
Handle const strings.
* common/format.h (parse_format_string): Make "arg" const.
* gdbserver/ax.c (ax_printf): Make "format" const.
* python/python.c (gdbpy_parse_and_eval): Do not make a copy
of the expression string.
(trace_pass_command): Likewise.
* cli/cli-cmds.c: Include cli/cli-utils.h.
(source_command): Use skip-spaces.
(disassemble_command): Likewise.
* findcmd.c: Include cli/cli-utils.h.
(parse_find_args): Use skip_spaces.
* go32-nat.c: Include cli/cli-utils.h.
(go32_sldt): Use skip_spaces.
(go32_sgdt): Likewise.
(go32_sidt): Likewise.
(go32_pde): Likewise.
(go32_pte): Likewise.
(go32_pte_for_address): Likewise.
* infcmd.c: Include cli/cli-utils.h.
(registers_info): Use skip_spaces.
* linux-tdep.c (read_mapping): Use skip_spaces_const.
(linux_info_proc): Likewise.
* linux-thread-db.c: Include cli/cli-utils.h.
(info_auto_load_libthread_db): Use skip_spaces_const.
* m32r-rom.c: Include cli/cli-utils.h.
(m32r_upload_command): Use skip_spaces.
* maint.c: Include cli/cli-utils.h.
(maintenance_translate_address): Use skip_spaces.
* mi/mi-parse.c: Include cli/cli-utils.h.
(mi_parse_argv): Use skip_spaces.
(mi_parse): Likewise.
* minsyms.c: Include cli/cli-utils.h.
(msymbol_hash_iw): Use skip_spaces_const.
* objc-lang.c: Include cli/cli-utils.h.
(parse_selector): Use skip_spaces.
(parse_method): Likewise.
* python/python.c: Include cli/cli-utils.h.
(python_interactive_command)[HAVE_PYTHON]: Use skip_spaces.
(python_command)[HAVE_PYTHON]: Likewise.
(python_interactive_command)[!HAVE_PYTHON]: Likewise.
* remote-m32r-sdi.c: Include cli/cli-utils.h.
(m32r_load): Use skip_spaces.
* serial.c: Include cli/cli-utils.h.
(serial_open): Use skip_spaces_const.
* stack.c: Include cli/cli-utils.h.
(parse_frame_specification_1): Use skip_spaces_const.
* symfile.c: Include cli/cli-utils.h.
(set_ext_lang_command): Use skip_spaces.
* symtab.c: Include cli/cli-utils.h.
(rbreak_command): Use skip_spaces.
* thread.c (thread_name_command): Use skip_spaces.
* tracepoint.c (validate_actionline): Use skip_spaces.
(encode_actions_1): Likewise.
(trace_find_range_command): Likewise.
(trace_find_outside_command): Likewise.
(trace_dump_actions): Likewise.
$ make WERROR_CFLAGS="-Wpointer-sign -Werror" breakpoint.o 2>&1 1>/dev/null
../../src/gdb/breakpoint.c: In function ‘breakpoint_xfer_memory’:
../../src/gdb/breakpoint.c:1578:2: error: pointer targets in passing argument 3 of ‘gdbarch_breakpoint_from_pc’ differ in signedness [-Werror=pointer-sign]
In file included from ../../src/gdb/defs.h:644:0,
from ../../src/gdb/breakpoint.c:20:
../../src/gdb/gdbarch.h:495:25: note: expected ‘int *’ but argument is of type ‘unsigned int *’
target_info.placed_size is an 'int', and gdbarch_breakpoint_from_pc
takes an int too.
gdb/
2013-03-07 Pedro Alves <palves@redhat.com>
* breakpoint.c.c (breakpoint_xfer_memory): Change type of local to
int.
* ada-lang.c (user_select_syms): Replace symtab->filename refererences
by symtab_to_filename_for_display calls.
* breakpoint.c (print_breakpoint_location, resolve_sal_pc): Likewise.
(clear_command): New variable sal_fullname, initialize it. Replace
compare_filenames_for_search by filename_cmp with sal_fullname.
(say_where, update_static_tracepoint): Replace symtab->filename
refererences by symtab_to_filename_for_display calls.
* cli/cli-cmds.c (edit_command, list_command, ambiguous_line_spec):
Likewise.
* dwarf2read.c: Include source.h.
(fixup_go_packaging): Replace symtab->filename refererences by
symtab_to_filename_for_display calls.
* linespec.c (add_sal_to_sals): Rename variable filename to fullname.
Replace symtab->filename refererences by symtab_to_filename_for_display
calls.
(create_sals_line_offset, convert_linespec_to_sals): New variable
fullname, initialize it, replace symtab->filename reference by the
variable.
* linux-fork.c: Include source.h.
(info_checkpoints_command): Replace symtab->filename refererences by
symtab_to_filename_for_display calls.
* macroscope.c (sal_macro_scope): Replace symtab->filename refererences
by symtab_to_filename_for_display calls.
* mdebugread.c: Include source.h.
(psymtab_to_symtab_1): Replace symtab->filename refererences by
symtab_to_filename_for_display calls.
* mi/mi-cmd-file.c (mi_cmd_file_list_exec_source_file)
(mi_cmd_file_list_exec_source_files): Likewise.
* printcmd.c: Include source.h.
(build_address_symbolic): Replace symtab->filename refererences by
symtab_to_filename_for_display calls.
* psymtab.c (partial_map_symtabs_matching_filename)
(read_psymtabs_with_fullname): Call compare_filenames_for_search also
with psymtab_to_fullname.
* python/py-symtab.c (stpy_str): Replace symtab->filename refererences
by symtab_to_filename_for_display calls.
(stpy_get_filename): New variable filename, initialize it, use instead
of symtab->filename refererences.
(salpy_str): Make variable filename const char *. Replace
symtab->filename refererences by symtab_to_filename_for_display calls.
* skip.c: Include source.h and filenames.h.
(skip_file_command): Remove const from the symtab variable. Replace
symtab->filename refererences by symtab_to_fullname call.
(function_name_is_marked_for_skip): New variables searched_for_fullname
and fullname. Use them to search also with symtab's fullname.
* source.c (find_source_lines): Replace symtab->filename refererences
by symtab_to_filename_for_display calls.
(print_source_lines_base): New variable filename, use it instead of
symtab->filename. Replace symtab->filename refererences by
symtab_to_filename_for_display calls.
(line_info, forward_search_command): Replace symtab->filename
refererences by symtab_to_filename_for_display calls.
(reverse_search_command): Replace symtab->filename refererences by
symtab_to_filename_for_display calls. New variable filename for it.
* stack.c (frame_info): Likewise.
* symmisc.c: Include source.h.
(dump_objfile, dump_symtab_1, maintenance_print_symbols)
(maintenance_info_symtabs): Replace symtab->filename refererences by
symtab_to_filename_for_display calls.
* symtab.c (iterate_over_some_symtabs): Call
compare_filenames_for_search also with symtab_to_fullname.
(lookup_symbol_aux_quick, basic_lookup_transparent_type_quick): Replace
symtab->filename refererences by symtab_to_filename_for_display calls.
(find_line_symtab): Replace symtab->filename refererences by
symtab_to_filename_for_display calls.
(file_matches): Replace filename_cmp by compare_filenames_for_search.
(print_symbol_info): Make the last parameter const char *. New
variable s_filename. Use it in the function.
(symtab_symbol_info): Make the last_filename variable const char *.
Replace symtab->filename refererences by symtab_to_filename_for_display
calls.
(rbreak_command): New variable fullname. Use it. Replace
symtab->filename refererence by symtab_to_filename_for_display call.
* tracepoint.c (set_traceframe_context, trace_find_line_command)
(print_one_static_tracepoint_marker): Replace symtab->filename
refererences by symtab_to_filename_for_display calls.
* tui/tui-source.c (tui_set_source_content): New variables filename and
s_filename. Replace symtab->filename refererences by this variable.
Replace other symtab->filename refererences by
symtab_to_filename_for_display calls.
Code cleanup.
* breakpoint.c (clear_command): Remove variable is_abs, unify the
call of filename_cmp with compare_filenames_for_search.
* dwarf2read.c (dw2_map_symtabs_matching_filename): Remove variable
is_abs, unify the call of FILENAME_CMP with
compare_filenames_for_search. New gdb_asserts for real_path and name.
Unify the call of compare_filenames_for_search with FILENAME_CMP.
* psymtab.c (partial_map_symtabs_matching_filename): Likewise.
* symfile.h (struct quick_symbol_functions): Extend the comment for
map_symtabs_matching_filename.
* symtab.c (compare_filenames_for_search): Remove the function comment
relative path requirement. Handle absolute filenames, with a comment.
(iterate_over_some_symtabs): Remove variable is_abs, unify the call of
FILENAME_CMP with compare_filenames_for_search. New gdb_asserts for
real_path and name. Unify the call of compare_filenames_for_search
with FILENAME_CMP.
(iterate_over_symtabs): New gdb_assert on REAL_PATH.
gdb/testsuite/
* gdb.mi/mi-fullname-deleted.exp: Use double last slash for $srcfileabs.
(compare_filenames_for_search does not match)
(compare_filenames_for_search does match): New tests.
Code cleanup.
* breakpoint.c (print_breakpoint_location): Replace bp_location field
source_file references by symtab field references. Remove variables
sal and fullname.
(momentary_breakpoint_from_master, add_location_to_breakpoint):
(clear_command, say_where): Replace bp_location field source_file
references by symtab field references.
(bp_location_dtor): Remove the source_file reference.
(update_static_tracepoint): Replace bp_location field source_file
references by symtab field references.
(breakpoint_free_objfile): New function.
* breakpoint.h (struct bp_location): Extend the comment for line_number.
Replace the field source_file by field symtab, extend its comment.
(breakpoint_free_objfile): New declaration.
* objfiles.c (free_objfile): Call breakpoint_free_objfile.
* tui/tui-winsource.c (tui_update_breakpoint_info): Replace bp_location
field source_file references by symtab field references.
observer_notify_breakpoints_changed calls. All, except the
init_raw_breakpoint one. But that one is actually wrong. The
breakpoint is being constructed at that point, and hasn't been placed
on the breakpoint chain yet. It would be better placed in
install_breakpoint, and I actually started out that way. But once the
annotate_breakpoints_changed are parallel to the observer calls, we
can fully move annotations to observers too.
One issue is that this changes the order of annotations a bit.
Before, we'd emit the annotation, and after call "mention()" on the
breakpoint (which prints the breakpoint number, etc.). But, we call
the observers _after_ mention is called, so the annotation output will
change a little:
void
install_breakpoint (int internal, struct breakpoint *b, int update_gll)
{
add_to_breakpoint_chain (b);
set_breakpoint_number (internal, b);
if (is_tracepoint (b))
set_tracepoint_count (breakpoint_count);
if (!internal)
mention (b);
observer_notify_breakpoint_created (b);
if (update_gll)
update_global_location_list (1);
}
I believe this order doesn't really matter (the frontend needs to wait
for the prompt anyway), so I just adjust the expected output in the
tests. Emacs in annotations mode doesn't seem to complain. Couple
that with the previous patch that suppressed duplicated annotations,
and, the fact that some annotations calls were actually missing (were
we do have observer calls), more changes to the tests are needed
anyway.
Tested on x86_64 Fedora 17.
gdb/
2013-01-22 Pedro Alves <palves@redhat.com>
* annotate.c (annotate_breakpoints_changed): Rename to ...
(annotate_breakpoints_invalid): ... this. Make static.
(breakpoint_changed): Adjust.
(_initialize_annotate): Always install the observers. Install a
"breakpoint_created" observer.
* annotate.h (annotate_breakpoints_changed): Delete declaration.
* breakpoint.c (set_breakpoint_condition)
(breakpoint_set_commands, do_map_commands_command)
(init_raw_breakpoint, clear_command, set_ignore_count)
(enable_breakpoint_disp): No longer call
annotate_breakpoints_changed.
gdb/testsuite/
2013-01-22 Pedro Alves <palves@redhat.com>
* gdb.base/annota1.exp (breakpoints_invalid): New variable.
Adjust tests to breakpoints-invalid changes.
* gdb.cp/annota2.exp (breakpoints_invalid, frames_invalid): New
variables.
Adjust tests to breakpoints-invalid changes.
suppress multiple breakpoints-invalid annotations when the ignore
count of a breakpoint changes, up until the target actually stops.
But, the code is bogus:
void
annotate_breakpoints_changed (void)
{
if (annotation_level == 2)
{
target_terminal_ours ();
printf_unfiltered (("\n\032\032breakpoints-invalid\n"));
if (ignore_count_changed)
ignore_count_changed = 0; /* Avoid multiple break annotations. */
}
}
The "ignore_count_changed" flag isn't actually guarding the output of
the annotation at all. It would have been better written something
like:
void
annotate_breakpoints_changed (void)
{
if (annotation_level == 2 && !ignore_count_changed)
{
target_terminal_ours ();
printf_unfiltered (("\n\032\032breakpoints-invalid\n"));
ignore_count_changed = 0; /* Avoid multiple break annotations. */
}
}
but, it wasn't. AFAICS, that goes all the way back to the original
patch'es submission and check in, at
<http://sourceware.org/ml/gdb-patches/1999-q4/msg00106.html>. I
looked a tar of HP's wdb from 1999, and even though that contains
local changes in the annotate code, this suppression seems borked
there too to me.
The original patch added a test to supposedly exercise this
suppression, but, it actually doesn't. It merely tests that
"breakpoints-invalid" is output after "stopped", but doesn't check
whether the duplicates supression actually works (IOW, check that only
_one_ annotation is seen). I was going to simply delete the tests
too, but a following patch will eliminate the duplicates in a
different way (which I needed for a different reason), so instead, I'm
making the tests actually fail if a duplicate annotation is seen.
Worry not, the test doesn't actually fail! The reason is that
breakpoint.c does:
else if (b->ignore_count > 0)
{
b->ignore_count--;
annotate_ignore_count_change ();
bs->stop = 0;
/* Increase the hit count even though we don't stop. */
++(b->hit_count);
observer_notify_breakpoint_modified (b);
}
where the annotate_ignore_count_change call is meant to inform the
"breakpoint_modified" annotation observer to ignore the notification.
All sounds good. But, the trouble is that nowadays annotate.c only
installs the observers if GDB is started with annotations enabled with
a command line option (gdb --annotate=2):
void
_initialize_annotate (void)
{
if (annotation_level == 2)
{
observer_attach_breakpoint_deleted (breakpoint_changed);
observer_attach_breakpoint_modified (breakpoint_changed);
}
}
and annota1.exp, to enable annotations, starts GDB normally, and
afterwards does "set annotate 2", so the observers aren't installed
when annota1.exp is run, and therefore changing the ignore count isn't
triggering any annotation at all...
gdb/
2013-01-22 Pedro Alves <palves@redhat.com>
* annotate.c (ignore_count_changed): Delete.
(annotate_breakpoints_changed): Don't clear ignore_count_changed.
(annotate_ignore_count_change): Delete.
(annotate_stopped): Don't emit a delayed breakpoints-changed
annotation.
* annotate.h (annotate_ignore_count_change): Delete.
* breakpoint.c (bpstat_check_breakpoint_conditions): Don't call
annotate_ignore_count_change.
gdb/testsuite/
2013-01-22 Pedro Alves <palves@redhat.com>
* gdb.base/annota1.exp (annotate ignore count change): Add
expected output for failure case.
* breakpoint.c (print_one_breakpoint_location): Add MI
field 'thread-groups' when printing a breakpoint.
(output_thread_groups): New function.
2013-01-21 Marc Khouzam <marc.khouzam@ericsson.com>
* gdb.texinfo (GDB/MI Breakpoint Commands): Document new
'thread-groups' field when printing a breakpoint in MI.
2013-01-21 Marc Khouzam <marc.khouzam@ericsson.com>
* gdb.mi/mi-break.exp: Expect new 'thread-groups' field.
* gdb.mi/mi-nsmoribund.exp: Expect new 'thread-groups' field.
Also handle 'thread' field.
* gdb.mi/mi-simplerun.exp: Expect new 'thread-groups' field.
* gdb.mi/mi-watch.exp: Ditto.
* lib/mi-support.exp: Ditto.
* breakpoint.c (print_one_breakpoint_location): Remove dead code.
(update_dprintf_command_list): Assert that 'printf_line' is
non-null. Remove condition check.
Two modifications:
1. The addition of 2013 to the copyright year range for every file;
2. The use of a single year range, instead of potentially multiple
year ranges, as approved by the FSF.
* breakpoint.c (breakpoint_re_set): Remove the skip_re_set call.
* infrun.c (handle_inferior_event): Rename the called function to
function_name_is_marked_for_skip, pass it TMP_SAL.
* skip.c (struct skiplist_entry): Update function_name comment. Remove
fields pc, gdbarch and pending.
(skip_function_pc): Rename this forward declaration to ...
(skip_function): ... here.
(skip_file_command): Remove variable pending and its use, remove
initialization of E fields pending and gdbarch. Do not use SYMTAB
filename, use the specified one.
(skip_function_command): Remove variable func_pc, do not set it.
Update the caller of skip_function. Replace decode_line_1 call by
a lookup_symbol call. Remove variables orig_arg, decode_exception and
sals. Update the caller of skip_function.
(skip_info): Remove variable address_width and its use. Do not print
address (PC). Renumber column 5 to 4.
(skip_function_pc): Rename to ...
(skip_function): ... here and remove its parameters pc, arch and
pending. Update the function comment and no longer use those
parameters.
(function_pc_is_marked_for_skip): Rename to ...
(function_name_is_marked_for_skip): ... here, update function comment
just to a skip.h reference, replace pc parameter by function_name and
function_sal. No longer use E field pending and pc. Remove variables
searched_for_sal, sal and filename. Call compare_filenames_for_search
instead of just strcmp.
(skip_re_set): Remove the function.
* skip.h (struct symtab_and_line): New declaration.
(function_pc_is_marked_for_skip): Rename to ...
(function_name_is_marked_for_skip): ... here, replace pc parameter by
function_name and function_sal, update the function comment.
gdb/testsuite/
* gdb.base/skip-solib.exp (info skip with pending file): Update the
expected output.
(info skip with pending file): Remove.
(ignoring function in solib, info skip for function multiply): Update
the expected output.
* gdb.base/skip.ex (skip (main), skip function baz, info skip)
(info skip (delete 1), info skip after disabling all)
(info skip after enabling all, info skip after disabling 4 2-3)
(info skip after enabling 2-3, info skip 2-3)
(info skip after deleting 2 3): Update the expected output.
* gdb.linespec/base/two/thefile.cc (n): New variable v, split the
statement to its initialization and return.
* gdb.linespec/skip-two.exp: New file.
Pedro Alves