/* Everything about catch/throw catchpoints, for GDB.
- Copyright (C) 1986-2016 Free Software Foundation, Inc.
+ Copyright (C) 1986-2018 Free Software Foundation, Inc.
This file is part of GDB.
/* The type of an exception catchpoint. */
-struct exception_catchpoint
+struct exception_catchpoint : public breakpoint
{
- /* The base class. */
-
- struct breakpoint base;
-
/* The kind of exception catchpoint. */
enum exception_event_kind kind;
- /* If non-NULL, an xmalloc'd string holding the source form of the
- regular expression to match against. */
+ /* If not empty, a string holding the source form of the regular
+ expression to match against. */
- char *exception_rx;
+ std::string exception_rx;
- /* If non-NULL, an xmalloc'd, compiled regular expression which is
- used to determine which exceptions to stop on. */
+ /* If non-NULL, a compiled regular expression which is used to
+ determine which exceptions to stop on. */
- regex_t *pattern;
+ std::unique_ptr<compiled_regex> pattern;
};
\f
unsigned n_args;
pc_probe = find_probe_by_pc (pc);
- if (pc_probe.probe == NULL
- || strcmp (pc_probe.probe->provider, "libstdcxx") != 0
- || (strcmp (pc_probe.probe->name, "catch") != 0
- && strcmp (pc_probe.probe->name, "throw") != 0
- && strcmp (pc_probe.probe->name, "rethrow") != 0))
+ if (pc_probe.prob == NULL
+ || pc_probe.prob->get_provider () != "libstdcxx"
+ || (pc_probe.prob->get_name () != "catch"
+ && pc_probe.prob->get_name () != "throw"
+ && pc_probe.prob->get_name () != "rethrow"))
error (_("not stopped at a C++ exception catchpoint"));
- n_args = get_probe_argument_count (pc_probe.probe, frame);
+ n_args = pc_probe.prob->get_argument_count (frame);
if (n_args < 2)
error (_("C++ exception catchpoint has too few arguments"));
if (arg0 != NULL)
- *arg0 = evaluate_probe_argument (pc_probe.probe, 0, frame);
- *arg1 = evaluate_probe_argument (pc_probe.probe, 1, frame);
+ *arg0 = pc_probe.prob->evaluate_argument (0, frame);
+ *arg1 = pc_probe.prob->evaluate_argument (1, frame);
if ((arg0 != NULL && *arg0 == NULL) || *arg1 == NULL)
error (_("error computing probe argument at c++ exception catchpoint"));
return cp->kind;
}
-/* Implement the 'dtor' method. */
-
-static void
-dtor_exception_catchpoint (struct breakpoint *self)
-{
- struct exception_catchpoint *cp = (struct exception_catchpoint *) self;
-
- xfree (cp->exception_rx);
- if (cp->pattern != NULL)
- regfree (cp->pattern);
- bkpt_breakpoint_ops.dtor (self);
-}
-
/* Implement the 'check_status' method. */
static void
if (!type_name.empty ())
{
- if (regexec (self->pattern, type_name.c_str (), 0, NULL, 0) != 0)
+ if (self->pattern->exec (type_name.c_str (), 0, NULL, 0) != 0)
bs->stop = 0;
}
}
static void
re_set_exception_catchpoint (struct breakpoint *self)
{
- struct symtabs_and_lines sals = {0};
- struct symtabs_and_lines sals_end = {0};
- struct cleanup *cleanup;
+ std::vector<symtab_and_line> sals;
enum exception_event_kind kind = classify_exception_breakpoint (self);
- struct event_location *location;
struct program_space *filter_pspace = current_program_space;
/* We first try to use the probe interface. */
TRY
{
- location
+ event_location_up location
= new_probe_location (exception_functions[kind].probe);
- cleanup = make_cleanup_delete_event_location (location);
- sals = parse_probes (location, filter_pspace, NULL);
- do_cleanups (cleanup);
+ sals = parse_probes (location.get (), filter_pspace, NULL);
}
CATCH (e, RETURN_MASK_ERROR)
{
initialize_explicit_location (&explicit_loc);
explicit_loc.function_name
= ASTRDUP (exception_functions[kind].function);
- location = new_explicit_location (&explicit_loc);
- cleanup = make_cleanup_delete_event_location (location);
- self->ops->decode_location (self, location, filter_pspace, &sals);
- do_cleanups (cleanup);
+ event_location_up location = new_explicit_location (&explicit_loc);
+ sals = self->ops->decode_location (self, location.get (),
+ filter_pspace);
}
CATCH (ex, RETURN_MASK_ERROR)
{
}
END_CATCH
- cleanup = make_cleanup (xfree, sals.sals);
- update_breakpoint_locations (self, filter_pspace, sals, sals_end);
- do_cleanups (cleanup);
+ update_breakpoint_locations (self, filter_pspace, sals, {});
}
static enum print_stop_action
maybe_print_thread_hit_breakpoint (uiout);
bp_temp = b->disposition == disp_del;
- ui_out_text (uiout,
- bp_temp ? "Temporary catchpoint "
+ uiout->text (bp_temp ? "Temporary catchpoint "
: "Catchpoint ");
- if (!ui_out_is_mi_like_p (uiout))
- ui_out_field_int (uiout, "bkptno", b->number);
- ui_out_text (uiout,
- (kind == EX_EVENT_THROW ? " (exception thrown), "
+ uiout->field_int ("bkptno", b->number);
+ uiout->text ((kind == EX_EVENT_THROW ? " (exception thrown), "
: (kind == EX_EVENT_CATCH ? " (exception caught), "
: " (exception rethrown), ")));
- if (ui_out_is_mi_like_p (uiout))
+ if (uiout->is_mi_like_p ())
{
- ui_out_field_string (uiout, "reason",
+ uiout->field_string ("reason",
async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT));
- ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition));
- ui_out_field_int (uiout, "bkptno", b->number);
+ uiout->field_string ("disp", bpdisp_text (b->disposition));
}
return PRINT_SRC_AND_LOC;
}
{
annotate_field (4);
if (b->loc == NULL || b->loc->shlib_disabled)
- ui
_out_field_string (uiout, "addr", "<PENDING>");
+ ui
out->field_string ("addr", "<PENDING>");
else
- ui_out_field_core_addr (uiout, "addr",
+ uiout->field_core_addr ("addr",
b->loc->gdbarch, b->loc->address);
}
annotate_field (5);
switch (kind)
{
case EX_EVENT_THROW:
- ui_out_field_string (uiout, "what", "exception throw");
- if (ui_out_is_mi_like_p (uiout))
- ui_out_field_string (uiout, "catch-type", "throw");
+ uiout->field_string ("what", "exception throw");
+ if (uiout->is_mi_like_p ())
+ uiout->field_string ("catch-type", "throw");
break;
case EX_EVENT_RETHROW:
- ui_out_field_string (uiout, "what", "exception rethrow");
- if (ui_out_is_mi_like_p (uiout))
- ui_out_field_string (uiout, "catch-type", "rethrow");
+ uiout->field_string ("what", "exception rethrow");
+ if (uiout->is_mi_like_p ())
+ uiout->field_string ("catch-type", "rethrow");
break;
case EX_EVENT_CATCH:
- ui_out_field_string (uiout, "what", "exception catch");
- if (ui_out_is_mi_like_p (uiout))
- ui_out_field_string (uiout, "catch-type", "catch");
+ uiout->field_string ("what", "exception catch");
+ if (uiout->is_mi_like_p ())
+ uiout->field_string ("catch-type", "catch");
break;
}
}
const struct exception_catchpoint *cp
= (const struct exception_catchpoint *) b;
- if (cp->exception_rx != NULL)
+ if (!cp->exception_rx.empty ())
{
- ui_out_text (uiout, _("\tmatching: "));
- ui_out_field_string (uiout, "regexp", cp->exception_rx);
- ui_out_text (uiout, "\n");
+ uiout->text (_("\tmatching: "));
+ uiout->field_string ("regexp", cp->exception_rx.c_str ());
+ uiout->text ("\n");
}
}
enum exception_event_kind kind = classify_exception_breakpoint (b);
bp_temp = b->disposition == disp_del;
- ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ")
+ uiout->text (bp_temp ? _("Temporary catchpoint ")
: _("Catchpoint "));
- ui_out_field_int (uiout, "bkptno", b->number);
- ui_out_text (uiout, (kind == EX_EVENT_THROW ? _(" (throw)")
+ uiout->field_int ("bkptno", b->number);
+ uiout->text ((kind == EX_EVENT_THROW ? _(" (throw)")
: (kind == EX_EVENT_CATCH ? _(" (catch)")
: _(" (rethrow)"))));
}
}
static void
-handle_gnu_v3_exceptions (int tempflag, char *except_rx, char *cond_string,
+handle_gnu_v3_exceptions (int tempflag, std::string &&except_rx,
+ const char *cond_string,
enum exception_event_kind ex_event, int from_tty)
{
- regex_t *pattern = NULL;
+ std::unique_ptr<compiled_regex> pattern;
- if (except_rx != NULL)
+ if (!except_rx.empty ())
{
- pattern = XNEW (regex_t);
- make_cleanup (xfree, pattern);
-
- compile_rx_or_error (pattern, except_rx,
- _("invalid type-matching regexp"));
+ pattern.reset (new compiled_regex (except_rx.c_str (), REG_NOSUB,
+ _("invalid type-matching regexp")));
}
- gdb::unique_ptr<exception_catchpoint> cp (new exception_catchpoint ());
+ std::unique_ptr<exception_catchpoint> cp (new exception_catchpoint ());
- init_catchpoint (&cp->base, get_current_arch (), tempflag, cond_string,
+ init_catchpoint (cp.get (), get_current_arch (), tempflag, cond_string,
&gnu_v3_exception_catchpoint_ops);
/* We need to reset 'type' in order for code in breakpoint.c to do
the right thing. */
- cp->base.type = bp_breakpoint;
+ cp->type = bp_breakpoint;
cp->kind = ex_event;
- cp->exception_rx = except_rx;
- cp->pattern = pattern;
+ cp->exception_rx = std::move (except_rx);
+ cp->pattern = std::move (pattern);
- re_set_exception_catchpoint (&cp->base);
+ re_set_exception_catchpoint (cp.get ());
- install_breakpoint (0, &cp->base, 1);
- cp.release ();
+ install_breakpoint (0, std::move (cp), 1);
}
/* Look for an "if" token in *STRING. The "if" token must be preceded
STRING is updated to point to the "if" token, if it exists, or to
the end of the string. */
-static char *
-extract_exception_regexp (char **string)
+static std::string
+extract_exception_regexp (const char **string)
{
- char *start;
- char *last, *last_space;
+ const char *start;
+ const char *last, *last_space;
start = skip_spaces (*string);
last_space = start;
while (*last != '\0')
{
- char *if_token = last;
+ const char *if_token = last;
/* Check for the "if". */
if (check_for_argument (&if_token, "if", 2))
*string = last;
if (last_space > start)
- return savestring (start, last_space - start);
- return NULL;
+ return std::string (start, last_space - start);
+ return std::string ();
}
/* Deal with "catch catch", "catch throw", and "catch rethrow"
commands. */
static void
-catch_exception_command_1 (enum exception_event_kind ex_event, char *arg,
+catch_exception_command_1 (enum exception_event_kind ex_event,
+ const char *arg,
int tempflag, int from_tty)
{
- char *except_rx;
- char *cond_string = NULL;
- struct cleanup *cleanup;
+ const char *cond_string = NULL;
if (!arg)
arg = "";
arg = skip_spaces (arg);
- except_rx = extract_exception_regexp (&arg);
- cleanup = make_cleanup (xfree, except_rx);
+ std::string except_rx = extract_exception_regexp (&arg);
cond_string = ep_parse_optional_if_clause (&arg);
&& ex_event != EX_EVENT_RETHROW)
error (_("Unsupported or unknown exception event; cannot catch it"));
- handle_gnu_v3_exceptions (tempflag, except_rx, cond_string,
+ handle_gnu_v3_exceptions (tempflag, std::move (except_rx), cond_string,
ex_event, from_tty);
-
- discard_cleanups (cleanup);
}
/* Implementation of "catch catch" command. */
static void
-catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command)
+catch_catch_command (const char *arg, int from_tty,
+ struct cmd_list_element *command)
{
int tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
/* Implementation of "catch throw" command. */
static void
-catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command)
+catch_throw_command (const char *arg, int from_tty,
+ struct cmd_list_element *command)
{
int tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
/* Implementation of "catch rethrow" command. */
static void
-catch_rethrow_command (char *arg, int from_tty,
+catch_rethrow_command (const char *arg, int from_tty,
struct cmd_list_element *command)
{
int tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
/* GNU v3 exception catchpoints. */
ops = &gnu_v3_exception_catchpoint_ops;
*ops = bkpt_breakpoint_ops;
- ops->dtor = dtor_exception_catchpoint;
ops->re_set = re_set_exception_catchpoint;
ops->print_it = print_it_exception_catchpoint;
ops->print_one = print_one_exception_catchpoint;
ops->check_status = check_status_exception_catchpoint;
}
-initialize_file_ftype _initialize_break_catch_throw;
-
void
_initialize_break_catch_throw (void)
{
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