
This changes the probes to be independent of the program space. After this, when a probe's address is needed, it is determined by applying offsets at the point of use. This introduces a bound_probe object, similar to bound minimal symbols. Objects of this type are used when it's necessary to pass a probe and its corresponding objfile. This removes the backlink from probe to objfile, which was primarily used to fetch the architecture to use. This adds a get_probe_address function which calls a probe method to compute the probe's relocated address. Similarly, it adds an objfile parameter to the semaphore methods so they can do the relocation properly as well. 2014-03-03 Tom Tromey <tromey@redhat.com> * break-catch-throw.c (fetch_probe_arguments): Use bound probes. * breakpoint.c (create_longjmp_master_breakpoint): Use get_probe_address. (add_location_to_breakpoint, bkpt_probe_insert_location) (bkpt_probe_remove_location): Update. * breakpoint.h (struct bp_location) <probe>: Now a bound_probe. * elfread.c (elf_symfile_relocate_probe): Remove. (elf_probe_fns): Update. (insert_exception_resume_breakpoint): Change type of "probe" parameter to bound_probe. (check_exception_resume): Update. * objfiles.c (objfile_relocate1): Don't relocate probes. * probe.c (bound_probe_s): New typedef. (parse_probes): Use get_probe_address. Set sal's objfile. (find_probe_by_pc): Return a bound_probe. (collect_probes): Return a VEC(bound_probe_s). (compare_probes): Update. (gen_ui_out_table_header_info): Change type of "probes" parameter. Update. (info_probes_for_ops): Update. (get_probe_address): New function. (probe_safe_evaluate_at_pc): Update. * probe.h (struct probe_ops) <get_probe_address>: New field. <set_semaphore, clear_semaphore>: Add objfile parameter. (struct probe) <objfile>: Remove field. <arch>: New field. <address>: Update comment. (struct bound_probe): New. (find_probe_by_pc): Return a bound_probe. (get_probe_address): Declare. * solib-svr4.c (struct probe_and_action) <address>: New field. (hash_probe_and_action, equal_probe_and_action): Update. (register_solib_event_probe): Add address parameter. (solib_event_probe_at): Update. (svr4_create_probe_breakpoints): Add objfile parameter. Use get_probe_address. * stap-probe.c (struct stap_probe) <sem_addr>: Update comment. (stap_get_probe_address): New function. (stap_can_evaluate_probe_arguments, compute_probe_arg) (compile_probe_arg): Update. (stap_set_semaphore, stap_clear_semaphore): Compute semaphore's address. (handle_stap_probe): Don't relocate the probe. (stap_relocate): Remove. (stap_gen_info_probes_table_values): Update. (stap_probe_ops): Remove stap_relocate. * symfile-debug.c (debug_sym_relocate_probe): Remove. (debug_sym_probe_fns): Update. * symfile.h (struct sym_probe_fns) <sym_relocate_probe>: Remove. * symtab.c (init_sal): Use memset. * symtab.h (struct symtab_and_line) <objfile>: New field. * tracepoint.c (start_tracing, stop_tracing): Update.
592 lines
16 KiB
C
592 lines
16 KiB
C
/* Everything about catch/throw catchpoints, for GDB.
|
||
|
||
Copyright (C) 1986-2014 Free Software Foundation, Inc.
|
||
|
||
This file is part of GDB.
|
||
|
||
This program is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 3 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
||
|
||
#include "defs.h"
|
||
#include "arch-utils.h"
|
||
#include <ctype.h>
|
||
#include "breakpoint.h"
|
||
#include "gdbcmd.h"
|
||
#include "inferior.h"
|
||
#include "annotate.h"
|
||
#include "valprint.h"
|
||
#include "cli/cli-utils.h"
|
||
#include "completer.h"
|
||
#include "gdb_obstack.h"
|
||
#include "mi/mi-common.h"
|
||
#include "exceptions.h"
|
||
#include "linespec.h"
|
||
#include "probe.h"
|
||
#include "objfiles.h"
|
||
#include "cp-abi.h"
|
||
#include "gdb_regex.h"
|
||
#include "cp-support.h"
|
||
|
||
/* Enums for exception-handling support. */
|
||
enum exception_event_kind
|
||
{
|
||
EX_EVENT_THROW,
|
||
EX_EVENT_RETHROW,
|
||
EX_EVENT_CATCH
|
||
};
|
||
|
||
/* Each spot where we may place an exception-related catchpoint has
|
||
two names: the SDT probe point and the function name. This
|
||
structure holds both. */
|
||
|
||
struct exception_names
|
||
{
|
||
/* The name of the probe point to try, in the form accepted by
|
||
'parse_probes'. */
|
||
|
||
const char *probe;
|
||
|
||
/* The name of the corresponding function. */
|
||
|
||
const char *function;
|
||
};
|
||
|
||
/* Names of the probe points and functions on which to break. This is
|
||
indexed by exception_event_kind. */
|
||
static const struct exception_names exception_functions[] =
|
||
{
|
||
{ "-probe-stap libstdcxx:throw", "__cxa_throw" },
|
||
{ "-probe-stap libstdcxx:rethrow", "__cxa_rethrow" },
|
||
{ "-probe-stap libstdcxx:catch", "__cxa_begin_catch" }
|
||
};
|
||
|
||
static struct breakpoint_ops gnu_v3_exception_catchpoint_ops;
|
||
|
||
/* The type of an exception catchpoint. */
|
||
|
||
struct exception_catchpoint
|
||
{
|
||
/* 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. */
|
||
|
||
char *exception_rx;
|
||
|
||
/* If non-NULL, an xmalloc'd, compiled regular expression which is
|
||
used to determine which exceptions to stop on. */
|
||
|
||
regex_t *pattern;
|
||
};
|
||
|
||
|
||
|
||
/* A helper function that fetches exception probe arguments. This
|
||
fills in *ARG0 (if non-NULL) and *ARG1 (which must be non-NULL).
|
||
It will throw an exception on any kind of failure. */
|
||
|
||
static void
|
||
fetch_probe_arguments (struct value **arg0, struct value **arg1)
|
||
{
|
||
struct frame_info *frame = get_selected_frame (_("No frame selected"));
|
||
CORE_ADDR pc = get_frame_pc (frame);
|
||
struct bound_probe pc_probe;
|
||
const struct sym_probe_fns *pc_probe_fns;
|
||
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))
|
||
error (_("not stopped at a C++ exception catchpoint"));
|
||
|
||
n_args = get_probe_argument_count (pc_probe.probe, 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);
|
||
|
||
if ((arg0 != NULL && *arg0 == NULL) || *arg1 == NULL)
|
||
error (_("error computing probe argument at c++ exception catchpoint"));
|
||
}
|
||
|
||
|
||
|
||
/* A helper function that returns a value indicating the kind of the
|
||
exception catchpoint B. */
|
||
|
||
static enum exception_event_kind
|
||
classify_exception_breakpoint (struct breakpoint *b)
|
||
{
|
||
struct exception_catchpoint *cp = (struct exception_catchpoint *) b;
|
||
|
||
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
|
||
check_status_exception_catchpoint (struct bpstats *bs)
|
||
{
|
||
struct exception_catchpoint *self
|
||
= (struct exception_catchpoint *) bs->breakpoint_at;
|
||
char *typename = NULL;
|
||
volatile struct gdb_exception e;
|
||
|
||
bkpt_breakpoint_ops.check_status (bs);
|
||
if (bs->stop == 0)
|
||
return;
|
||
|
||
if (self->pattern == NULL)
|
||
return;
|
||
|
||
TRY_CATCH (e, RETURN_MASK_ERROR)
|
||
{
|
||
struct value *typeinfo_arg;
|
||
char *canon;
|
||
|
||
fetch_probe_arguments (NULL, &typeinfo_arg);
|
||
typename = cplus_typename_from_type_info (typeinfo_arg);
|
||
|
||
canon = cp_canonicalize_string (typename);
|
||
if (canon != NULL)
|
||
{
|
||
xfree (typename);
|
||
typename = canon;
|
||
}
|
||
}
|
||
|
||
if (e.reason < 0)
|
||
exception_print (gdb_stderr, e);
|
||
else if (regexec (self->pattern, typename, 0, NULL, 0) != 0)
|
||
bs->stop = 0;
|
||
|
||
xfree (typename);
|
||
}
|
||
|
||
/* Implement the 're_set' method. */
|
||
|
||
static void
|
||
re_set_exception_catchpoint (struct breakpoint *self)
|
||
{
|
||
struct symtabs_and_lines sals = {0};
|
||
struct symtabs_and_lines sals_end = {0};
|
||
volatile struct gdb_exception e;
|
||
struct cleanup *cleanup;
|
||
enum exception_event_kind kind = classify_exception_breakpoint (self);
|
||
int pass;
|
||
|
||
for (pass = 0; sals.sals == NULL && pass < 2; ++pass)
|
||
{
|
||
TRY_CATCH (e, RETURN_MASK_ERROR)
|
||
{
|
||
char *spec;
|
||
|
||
if (pass == 0)
|
||
{
|
||
spec = ASTRDUP (exception_functions[kind].probe);
|
||
sals = parse_probes (&spec, NULL);
|
||
}
|
||
else
|
||
{
|
||
spec = ASTRDUP (exception_functions[kind].function);
|
||
self->ops->decode_linespec (self, &spec, &sals);
|
||
}
|
||
}
|
||
/* NOT_FOUND_ERROR just means the breakpoint will be pending, so
|
||
let it through. */
|
||
if (e.reason < 0 && e.error != NOT_FOUND_ERROR)
|
||
throw_exception (e);
|
||
}
|
||
|
||
cleanup = make_cleanup (xfree, sals.sals);
|
||
update_breakpoint_locations (self, sals, sals_end);
|
||
do_cleanups (cleanup);
|
||
}
|
||
|
||
static enum print_stop_action
|
||
print_it_exception_catchpoint (bpstat bs)
|
||
{
|
||
struct ui_out *uiout = current_uiout;
|
||
struct breakpoint *b = bs->breakpoint_at;
|
||
int bp_temp;
|
||
enum exception_event_kind kind = classify_exception_breakpoint (b);
|
||
|
||
annotate_catchpoint (b->number);
|
||
|
||
bp_temp = b->disposition == disp_del;
|
||
ui_out_text (uiout,
|
||
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), "
|
||
: (kind == EX_EVENT_CATCH ? " (exception caught), "
|
||
: " (exception rethrown), ")));
|
||
if (ui_out_is_mi_like_p (uiout))
|
||
{
|
||
ui_out_field_string (uiout, "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);
|
||
}
|
||
return PRINT_SRC_AND_LOC;
|
||
}
|
||
|
||
static void
|
||
print_one_exception_catchpoint (struct breakpoint *b,
|
||
struct bp_location **last_loc)
|
||
{
|
||
struct value_print_options opts;
|
||
struct ui_out *uiout = current_uiout;
|
||
enum exception_event_kind kind = classify_exception_breakpoint (b);
|
||
|
||
get_user_print_options (&opts);
|
||
if (opts.addressprint)
|
||
{
|
||
annotate_field (4);
|
||
if (b->loc == NULL || b->loc->shlib_disabled)
|
||
ui_out_field_string (uiout, "addr", "<PENDING>");
|
||
else
|
||
ui_out_field_core_addr (uiout, "addr",
|
||
b->loc->gdbarch, b->loc->address);
|
||
}
|
||
annotate_field (5);
|
||
if (b->loc)
|
||
*last_loc = b->loc;
|
||
|
||
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");
|
||
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");
|
||
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");
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Implement the 'print_one_detail' method. */
|
||
|
||
static void
|
||
print_one_detail_exception_catchpoint (const struct breakpoint *b,
|
||
struct ui_out *uiout)
|
||
{
|
||
const struct exception_catchpoint *cp
|
||
= (const struct exception_catchpoint *) b;
|
||
|
||
if (cp->exception_rx != NULL)
|
||
{
|
||
ui_out_text (uiout, _("\tmatching: "));
|
||
ui_out_field_string (uiout, "regexp", cp->exception_rx);
|
||
ui_out_text (uiout, "\n");
|
||
}
|
||
}
|
||
|
||
static void
|
||
print_mention_exception_catchpoint (struct breakpoint *b)
|
||
{
|
||
struct ui_out *uiout = current_uiout;
|
||
int bp_temp;
|
||
enum exception_event_kind kind = classify_exception_breakpoint (b);
|
||
|
||
bp_temp = b->disposition == disp_del;
|
||
ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ")
|
||
: _("Catchpoint "));
|
||
ui_out_field_int (uiout, "bkptno", b->number);
|
||
ui_out_text (uiout, (kind == EX_EVENT_THROW ? _(" (throw)")
|
||
: (kind == EX_EVENT_CATCH ? _(" (catch)")
|
||
: _(" (rethrow)"))));
|
||
}
|
||
|
||
/* Implement the "print_recreate" breakpoint_ops method for throw and
|
||
catch catchpoints. */
|
||
|
||
static void
|
||
print_recreate_exception_catchpoint (struct breakpoint *b,
|
||
struct ui_file *fp)
|
||
{
|
||
int bp_temp;
|
||
enum exception_event_kind kind = classify_exception_breakpoint (b);
|
||
|
||
bp_temp = b->disposition == disp_del;
|
||
fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch ");
|
||
switch (kind)
|
||
{
|
||
case EX_EVENT_THROW:
|
||
fprintf_unfiltered (fp, "throw");
|
||
break;
|
||
case EX_EVENT_CATCH:
|
||
fprintf_unfiltered (fp, "catch");
|
||
break;
|
||
case EX_EVENT_RETHROW:
|
||
fprintf_unfiltered (fp, "rethrow");
|
||
break;
|
||
}
|
||
print_recreate_thread (b, fp);
|
||
}
|
||
|
||
static void
|
||
handle_gnu_v3_exceptions (int tempflag, char *except_rx, char *cond_string,
|
||
enum exception_event_kind ex_event, int from_tty)
|
||
{
|
||
struct exception_catchpoint *cp;
|
||
struct cleanup *cleanup = make_cleanup (null_cleanup, NULL);
|
||
regex_t *pattern = NULL;
|
||
|
||
if (except_rx != NULL)
|
||
{
|
||
pattern = XNEW (regex_t);
|
||
make_cleanup (xfree, pattern);
|
||
|
||
compile_rx_or_error (pattern, except_rx,
|
||
_("invalid type-matching regexp"));
|
||
}
|
||
|
||
cp = XCNEW (struct exception_catchpoint);
|
||
make_cleanup (xfree, cp);
|
||
|
||
init_catchpoint (&cp->base, 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->kind = ex_event;
|
||
cp->exception_rx = except_rx;
|
||
cp->pattern = pattern;
|
||
|
||
re_set_exception_catchpoint (&cp->base);
|
||
|
||
install_breakpoint (0, &cp->base, 1);
|
||
discard_cleanups (cleanup);
|
||
}
|
||
|
||
/* Look for an "if" token in *STRING. The "if" token must be preceded
|
||
by whitespace.
|
||
|
||
If there is any non-whitespace text between *STRING and the "if"
|
||
token, then it is returned in a newly-xmalloc'd string. Otherwise,
|
||
this returns NULL.
|
||
|
||
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)
|
||
{
|
||
char *start;
|
||
char *last, *last_space;
|
||
|
||
start = skip_spaces (*string);
|
||
|
||
last = start;
|
||
last_space = start;
|
||
while (*last != '\0')
|
||
{
|
||
char *if_token = last;
|
||
|
||
/* Check for the "if". */
|
||
if (check_for_argument (&if_token, "if", 2))
|
||
break;
|
||
|
||
/* No "if" token here. Skip to the next word start. */
|
||
last_space = skip_to_space (last);
|
||
last = skip_spaces (last_space);
|
||
}
|
||
|
||
*string = last;
|
||
if (last_space > start)
|
||
return savestring (start, last_space - start);
|
||
return NULL;
|
||
}
|
||
|
||
/* Deal with "catch catch", "catch throw", and "catch rethrow"
|
||
commands. */
|
||
|
||
static void
|
||
catch_exception_command_1 (enum exception_event_kind ex_event, char *arg,
|
||
int tempflag, int from_tty)
|
||
{
|
||
char *except_rx;
|
||
char *cond_string = NULL;
|
||
struct cleanup *cleanup;
|
||
|
||
if (!arg)
|
||
arg = "";
|
||
arg = skip_spaces (arg);
|
||
|
||
except_rx = extract_exception_regexp (&arg);
|
||
cleanup = make_cleanup (xfree, except_rx);
|
||
|
||
cond_string = ep_parse_optional_if_clause (&arg);
|
||
|
||
if ((*arg != '\0') && !isspace (*arg))
|
||
error (_("Junk at end of arguments."));
|
||
|
||
if (ex_event != EX_EVENT_THROW
|
||
&& ex_event != EX_EVENT_CATCH
|
||
&& ex_event != EX_EVENT_RETHROW)
|
||
error (_("Unsupported or unknown exception event; cannot catch it"));
|
||
|
||
handle_gnu_v3_exceptions (tempflag, 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)
|
||
{
|
||
int tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
|
||
|
||
catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty);
|
||
}
|
||
|
||
/* Implementation of "catch throw" command. */
|
||
|
||
static void
|
||
catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command)
|
||
{
|
||
int tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
|
||
|
||
catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty);
|
||
}
|
||
|
||
/* Implementation of "catch rethrow" command. */
|
||
|
||
static void
|
||
catch_rethrow_command (char *arg, int from_tty,
|
||
struct cmd_list_element *command)
|
||
{
|
||
int tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
|
||
|
||
catch_exception_command_1 (EX_EVENT_RETHROW, arg, tempflag, from_tty);
|
||
}
|
||
|
||
|
||
|
||
/* Implement the 'make_value' method for the $_exception
|
||
internalvar. */
|
||
|
||
static struct value *
|
||
compute_exception (struct gdbarch *argc, struct internalvar *var, void *ignore)
|
||
{
|
||
struct value *arg0, *arg1;
|
||
struct type *obj_type;
|
||
|
||
fetch_probe_arguments (&arg0, &arg1);
|
||
|
||
/* ARG0 is a pointer to the exception object. ARG1 is a pointer to
|
||
the std::type_info for the exception. Now we find the type from
|
||
the type_info and cast the result. */
|
||
obj_type = cplus_type_from_type_info (arg1);
|
||
return value_ind (value_cast (make_pointer_type (obj_type, NULL), arg0));
|
||
}
|
||
|
||
/* Implementation of the '$_exception' variable. */
|
||
|
||
static const struct internalvar_funcs exception_funcs =
|
||
{
|
||
compute_exception,
|
||
NULL,
|
||
NULL
|
||
};
|
||
|
||
|
||
|
||
static void
|
||
initialize_throw_catchpoint_ops (void)
|
||
{
|
||
struct breakpoint_ops *ops;
|
||
|
||
initialize_breakpoint_ops ();
|
||
|
||
/* 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->print_mention = print_mention_exception_catchpoint;
|
||
ops->print_recreate = print_recreate_exception_catchpoint;
|
||
ops->print_one_detail = print_one_detail_exception_catchpoint;
|
||
ops->check_status = check_status_exception_catchpoint;
|
||
}
|
||
|
||
initialize_file_ftype _initialize_break_catch_throw;
|
||
|
||
void
|
||
_initialize_break_catch_throw (void)
|
||
{
|
||
initialize_throw_catchpoint_ops ();
|
||
|
||
/* Add catch and tcatch sub-commands. */
|
||
add_catch_command ("catch", _("\
|
||
Catch an exception, when caught."),
|
||
catch_catch_command,
|
||
NULL,
|
||
CATCH_PERMANENT,
|
||
CATCH_TEMPORARY);
|
||
add_catch_command ("throw", _("\
|
||
Catch an exception, when thrown."),
|
||
catch_throw_command,
|
||
NULL,
|
||
CATCH_PERMANENT,
|
||
CATCH_TEMPORARY);
|
||
add_catch_command ("rethrow", _("\
|
||
Catch an exception, when rethrown."),
|
||
catch_rethrow_command,
|
||
NULL,
|
||
CATCH_PERMANENT,
|
||
CATCH_TEMPORARY);
|
||
|
||
create_internalvar_type_lazy ("_exception", &exception_funcs, NULL);
|
||
}
|