//
// Do_Breakpoint_Throws: C
//
// A call to Do_Breakpoint_Throws does delegation to a hook in the host, which
// (if registered) will generally start an interactive session for probing the
// environment at the break. The `resume` native cooperates by being able to
// give back a value (or give back code to run to produce a value) that the
// call to breakpoint returns.
//
// RESUME has another feature, which is to be able to actually unwind and
// simulate a return /AT a function *further up the stack*. (This may be
// switched to a feature of a "STEP OUT" command at some point.)
//
REBOOL Do_Breakpoint_Throws(
REBVAL *out,
REBOOL interrupted, // Ctrl-C (as opposed to a BREAKPOINT)
const REBVAL *default_value,
REBOOL do_default
) {
REBVAL *target = NONE_VALUE;
REBVAL temp;
VAL_INIT_WRITABLE_DEBUG(&temp);
if (!PG_Breakpoint_Quitting_Hook) {
//
// Host did not register any breakpoint handler, so raise an error
// about this as early as possible.
//
fail (Error(RE_HOST_NO_BREAKPOINT));
}
// We call the breakpoint hook in a loop, in order to keep running if any
// inadvertent FAILs or THROWs occur during the interactive session.
// Only a conscious call of RESUME speaks the protocol to break the loop.
//
while (TRUE) {
struct Reb_State state;
REBCTX *error;
push_trap:
PUSH_TRAP(&error, &state);
// The host may return a block of code to execute, but cannot
// while evaluating do a THROW or a FAIL that causes an effective
// "resumption". Halt is the exception, hence we PUSH_TRAP and
// not PUSH_UNHALTABLE_TRAP. QUIT is also an exception, but a
// desire to quit is indicated by the return value of the breakpoint
// hook (which may or may not decide to request a quit based on the
// QUIT command being run).
//
// The core doesn't want to get involved in presenting UI, so if
// an error makes it here and wasn't trapped by the host first that
// is a bug in the host. It should have done its own PUSH_TRAP.
//
if (error) {
#if !defined(NDEBUG)
REBVAL error_value;
VAL_INIT_WRITABLE_DEBUG(&error_value);
Val_Init_Error(&error_value, error);
PROBE_MSG(&error_value, "Error not trapped during breakpoint:");
Panic_Array(CTX_VARLIST(error));
#endif
// In release builds, if an error managed to leak out of the
// host's breakpoint hook somehow...just re-push the trap state
// and try it again.
//
goto push_trap;
}
// Call the host's breakpoint hook.
//
if (PG_Breakpoint_Quitting_Hook(&temp, interrupted)) {
//
// If a breakpoint hook returns TRUE that means it wants to quit.
// The value should be the /WITH value (as in QUIT/WITH)
//
assert(!THROWN(&temp));
*out = *ROOT_QUIT_NATIVE;
CONVERT_NAME_TO_THROWN(out, &temp, FALSE);
return TRUE; // TRUE = threw
}
// If a breakpoint handler returns FALSE, then it should have passed
// back a "resume instruction" triggered by a call like:
//
// resume/do [fail "This is how to fail from a breakpoint"]
//
// So now that the handler is done, we will allow any code handed back
// to do whatever FAIL it likes vs. trapping that here in a loop.
//
DROP_TRAP_SAME_STACKLEVEL_AS_PUSH(&state);
// Decode and process the "resume instruction"
{
struct Reb_Frame *frame;
REBVAL *mode;
REBVAL *payload;
assert(IS_GROUP(&temp));
assert(VAL_LEN_HEAD(&temp) == RESUME_INST_MAX);
mode = VAL_ARRAY_AT_HEAD(&temp, RESUME_INST_MODE);
payload = VAL_ARRAY_AT_HEAD(&temp, RESUME_INST_PAYLOAD);
target = VAL_ARRAY_AT_HEAD(&temp, RESUME_INST_TARGET);
// The first thing we need to do is determine if the target we
// want to return to has another breakpoint sandbox blocking
// us. If so, what we need to do is actually retransmit the
// resume instruction so it can break that wall, vs. transform
// it into an EXIT/FROM that would just get intercepted.
//
if (!IS_NONE(target)) {
#if !defined(NDEBUG)
REBOOL found = FALSE;
#endif
for (frame = FS_TOP; frame != NULL; frame = frame->prior) {
if (frame->mode != CALL_MODE_FUNCTION)
continue;
if (
frame != FS_TOP
&& FUNC_CLASS(frame->func) == FUNC_CLASS_NATIVE
&& (
FUNC_CODE(frame->func) == &N_pause
|| FUNC_CODE(frame->func) == &N_breakpoint
)
) {
// We hit a breakpoint (that wasn't this call to
// breakpoint, at the current FS_TOP) before finding
// the sought after target. Retransmit the resume
// instruction so that level will get it instead.
//
*out = *ROOT_RESUME_NATIVE;
CONVERT_NAME_TO_THROWN(out, &temp, FALSE);
return TRUE; // TRUE = thrown
}
if (IS_FRAME(target)) {
if (NOT(frame->flags & DO_FLAG_FRAME_CONTEXT))
continue;
if (
VAL_CONTEXT(target)
== AS_CONTEXT(frame->data.context)
) {
// Found a closure matching the target before we
// reached a breakpoint, no need to retransmit.
//
#if !defined(NDEBUG)
found = TRUE;
#endif
break;
}
}
else {
assert(IS_FUNCTION(target));
if (frame->flags & DO_FLAG_FRAME_CONTEXT)
continue;
if (VAL_FUNC(target) == frame->func) {
//
// Found a function matching the target before we
// reached a breakpoint, no need to retransmit.
//
#if !defined(NDEBUG)
found = TRUE;
#endif
break;
}
}
}
// RESUME should not have been willing to use a target that
// is not on the stack.
//
#if !defined(NDEBUG)
assert(found);
#endif
}
if (IS_NONE(mode)) {
//
// If the resume instruction had no /DO or /WITH of its own,
// then it doesn't override whatever the breakpoint provided
// as a default. (If neither the breakpoint nor the resume
// provided a /DO or a /WITH, result will be UNSET.)
//
goto return_default; // heeds `target`
}
assert(IS_LOGIC(mode));
if (VAL_LOGIC(mode)) {
if (DO_VAL_ARRAY_AT_THROWS(&temp, payload)) {
//
// Throwing is not compatible with /AT currently.
//
if (!IS_NONE(target))
fail (Error_No_Catch_For_Throw(&temp));
// Just act as if the BREAKPOINT call itself threw
//
*out = temp;
return TRUE; // TRUE = thrown
}
// Ordinary evaluation result...
}
else
temp = *payload;
}
// The resume instruction will be GC'd.
//
goto return_temp;
}
DEAD_END;
return_default:
if (do_default) {
if (DO_VAL_ARRAY_AT_THROWS(&temp, default_value)) {
//
// If the code throws, we're no longer in the sandbox...so we
// bubble it up. Note that breakpoint runs this code at its
// level... so even if you request a higher target, any throws
// will be processed as if they originated at the BREAKPOINT
// frame. To do otherwise would require the EXIT/FROM protocol
// to add support for DO-ing at the receiving point.
//
*out = temp;
return TRUE; // TRUE = thrown
}
}
else
temp = *default_value; // generally UNSET! if no /WITH
return_temp:
// The easy case is that we just want to return from breakpoint
// directly, signaled by the target being NONE!.
//
if (IS_NONE(target)) {
*out = temp;
return FALSE; // FALSE = not thrown
}
// If the target is a function, then we're looking to simulate a return
// from something up the stack. This uses the same mechanic as
// definitional returns--a throw named by the function or closure frame.
//
// !!! There is a weak spot in definitional returns for FUNCTION! that
// they can only return to the most recent invocation; which is a weak
// spot of FUNCTION! in general with stack relative variables. Also,
// natives do not currently respond to definitional returns...though
// they can do so just as well as FUNCTION! can.
//
*out = *target;
CONVERT_NAME_TO_THROWN(out, &temp, TRUE);
return TRUE; // TRUE = thrown
}
//
// Panic_Core: C
//
// (va_list by pointer: http://stackoverflow.com/a/3369762/211160)
//
// Print a failure message and abort. The code adapts to several
// different load stages of the system, and uses simpler ways to
// report the error when the boot has not progressed enough to
// use the more advanced modes. This allows the same interface
// to be used for `panic Error_XXX(...)` and `fail (Error_XXX(...))`.
//
ATTRIBUTE_NO_RETURN void Panic_Core(REBCNT id, REBSER *maybe_frame, va_list *args)
{
char title[PANIC_TITLE_SIZE];
char message[PANIC_MESSAGE_SIZE];
title[0] = '\0';
message[0] = '\0';
if (maybe_frame) {
assert(id == 0);
id = ERR_NUM(maybe_frame);
}
// We are crashing, so a legitimate time to be disabling the garbage
// collector. (It won't be turned back on.)
GC_Disabled++;
if (Reb_Opts && Reb_Opts->crash_dump) {
Dump_Info();
Dump_Stack(0, 0);
}
strncat(title, "PANIC #", PANIC_TITLE_SIZE - 1);
Form_Int(b_cast(title + strlen(title)), id); // !!! no bounding...
strncat(message, Str_Panic_Directions, PANIC_MESSAGE_SIZE - 1);
#if !defined(NDEBUG)
// In debug builds, we may have the file and line number to report if
// the call to Panic_Core originated from the `panic` macro. But we
// will not if the panic is being called from a Make_Error call that
// is earlier than errors can be made...
if (TG_Erroring_C_File) {
Form_Args(
b_cast(message + strlen(message)),
PANIC_MESSAGE_SIZE - 1 - strlen(message),
"C Source File %s, Line %d\n",
TG_Erroring_C_File,
TG_Erroring_C_Line,
NULL
);
}
#endif
if (PG_Boot_Phase < BOOT_LOADED) {
strncat(message, title, PANIC_MESSAGE_SIZE - 1);
strncat(
message,
"\n** Boot Error: (string table not decompressed yet)",
PANIC_MESSAGE_SIZE - 1
);
}
else if (PG_Boot_Phase < BOOT_ERRORS && id < RE_INTERNAL_MAX) {
// We are panic'ing on one of the errors that can occur during
// boot (e.g. before Make_Error() be assured to run). So we use
// the C string constant that was formed by %make-boot.r and
// compressed in the boot block.
//
// Note: These strings currently do not allow arguments.
const char *format =
cs_cast(BOOT_STR(RS_ERROR, id - RE_INTERNAL_FIRST));
assert(args && !maybe_frame);
strncat(message, "\n** Boot Error: ", PANIC_MESSAGE_SIZE - 1);
Form_Args_Core(
b_cast(message + strlen(message)),
PANIC_MESSAGE_SIZE - 1 - strlen(message),
format,
args
);
}
else if (PG_Boot_Phase < BOOT_ERRORS && id >= RE_INTERNAL_MAX) {
strncat(message, title, PANIC_MESSAGE_SIZE - 1);
strncat(
message,
"\n** Boot Error: (error object table not initialized yet)",
PANIC_MESSAGE_SIZE - 1
);
}
else {
// The system should be theoretically able to make and mold errors.
//
// !!! If you're trying to panic *during* error molding this
// is obviously not going to not work. All errors pertaining to
// molding errors should audited to be in the Boot: category.
REBVAL error;
if (maybe_frame) {
assert(!args);
Val_Init_Error(&error, maybe_frame);
}
else {
// We aren't explicitly passed a Rebol ERROR! object, but we
// consider it "safe" to make one since we're past BOOT_ERRORS
Val_Init_Error(&error, Make_Error_Core(id, args));
}
Form_Args(
b_cast(message + strlen(message)),
PANIC_MESSAGE_SIZE - 1 - strlen(message),
"%v",
&error,
NULL
);
}
OS_CRASH(cb_cast(Str_Panic_Title), cb_cast(message));
// Note that since we crash, we never return so that the caller can run
// a va_end on the passed-in args. This is illegal in the general case:
//
// http://stackoverflow.com/a/587139/211160
DEAD_END;
}
//
// RL_Start: C
//
// Evaluate the default boot function.
//
// Returns:
// Zero on success, otherwise indicates an error occurred.
// Arguments:
// bin - optional startup code (compressed), can be null
// len - length of above bin
// flags - special flags
// Notes:
// This function completes the startup sequence by calling
// the sys/start function.
//
RL_API int RL_Start(REBYTE *bin, REBINT len, REBYTE *script, REBINT script_len, REBCNT flags)
{
REBVAL *val;
REBSER *ser;
struct Reb_State state;
REBCTX *error;
int error_num;
REBVAL result;
VAL_INIT_WRITABLE_DEBUG(&result);
if (bin) {
ser = Decompress(bin, len, -1, FALSE, FALSE);
if (!ser) return 1;
val = CTX_VAR(Sys_Context, SYS_CTX_BOOT_HOST);
Val_Init_Binary(val, ser);
}
if (script && script_len > 4) {
/* a 4-byte long payload type at the beginning */
i32 ptype = 0;
REBYTE *data = script + sizeof(ptype);
script_len -= sizeof(ptype);
memcpy(&ptype, script, sizeof(ptype));
if (ptype == 1) {/* COMPRESSed data */
ser = Decompress(data, script_len, -1, FALSE, FALSE);
} else {
ser = Make_Binary(script_len);
if (ser == NULL) {
OS_FREE(script);
return 1;
}
memcpy(BIN_HEAD(ser), data, script_len);
}
OS_FREE(script);
val = CTX_VAR(Sys_Context, SYS_CTX_BOOT_EMBEDDED);
Val_Init_Binary(val, ser);
}
PUSH_UNHALTABLE_TRAP(&error, &state);
// The first time through the following code 'error' will be NULL, but...
// `fail` can longjmp here, so 'error' won't be NULL *if* that happens!
if (error) {
//
// !!! We are not allowed to ask for a print operation that can take
// arbitrarily long without allowing for cancellation via Ctrl-C,
// but here we are wanting to print an error. If you're printing
// out an error and get a halt, it won't print the halt.
//
REBCTX *halt_error;
// Save error for WHY?
//
REBVAL *last = Get_System(SYS_STATE, STATE_LAST_ERROR);
Val_Init_Error(last, error);
PUSH_UNHALTABLE_TRAP(&halt_error, &state);
// The first time through the following code 'error' will be NULL, but...
// `fail` can longjmp here, so 'error' won't be NULL *if* that happens!
if (halt_error) {
assert(ERR_NUM(halt_error) == RE_HALT);
return ERR_NUM(halt_error);
}
Print_Value(last, 1024, FALSE);
DROP_TRAP_SAME_STACKLEVEL_AS_PUSH(&state);
// !!! When running in a script, whether or not the Rebol interpreter
// just exits in an error case with a bad error code or breaks you
// into the console to debug the environment should be controlled by
// a command line option. Defaulting to returning an error code
// seems better, because kicking into an interactive session can
// cause logging systems to hang.
// For RE_HALT and all other errors we return the error
// number. Error numbers are not set in stone (currently), but
// are never zero...which is why we can use 0 for success.
//
return ERR_NUM(error);
}
if (Apply_Only_Throws(
&result, Sys_Func(SYS_CTX_FINISH_RL_START), END_VALUE
)) {
#if !defined(NDEBUG)
if (LEGACY(OPTIONS_EXIT_FUNCTIONS_ONLY))
fail (Error_No_Catch_For_Throw(&result));
#endif
if (
IS_FUNCTION_AND(&result, FUNC_CLASS_NATIVE) && (
VAL_FUNC_CODE(&result) == &N_quit
|| VAL_FUNC_CODE(&result) == &N_exit
)
) {
int status;
CATCH_THROWN(&result, &result);
status = Exit_Status_From_Value(&result);
DROP_TRAP_SAME_STACKLEVEL_AS_PUSH(&state);
Shutdown_Core();
OS_EXIT(status);
DEAD_END;
}
fail (Error_No_Catch_For_Throw(&result));
}
DROP_TRAP_SAME_STACKLEVEL_AS_PUSH(&state);
// The convention in the API was to return 0 for success. We use the
// convention (as for FINISH_INIT_CORE) that any non-UNSET! result from
// FINISH_RL_START indicates something went wrong.
if (IS_UNSET(&result))
error_num = 0; // no error
else {
assert(FALSE); // should not happen (raise an error instead)
Debug_Fmt("** finish-rl-start returned non-NONE!:");
Debug_Fmt("%r", &result);
error_num = RE_MISC;
}
return error_num;
}
//
// RL_Do_String: C
//
// Load a string and evaluate the resulting block.
//
// Returns:
// The datatype of the result if a positive number (or 0 if the
// type has no representation in the "RXT" API). An error code
// if it's a negative number. Two negative numbers are reserved
// for non-error conditions: -1 for halting (e.g. Escape), and
// -2 is reserved for exiting with exit_status set.
//
// Arguments:
// text - A null terminated UTF-8 (or ASCII) string to transcode
// into a block and evaluate.
// flags - set to zero for now
// result - value returned from evaluation, if NULL then result
// will be returned on the top of the stack
//
// Notes:
// This API was from before Rebol's open sourcing and had little
// vetting and few clients. The one client it did have was the
// "sample" console code (which wound up being the "only"
// console code for quite some time).
//
RL_API int RL_Do_String(
int *exit_status,
const REBYTE *text,
REBCNT flags,
RXIARG *out
) {
REBARR *code;
struct Reb_State state;
REBCTX *error;
REBVAL result;
VAL_INIT_WRITABLE_DEBUG(&result);
// assumes it can only be run at the topmost level where
// the data stack is completely empty.
//
assert(DSP == 0);
PUSH_UNHALTABLE_TRAP(&error, &state);
// The first time through the following code 'error' will be NULL, but...
// `fail` can longjmp here, so 'error' won't be NULL *if* that happens!
if (error) {
// Save error for WHY?
REBVAL *last = Get_System(SYS_STATE, STATE_LAST_ERROR);
Val_Init_Error(last, error);
if (ERR_NUM(error) == RE_HALT)
return -1; // !!! Revisit hardcoded #
if (out)
Value_To_RXI(out, last);
else
DS_PUSH(last);
return -ERR_NUM(error);
}
code = Scan_Source(text, LEN_BYTES(text));
PUSH_GUARD_ARRAY(code);
// Bind into lib or user spaces?
if (flags) {
// Top words will be added to lib:
Bind_Values_Set_Midstream_Shallow(ARR_HEAD(code), Lib_Context);
Bind_Values_Deep(ARR_HEAD(code), Lib_Context);
}
else {
REBCTX *user = VAL_CONTEXT(Get_System(SYS_CONTEXTS, CTX_USER));
REBVAL vali;
VAL_INIT_WRITABLE_DEBUG(&vali);
SET_INTEGER(&vali, CTX_LEN(user) + 1);
Bind_Values_All_Deep(ARR_HEAD(code), user);
Resolve_Context(user, Lib_Context, &vali, FALSE, FALSE);
}
if (Do_At_Throws(&result, code, 0)) {
DROP_GUARD_ARRAY(code);
if (
IS_FUNCTION_AND(&result, FUNC_CLASS_NATIVE) && (
VAL_FUNC_CODE(&result) == &N_quit
|| VAL_FUNC_CODE(&result) == &N_exit
)
) {
CATCH_THROWN(&result, &result);
DROP_TRAP_SAME_STACKLEVEL_AS_PUSH(&state);
*exit_status = Exit_Status_From_Value(&result);
return -2; // Revisit hardcoded #
}
fail (Error_No_Catch_For_Throw(&result));
}
DROP_GUARD_ARRAY(code);
DROP_TRAP_SAME_STACKLEVEL_AS_PUSH(&state);
if (out)
Value_To_RXI(out, &result);
else
DS_PUSH(&result);
return Reb_To_RXT[VAL_TYPE_0(&result)];
}
//
// Do_String()
//
// This is a version of a routine that was offered by the RL_Api, which has
// been expanded here in order to permit the necessary customizations for
// interesting REPL behavior w.r.t. binding, error handling, and response
// to throws.
//
// !!! Now that this code has been moved into the host, the convoluted
// integer-return-scheme can be eliminated and the code integrated more
// clearly into the surrounding calls.
//
int Do_String(
int *exit_status,
REBVAL *out,
const REBYTE *text,
REBOOL at_breakpoint
) {
struct Reb_State state;
REBCTX *error;
// Breakpoint REPLs are nested, and we may wish to jump out of them to
// the topmost level via a HALT. However, all other errors need to be
// confined, so that if one is doing evaluations during the pause of
// a breakpoint an error doesn't "accidentally resume" by virtue of
// jumping the stack out of the REPL.
//
// The topmost layer REPL, however, needs to catch halts in order to
// keep control and not crash out.
//
if (at_breakpoint)
PUSH_TRAP(&error, &state);
else
PUSH_UNHALTABLE_TRAP(&error, &state);
// The first time through the following code 'error' will be NULL, but...
// `fail` can longjmp here, so 'error' won't be NULL *if* that happens!
if (error) {
// Save error for WHY?
REBVAL *last = Get_System(SYS_STATE, STATE_LAST_ERROR);
if (ERR_NUM(error) == RE_HALT) {
assert(!at_breakpoint);
return -1; // !!! Revisit hardcoded #
}
Val_Init_Error(out, error);
*last = *out;
return -cast(REBINT, ERR_NUM(error));
}
REBARR *code = Scan_UTF8_Managed(text, LEN_BYTES(text));
// Where code ends up being bound when loaded at the REPL prompt should
// be more generally configurable. (It may be, for instance, that one
// wants to run something with it not bound at all.) Such choices
// must come from this REPL host...not from the interpreter itself.
{
// First the scanned code is bound into the user context with a
// fallback to the lib context.
//
// !!! This code is very old, and is how the REPL has bound since
// R3-Alpha. It comes from RL_Do_String, but should receive a modern
// review of why it's written exactly this way.
//
REBCTX *user_ctx = VAL_CONTEXT(Get_System(SYS_CONTEXTS, CTX_USER));
REBVAL vali;
SET_INTEGER(&vali, CTX_LEN(user_ctx) + 1);
Bind_Values_All_Deep(ARR_HEAD(code), user_ctx);
Resolve_Context(user_ctx, Lib_Context, &vali, FALSE, FALSE);
// If we're stopped at a breakpoint, the REPL should have a concept
// of what stack level it is inspecting (conveyed by the |#|>> in the
// prompt). This does a binding pass using the function for that
// stack level, just the way a body is bound during Make_Function()
//
if (at_breakpoint) {
REBVAL level;
SET_INTEGER(&level, HG_Stack_Level);
REBFRM *frame = Frame_For_Stack_Level(NULL, &level, FALSE);
assert(frame);
// Need to manage because it may be no words get bound into it,
// and we're not putting it into a FRAME! value, so it might leak
// otherwise if it's reified.
//
REBCTX *frame_ctx = Context_For_Frame_May_Reify_Managed(frame);
Bind_Values_Deep(ARR_HEAD(code), frame_ctx);
}
// !!! This was unused code that used to be in Do_String from
// RL_Api. It was an alternative path under `flags` which said
// "Bind into lib or user spaces?" and then "Top words will be
// added to lib". Is it relevant in any way?
//
/* Bind_Values_Set_Midstream_Shallow(ARR_HEAD(code), Lib_Context);
Bind_Values_Deep(ARR_HEAD(code), Lib_Context); */
}
if (Do_At_Throws(out, code, 0, SPECIFIED)) { // `code` will be GC protected
if (at_breakpoint) {
if (
IS_FUNCTION(out)
&& VAL_FUNC_DISPATCHER(out) == &N_resume
) {
//
// This means we're done with the embedded REPL. We want to
// resume and may be returning a piece of code that will be
// run by the finishing BREAKPOINT command in the target
// environment.
//
// We'll never return a halt, so we reuse -1 (in this very
// temporary scheme built on the very clunky historical REPL,
// which will not last much longer...fingers crossed.)
//
DROP_TRAP_SAME_STACKLEVEL_AS_PUSH(&state);
CATCH_THROWN(out, out);
*exit_status = -1;
return -1;
}
if (
IS_FUNCTION(out)
&& VAL_FUNC_DISPATCHER(out) == &N_quit
) {
//
// It would be frustrating if the system did not respond to
// a QUIT and forced you to do `resume/with [quit]`. So
// this is *not* caught, rather passed back up with the
// special -2 status code.
//
DROP_TRAP_SAME_STACKLEVEL_AS_PUSH(&state);
CATCH_THROWN(out, out);
*exit_status = -2;
return -2;
}
}
else {
// We are at the top level REPL, where we catch QUIT and for
// now, also EXIT as meaning you want to leave.
//
if (
IS_FUNCTION(out)
&& (
VAL_FUNC_DISPATCHER(out) == &N_quit
|| VAL_FUNC_DISPATCHER(out) == &N_exit
)
) {
DROP_TRAP_SAME_STACKLEVEL_AS_PUSH(&state);
CATCH_THROWN(out, out);
*exit_status = Exit_Status_From_Value(out);
return -2; // Revisit hardcoded #
}
}
fail (Error_No_Catch_For_Throw(out));
}
DROP_TRAP_SAME_STACKLEVEL_AS_PUSH(&state);
return 0;
}