diff -Nr lua-5.4.3/Makefile lua-5.4.4/Makefile
49c49
< R= $V.3
---
> R= $V.4
diff -Nr lua-5.4.3/README lua-5.4.4/README
2c2
< This is Lua 5.4.3, released on 15 Mar 2021.
---
> This is Lua 5.4.4, released on 13 Jan 2022.
diff -Nr lua-5.4.3/doc/contents.html lua-5.4.4/doc/contents.html
35c35
< Copyright © 2020–2021 Lua.org, PUC-Rio.
---
> Copyright © 2020–2022 Lua.org, PUC-Rio.
667c667
< Wed Mar 3 13:04:44 UTC 2021
---
> Thu Jan 13 11:32:22 UTC 2022
670c670
< Last change: revised for Lua 5.4.3
---
> Last change: revised for Lua 5.4.4
diff -Nr lua-5.4.3/doc/manual.html lua-5.4.4/doc/manual.html
22c22
< Copyright © 2020–2021 Lua.org, PUC-Rio.
---
> Copyright © 2020–2022 Lua.org, PUC-Rio.
964,968c964,965
< Finalizers cannot yield.
< Except for that, they can do anything,
< such as raise errors, create new objects,
< or even run the garbage collector.
< However, because they can run in unpredictable times,
---
> Finalizers cannot yield nor run the garbage collector.
> Because they can run in unpredictable times,
1639,1640c1636,1639
< The assignment statement first evaluates all its expressions
< and only then the assignments are performed.
---
> If a variable is both assigned and read
> inside a multiple assignment,
> Lua ensures all reads get the value of the variable
> before the assignment.
1664a1664,1671
> Note that this guarantee covers only accesses
> syntactically inside the assignment statement.
> If a function or a metamethod called during the assignment
> changes the value of a variable,
> Lua gives no guarantees about the order of that access.
>
>
>
2419c2426
< A border in a table t is any natural number
---
> A border in a table t is any non-negative integer
2423c2430,2431
< (border == 0 or t[border] ~= nil) and t[border + 1] == nil
---
> (border == 0 or t[border] ~= nil) and
> (t[border + 1] == nil or border == math.maxinteger)
2426,2428c2434,2440
< a border is any (natural) index present in the table
< that is followed by an absent index
< (or zero, when index 1 is absent).
---
> a border is any positive integer index present in the table
> that is followed by an absent index,
> plus two limit cases:
> zero, when index 1 is absent;
> and the maximum value for an integer, when that index is present.
> Note that keys that are not positive integers
> do not interfere with borders.
2439,2440c2451
< has three borders (0, 3, and 6) and three holes
< (at indices 1, 4, and 5),
---
> has three borders (0, 3, and 6),
2443,2444d2453
< Note that non-natural keys do not interfere
< with whether a table is a sequence.
2462c2471
< where n is the largest natural key in the table.
---
> where n is the largest integer key in the table.
3981a3991,3994
>
> This function should not be called by a finalizer.
>
>
5936c5949,5952
< you must call lua_getinfo.
---
> you must call lua_getinfo with an appropriate parameter.
> (Specifically, to get a field,
> you must add the letter between parentheses in the field's comment
> to the parameter what of lua_getinfo.)
6113c6129,6132
< a value to be pushed on the stack:
---
> a value to be pushed on the stack.
> (These characters are also documented in the declaration of
> the structure lua_Debug,
> between parentheses in the comments following each field.)
6117c6136,6147
<
'n': fills in the field name and namewhat;
---
> 'f':
> pushes onto the stack the function that is
> running at the given level;
>
>
> 'l': fills in the field currentline;
>
>
> 'n': fills in the fields name and namewhat;
>
>
> 'r': fills in the fields ftransfer and ntransfer;
6125,6127d6154
< 'l': fills in the field currentline;
<
<
6135,6139d6161
< 'f':
< pushes onto the stack the function that is
< running at the given level;
<
<
6141,6148c6163,6166
< pushes onto the stack a table whose indices are the
< numbers of the lines that are valid on the function.
< (A valid line is a line with some associated code,
< that is, a line where you can put a break point.
< Non-valid lines include empty lines and comments.)
<
<
<
---
> pushes onto the stack a table whose indices are
> the lines on the function with some associated code,
> that is, the lines where you can put a break point.
> (Lines with no code include empty lines and comments.)
6151,6153d6168
<
<
<
6511c6526
< [-0, +0, m]
---
> [-?, +?, m]
6565c6580
< [-1, +?, m]
---
> [-?, +?, m]
6719c6734
< [-0, +0, –]
---
> [-0, +?, –]
6757c6772
< [-0, +0, –]
---
> [-?, +?, –]
7559a7575,7579
>
> A function with a NULL value represents a placeholder,
> which is filled with false.
>
>
7921a7942,7945
>
> This function should not be called by a finalizer.
>
>
7939c7963
< Raises an error (see §2.3) with @{message} as the error object.
---
> Raises an error (see §2.3) with message as the error object.
8114,8116c8138,8139
< The behavior of next is undefined if,
< during the traversal,
< you assign any value to a non-existent field in the table.
---
> You should not assign any value to a non-existent field in a table
> during its traversal.
8162c8185
< which is true if the call succeeds without errors.
---
> which is true if the call succeeds without errors.
8442c8465
< Returns true when the coroutine co can yield.
---
> Returns true when the coroutine co can yield.
8486c8509
< true when the running coroutine is the main one.
---
> true when the running coroutine is the main one.
9024c9047
< A value of true as a fourth, optional argument plain
---
> A true as a fourth, optional argument plain
9049c9072
< *, h, L, l, and n are not supported
---
> F, n, *, h, L, and l are not supported
9050a9074,9075
> Both width and precision, when present,
> are limited to two digits.
9074c9099
< This specifier does not support modifiers (flags, width, length).
---
> This specifier does not support modifiers (flags, width, precision).
10365c10390
< true if and only if integer m is below integer n when
---
> true if and only if integer m is below integer n when
11927c11952
< Mon Mar 15 13:39:42 UTC 2021
---
> Thu Jan 13 11:33:16 UTC 2022
11930c11955
< Last change: revised for Lua 5.4.3
---
> Last change: revised for Lua 5.4.4
diff -Nr lua-5.4.3/doc/readme.html lua-5.4.4/doc/readme.html
113c113
< the top-level directory, which is named lua-5.4.3.
---
> the top-level directory, which is named lua-5.4.4.
306c306
< Copyright © 1994–2021 Lua.org, PUC-Rio.
---
> Copyright © 1994–2022 Lua.org, PUC-Rio.
333c333
< Wed Mar 3 10:16:26 UTC 2021
---
> Mon Jan 3 09:54:18 UTC 2022
336c336
< Last change: revised for Lua 5.4.3
---
> Last change: revised for Lua 5.4.4
diff -Nr lua-5.4.3/src/Makefile lua-5.4.4/src/Makefile
82c82
< @echo "LDFLAGS= $(SYSLDFLAGS)"
---
> @echo "LDFLAGS= $(LDFLAGS)"
diff -Nr lua-5.4.3/src/lapi.c lua-5.4.4/src/lapi.c
55a56,59
> /*
> ** Convert an acceptable index to a pointer to its respective value.
> ** Non-valid indices return the special nil value 'G(L)->nilvalue'.
> */
73,75c77
< if (ttislcf(s2v(ci->func))) /* light C function? */
< return &G(L)->nilvalue; /* it has no upvalues */
< else {
---
> if (ttisCclosure(s2v(ci->func))) { /* C closure? */
79a82,85
> else { /* light C function or Lua function (through a hook)?) */
> api_check(L, ttislcf(s2v(ci->func)), "caller not a C function");
> return &G(L)->nilvalue; /* no upvalues */
> }
84c90,94
< static StkId index2stack (lua_State *L, int idx) {
---
>
> /*
> ** Convert a valid actual index (not a pseudo-index) to its address.
> */
> l_sinline StkId index2stack (lua_State *L, int idx) {
88c98
< api_check(L, o < L->top, "unacceptable index");
---
> api_check(L, o < L->top, "invalid index");
221c231
< static void reverse (lua_State *L, StkId from, StkId to) {
---
> l_sinline void reverse (lua_State *L, StkId from, StkId to) {
441c451
< static void *touserdata (const TValue *o) {
---
> l_sinline void *touserdata (const TValue *o) {
633c643
< static int auxgetstr (lua_State *L, const TValue *t, const char *k) {
---
> l_sinline int auxgetstr (lua_State *L, const TValue *t, const char *k) {
708c718
< static int finishrawget (lua_State *L, const TValue *val) {
---
> l_sinline int finishrawget (lua_State *L, const TValue *val) {
1129c1139,1141
< global_State *g;
---
> global_State *g = G(L);
> if (g->gcstp & GCSTPGC) /* internal stop? */
> return -1; /* all options are invalid when stopped */
1131d1142
< g = G(L);
1135c1146
< g->gcrunning = 0;
---
> g->gcstp = GCSTPUSR; /* stopped by the user */
1140c1151
< g->gcrunning = 1;
---
> g->gcstp = 0; /* (GCSTPGC must be already zero here) */
1159,1160c1170,1171
< lu_byte oldrunning = g->gcrunning;
< g->gcrunning = 1; /* allow GC to run */
---
> lu_byte oldstp = g->gcstp;
> g->gcstp = 0; /* allow GC to run (GCSTPGC must be zero here) */
1170c1181
< g->gcrunning = oldrunning; /* restore previous state */
---
> g->gcstp = oldstp; /* restore previous state */
1188c1199
< res = g->gcrunning;
---
> res = gcrunning(g);
diff -Nr lua-5.4.3/src/lauxlib.c lua-5.4.4/src/lauxlib.c
883a884
> idx = lua_absindex(L,idx);
diff -Nr lua-5.4.3/src/lauxlib.h lua-5.4.4/src/lauxlib.h
105c105
< LUALIB_API void luaL_addgsub (luaL_Buffer *b, const char *s,
---
> LUALIB_API void (luaL_addgsub) (luaL_Buffer *b, const char *s,
156a157,164
> /*
> ** Perform arithmetic operations on lua_Integer values with wrap-around
> ** semantics, as the Lua core does.
> */
> #define luaL_intop(op,v1,v2) \
> ((lua_Integer)((lua_Unsigned)(v1) op (lua_Unsigned)(v2)))
>
>
diff -Nr lua-5.4.3/src/lbaselib.c lua-5.4.4/src/lbaselib.c
185,186c185,189
< lua_pushstring(L, (oldmode == LUA_GCINC) ? "incremental"
< : "generational");
---
> if (oldmode == -1)
> luaL_pushfail(L); /* invalid call to 'lua_gc' */
> else
> lua_pushstring(L, (oldmode == LUA_GCINC) ? "incremental"
> : "generational");
190a194,198
> /*
> ** check whether call to 'lua_gc' was valid (not inside a finalizer)
> */
> #define checkvalres(res) { if (res == -1) break; }
>
202a211
> checkvalres(k);
208a218
> checkvalres(res);
215a226
> checkvalres(previous);
220a232
> checkvalres(res);
236a249
> checkvalres(res);
240a254,255
> luaL_pushfail(L); /* invalid call (inside a finalizer) */
> return 1;
263a279,283
> static int pairscont (lua_State *L, int status, lua_KContext k) {
> (void)L; (void)status; (void)k; /* unused */
> return 3;
> }
>
273c293
< lua_call(L, 1, 3); /* get 3 values from metamethod */
---
> lua_callk(L, 1, 3, 0, pairscont); /* get 3 values from metamethod */
283c303,304
< lua_Integer i = luaL_checkinteger(L, 2) + 1;
---
> lua_Integer i = luaL_checkinteger(L, 2);
> i = luaL_intop(+, i, 1);
diff -Nr lua-5.4.3/src/lcode.c lua-5.4.4/src/lcode.c
12a13
> #include
583,585d583
< ** Integers use userdata as keys to avoid collision with floats with
< ** same value; conversion to 'void*' is used only for hashing, so there
< ** are no "precision" problems.
588,589c586
< TValue k, o;
< setpvalue(&k, cast_voidp(cast_sizet(n)));
---
> TValue o;
591c588
< return addk(fs, &k, &o);
---
> return addk(fs, &o, &o); /* use integer itself as key */
595c592,600
< ** Add a float to list of constants and return its index.
---
> ** Add a float to list of constants and return its index. Floats
> ** with integral values need a different key, to avoid collision
> ** with actual integers. To that, we add to the number its smaller
> ** power-of-two fraction that is still significant in its scale.
> ** For doubles, that would be 1/2^52.
> ** (This method is not bulletproof: there may be another float
> ** with that value, and for floats larger than 2^53 the result is
> ** still an integer. At worst, this only wastes an entry with
> ** a duplicate.)
598a604
> lua_Integer ik;
600c606,618
< return addk(fs, &o, &o); /* use number itself as key */
---
> if (!luaV_flttointeger(r, &ik, F2Ieq)) /* not an integral value? */
> return addk(fs, &o, &o); /* use number itself as key */
> else { /* must build an alternative key */
> const int nbm = l_floatatt(MANT_DIG);
> const lua_Number q = l_mathop(ldexp)(l_mathop(1.0), -nbm + 1);
> const lua_Number k = (ik == 0) ? q : r + r*q; /* new key */
> TValue kv;
> setfltvalue(&kv, k);
> /* result is not an integral value, unless value is too large */
> lua_assert(!luaV_flttointeger(k, &ik, F2Ieq) ||
> l_mathop(fabs)(r) >= l_mathop(1e6));
> return addk(fs, &kv, &o);
> }
diff -Nr lua-5.4.3/src/lcorolib.c lua-5.4.4/src/lcorolib.c
81c81
< lua_xmove(co, L, 1); /* copy error message */
---
> lua_xmove(co, L, 1); /* move error message to the caller */
182c182
< lua_xmove(co, L, 1); /* copy error message */
---
> lua_xmove(co, L, 1); /* move error message */
diff -Nr lua-5.4.3/src/ldebug.c lua-5.4.4/src/ldebug.c
37,38c37,38
< static const char *funcnamefromcode (lua_State *L, CallInfo *ci,
< const char **name);
---
> static const char *funcnamefromcall (lua_State *L, CallInfo *ci,
> const char **name);
67c67
< /* estimate must be a lower bond of the correct base */
---
> /* estimate must be a lower bound of the correct base */
304c304,311
< for (i = 0; i < p->sizelineinfo; i++) { /* for all instructions */
---
> if (!p->is_vararg) /* regular function? */
> i = 0; /* consider all instructions */
> else { /* vararg function */
> lua_assert(GET_OPCODE(p->code[0]) == OP_VARARGPREP);
> currentline = nextline(p, currentline, 0);
> i = 1; /* skip first instruction (OP_VARARGPREP) */
> }
> for (; i < p->sizelineinfo; i++) { /* for each instruction */
313,321c320,322
< if (ci == NULL) /* no 'ci'? */
< return NULL; /* no info */
< else if (ci->callstatus & CIST_FIN) { /* is this a finalizer? */
< *name = "__gc";
< return "metamethod"; /* report it as such */
< }
< /* calling function is a known Lua function? */
< else if (!(ci->callstatus & CIST_TAIL) && isLua(ci->previous))
< return funcnamefromcode(L, ci->previous, name);
---
> /* calling function is a known function? */
> if (ci != NULL && !(ci->callstatus & CIST_TAIL))
> return funcnamefromcall(L, ci->previous, name);
593,594c594,595
< static const char *funcnamefromcode (lua_State *L, CallInfo *ci,
< const char **name) {
---
> static const char *funcnamefromcode (lua_State *L, const Proto *p,
> int pc, const char **name) {
596,597d596
< const Proto *p = ci_func(ci)->p; /* calling function */
< int pc = currentpc(ci); /* calling instruction index */
599,602d597
< if (ci->callstatus & CIST_HOOKED) { /* was it called inside a hook? */
< *name = "?";
< return "hook";
< }
638a634,653
>
> /*
> ** Try to find a name for a function based on how it was called.
> */
> static const char *funcnamefromcall (lua_State *L, CallInfo *ci,
> const char **name) {
> if (ci->callstatus & CIST_HOOKED) { /* was it called inside a hook? */
> *name = "?";
> return "hook";
> }
> else if (ci->callstatus & CIST_FIN) { /* was it called as a finalizer? */
> *name = "__gc";
> return "metamethod"; /* report it as such */
> }
> else if (isLua(ci))
> return funcnamefromcode(L, ci_func(ci)->p, currentpc(ci), name);
> else
> return NULL;
> }
>
677a693,704
> static const char *formatvarinfo (lua_State *L, const char *kind,
> const char *name) {
> if (kind == NULL)
> return ""; /* no information */
> else
> return luaO_pushfstring(L, " (%s '%s')", kind, name);
> }
>
> /*
> ** Build a string with a "description" for the value 'o', such as
> ** "variable 'x'" or "upvalue 'y'".
> */
679d705
< const char *name = NULL; /* to avoid warnings */
680a707
> const char *name = NULL; /* to avoid warnings */
688c715
< return (kind) ? luaO_pushfstring(L, " (%s '%s')", kind, name) : "";
---
> return formatvarinfo(L, kind, name);
692c719,723
< l_noret luaG_typeerror (lua_State *L, const TValue *o, const char *op) {
---
> /*
> ** Raise a type error
> */
> static l_noret typeerror (lua_State *L, const TValue *o, const char *op,
> const char *extra) {
694c725
< luaG_runerror(L, "attempt to %s a %s value%s", op, t, varinfo(L, o));
---
> luaG_runerror(L, "attempt to %s a %s value%s", op, t, extra);
697a729,742
> /*
> ** Raise a type error with "standard" information about the faulty
> ** object 'o' (using 'varinfo').
> */
> l_noret luaG_typeerror (lua_State *L, const TValue *o, const char *op) {
> typeerror(L, o, op, varinfo(L, o));
> }
>
>
> /*
> ** Raise an error for calling a non-callable object. Try to find a name
> ** for the object based on how it was called ('funcnamefromcall'); if it
> ** cannot get a name there, try 'varinfo'.
> */
701,707c746,748
< const char *what = (isLua(ci)) ? funcnamefromcode(L, ci, &name) : NULL;
< if (what != NULL) {
< const char *t = luaT_objtypename(L, o);
< luaG_runerror(L, "%s '%s' is not callable (a %s value)", what, name, t);
< }
< else
< luaG_typeerror(L, o, "call");
---
> const char *kind = funcnamefromcall(L, ci, &name);
> const char *extra = kind ? formatvarinfo(L, kind, name) : varinfo(L, o);
> typeerror(L, o, "call", extra);
diff -Nr lua-5.4.3/src/ldo.c lua-5.4.4/src/ldo.c
390,391c390,391
< void luaD_tryfuncTM (lua_State *L, StkId func) {
< const TValue *tm = luaT_gettmbyobj(L, s2v(func), TM_CALL);
---
> StkId luaD_tryfuncTM (lua_State *L, StkId func) {
> const TValue *tm;
392a393,394
> checkstackGCp(L, 1, func); /* space for metamethod */
> tm = luaT_gettmbyobj(L, s2v(func), TM_CALL); /* (after previous GC) */
398a401
> return func;
408c411
< static void moveresults (lua_State *L, StkId res, int nres, int wanted) {
---
> l_sinline void moveresults (lua_State *L, StkId res, int nres, int wanted) {
475a479,513
> l_sinline CallInfo *prepCallInfo (lua_State *L, StkId func, int nret,
> int mask, StkId top) {
> CallInfo *ci = L->ci = next_ci(L); /* new frame */
> ci->func = func;
> ci->nresults = nret;
> ci->callstatus = mask;
> ci->top = top;
> return ci;
> }
>
>
> /*
> ** precall for C functions
> */
> l_sinline int precallC (lua_State *L, StkId func, int nresults,
> lua_CFunction f) {
> int n; /* number of returns */
> CallInfo *ci;
> checkstackGCp(L, LUA_MINSTACK, func); /* ensure minimum stack size */
> L->ci = ci = prepCallInfo(L, func, nresults, CIST_C,
> L->top + LUA_MINSTACK);
> lua_assert(ci->top <= L->stack_last);
> if (l_unlikely(L->hookmask & LUA_MASKCALL)) {
> int narg = cast_int(L->top - func) - 1;
> luaD_hook(L, LUA_HOOKCALL, -1, 1, narg);
> }
> lua_unlock(L);
> n = (*f)(L); /* do the actual call */
> lua_lock(L);
> api_checknelems(L, n);
> luaD_poscall(L, ci, n);
> return n;
> }
>
>
479c517,518
< ** (so that it includes the function itself).
---
> ** (so that it includes the function itself). Return the number of
> ** results, if it was a C function, or -1 for a Lua function.
481,496c520,553
< void luaD_pretailcall (lua_State *L, CallInfo *ci, StkId func, int narg1) {
< Proto *p = clLvalue(s2v(func))->p;
< int fsize = p->maxstacksize; /* frame size */
< int nfixparams = p->numparams;
< int i;
< for (i = 0; i < narg1; i++) /* move down function and arguments */
< setobjs2s(L, ci->func + i, func + i);
< checkstackGC(L, fsize);
< func = ci->func; /* moved-down function */
< for (; narg1 <= nfixparams; narg1++)
< setnilvalue(s2v(func + narg1)); /* complete missing arguments */
< ci->top = func + 1 + fsize; /* top for new function */
< lua_assert(ci->top <= L->stack_last);
< ci->u.l.savedpc = p->code; /* starting point */
< ci->callstatus |= CIST_TAIL;
< L->top = func + narg1; /* set top */
---
> int luaD_pretailcall (lua_State *L, CallInfo *ci, StkId func,
> int narg1, int delta) {
> retry:
> switch (ttypetag(s2v(func))) {
> case LUA_VCCL: /* C closure */
> return precallC(L, func, LUA_MULTRET, clCvalue(s2v(func))->f);
> case LUA_VLCF: /* light C function */
> return precallC(L, func, LUA_MULTRET, fvalue(s2v(func)));
> case LUA_VLCL: { /* Lua function */
> Proto *p = clLvalue(s2v(func))->p;
> int fsize = p->maxstacksize; /* frame size */
> int nfixparams = p->numparams;
> int i;
> checkstackGCp(L, fsize - delta, func);
> ci->func -= delta; /* restore 'func' (if vararg) */
> for (i = 0; i < narg1; i++) /* move down function and arguments */
> setobjs2s(L, ci->func + i, func + i);
> func = ci->func; /* moved-down function */
> for (; narg1 <= nfixparams; narg1++)
> setnilvalue(s2v(func + narg1)); /* complete missing arguments */
> ci->top = func + 1 + fsize; /* top for new function */
> lua_assert(ci->top <= L->stack_last);
> ci->u.l.savedpc = p->code; /* starting point */
> ci->callstatus |= CIST_TAIL;
> L->top = func + narg1; /* set top */
> return -1;
> }
> default: { /* not a function */
> func = luaD_tryfuncTM(L, func); /* try to get '__call' metamethod */
> /* return luaD_pretailcall(L, ci, func, narg1 + 1, delta); */
> narg1++;
> goto retry; /* try again */
> }
> }
509d565
< lua_CFunction f;
513,514c569,570
< f = clCvalue(s2v(func))->f;
< goto Cfunc;
---
> precallC(L, func, nresults, clCvalue(s2v(func))->f);
> return NULL;
516,535c572
< f = fvalue(s2v(func));
< Cfunc: {
< int n; /* number of returns */
< CallInfo *ci;
< checkstackGCp(L, LUA_MINSTACK, func); /* ensure minimum stack size */
< L->ci = ci = next_ci(L);
< ci->nresults = nresults;
< ci->callstatus = CIST_C;
< ci->top = L->top + LUA_MINSTACK;
< ci->func = func;
< lua_assert(ci->top <= L->stack_last);
< if (l_unlikely(L->hookmask & LUA_MASKCALL)) {
< int narg = cast_int(L->top - func) - 1;
< luaD_hook(L, LUA_HOOKCALL, -1, 1, narg);
< }
< lua_unlock(L);
< n = (*f)(L); /* do the actual call */
< lua_lock(L);
< api_checknelems(L, n);
< luaD_poscall(L, ci, n);
---
> precallC(L, func, nresults, fvalue(s2v(func)));
537d573
< }
545,546c581
< L->ci = ci = next_ci(L);
< ci->nresults = nresults;
---
> L->ci = ci = prepCallInfo(L, func, nresults, 0, func + 1 + fsize);
548,550d582
< ci->top = func + 1 + fsize;
< ci->func = func;
< L->ci = ci;
557,558c589,590
< checkstackGCp(L, 1, func); /* space for metamethod */
< luaD_tryfuncTM(L, func); /* try to get '__call' metamethod */
---
> func = luaD_tryfuncTM(L, func); /* try to get '__call' metamethod */
> /* return luaD_precall(L, func, nresults); */
570c602
< static void ccall (lua_State *L, StkId func, int nResults, int inc) {
---
> l_sinline void ccall (lua_State *L, StkId func, int nResults, int inc) {
731c763
< ccall(L, firstArg - 1, LUA_MULTRET, 1); /* just call its body */
---
> ccall(L, firstArg - 1, LUA_MULTRET, 0); /* just call its body */
735d766
< luaE_incCstack(L); /* control the C stack */
785a817,819
> if (getCcalls(L) >= LUAI_MAXCCALLS)
> return resume_error(L, "C stack overflow", nargs);
> L->nCcalls++;
diff -Nr lua-5.4.3/src/ldo.h lua-5.4.4/src/ldo.h
61c61
< LUAI_FUNC void luaD_pretailcall (lua_State *L, CallInfo *ci, StkId func, int n);
---
> LUAI_FUNC int luaD_pretailcall (lua_State *L, CallInfo *ci, StkId func, int narg1, int delta);
65c65
< LUAI_FUNC void luaD_tryfuncTM (lua_State *L, StkId func);
---
> LUAI_FUNC StkId luaD_tryfuncTM (lua_State *L, StkId func);
diff -Nr lua-5.4.3/src/lgc.c lua-5.4.4/src/lgc.c
909c909,910
< int running = g->gcrunning;
---
> int oldgcstp = g->gcstp;
> g->gcstp |= GCSTPGC; /* avoid GC steps */
911d911
< g->gcrunning = 0; /* avoid GC steps */
918c918
< g->gcrunning = running; /* restore state */
---
> g->gcstp = oldgcstp; /* restore state */
920c920
< luaE_warnerror(L, "__gc metamethod");
---
> luaE_warnerror(L, "__gc");
1014c1014,1015
< gfasttm(g, mt, TM_GC) == NULL) /* or has no finalizer? */
---
> gfasttm(g, mt, TM_GC) == NULL || /* or has no finalizer... */
> (g->gcstp & GCSTPCLS)) /* or closing state? */
1504a1506
> g->gcstp = GCSTPCLS; /* no extra finalizers after here */
1510c1512
< deletelist(L, g->finobj, NULL);
---
> lua_assert(g->finobj == NULL); /* no new finalizers */
1649a1652
>
1681c1684
< if (g->gcrunning) { /* running? */
---
> if (gcrunning(g)) { /* running? */
diff -Nr lua-5.4.3/src/lgc.h lua-5.4.4/src/lgc.h
150a151,160
>
> /*
> ** Control when GC is running:
> */
> #define GCSTPUSR 1 /* bit true when GC stopped by user */
> #define GCSTPGC 2 /* bit true when GC stopped by itself */
> #define GCSTPCLS 4 /* bit true when closing Lua state */
> #define gcrunning(g) ((g)->gcstp == 0)
>
>
diff -Nr lua-5.4.3/src/llimits.h lua-5.4.4/src/llimits.h
168a169,182
> ** Inline functions
> */
> #if !defined(LUA_USE_C89)
> #define l_inline inline
> #elif defined(__GNUC__)
> #define l_inline __inline__
> #else
> #define l_inline /* empty */
> #endif
>
> #define l_sinline static l_inline
>
>
> /*
350c364
< { if (G(L)->gcrunning) { pre; luaC_fullgc(L, 0); pos; } }
---
> { if (gcrunning(G(L))) { pre; luaC_fullgc(L, 0); pos; } }
diff -Nr lua-5.4.3/src/lmathlib.c lua-5.4.4/src/lmathlib.c
478c478
< ((lua_Number)1.0 / (UONE << 30) / 8.0 / (UONE << (FIGS - 33)))
---
> (l_mathop(1.0) / (UONE << 30) / l_mathop(8.0) / (UONE << (FIGS - 33)))
489c489
< #define shiftHI ((lua_Number)(UONE << (FIGS - 33)) * 2.0)
---
> #define shiftHI ((lua_Number)(UONE << (FIGS - 33)) * l_mathop(2.0))
diff -Nr lua-5.4.3/src/lobject.c lua-5.4.4/src/lobject.c
167c167
< lua_Number r = 0.0; /* result (accumulator) */
---
> lua_Number r = l_mathop(0.0); /* result (accumulator) */
177c177
< return 0.0; /* invalid format (no '0x') */
---
> return l_mathop(0.0); /* invalid format (no '0x') */
187c187
< r = (r * cast_num(16.0)) + luaO_hexavalue(*s);
---
> r = (r * l_mathop(16.0)) + luaO_hexavalue(*s);
194c194
< return 0.0; /* invalid format */
---
> return l_mathop(0.0); /* invalid format */
203c203
< return 0.0; /* invalid; must have at least one digit */
---
> return l_mathop(0.0); /* invalid; must have at least one digit */
diff -Nr lua-5.4.3/src/lobject.h lua-5.4.4/src/lobject.h
71c71
< #define valraw(o) (&val_(o))
---
> #define valraw(o) (val_(o))
115c115
< /* main macro to copy values (from 'obj1' to 'obj2') */
---
> /* main macro to copy values (from 'obj2' to 'obj1') */
diff -Nr lua-5.4.3/src/lopcodes.h lua-5.4.4/src/lopcodes.h
193c193,194
< ** grep "ORDER OP" if you change these enums
---
> ** Grep "ORDER OP" if you change these enums. Opcodes marked with a (*)
> ** has extra descriptions in the notes after the enumeration.
206c207
< OP_LFALSESKIP,/*A R[A] := false; pc++ */
---
> OP_LFALSESKIP,/*A R[A] := false; pc++ (*) */
257c258
< OP_MMBIN,/* A B C call C metamethod over R[A] and R[B] */
---
> OP_MMBIN,/* A B C call C metamethod over R[A] and R[B] (*) */
283c284
< OP_TESTSET,/* A B k if (not R[B] == k) then pc++ else R[A] := R[B] */
---
> OP_TESTSET,/* A B k if (not R[B] == k) then pc++ else R[A] := R[B] (*) */
317a319,330
>
> (*) Opcode OP_LFALSESKIP is used to convert a condition to a boolean
> value, in a code equivalent to (not cond ? false : true). (It
> produces false and skips the next instruction producing true.)
>
> (*) Opcodes OP_MMBIN and variants follow each arithmetic and
> bitwise opcode. If the operation succeeds, it skips this next
> opcode. Otherwise, this opcode calls the corresponding metamethod.
>
> (*) Opcode OP_TESTSET is used in short-circuit expressions that need
> both to jump and to produce a value, such as (a = b or c).
>
diff -Nr lua-5.4.3/src/lparser.c lua-5.4.4/src/lparser.c
419a420,430
> ** Mark that current block has a to-be-closed variable.
> */
> static void marktobeclosed (FuncState *fs) {
> BlockCnt *bl = fs->bl;
> bl->upval = 1;
> bl->insidetbc = 1;
> fs->needclose = 1;
> }
>
>
> /*
1602c1613
< markupval(fs, fs->nactvar); /* last control var. must be closed */
---
> marktobeclosed(fs); /* last control var. must be closed */
1706c1717
< static void checktoclose (LexState *ls, int level) {
---
> static void checktoclose (FuncState *fs, int level) {
1708,1710c1719
< FuncState *fs = ls->fs;
< markupval(fs, level + 1);
< fs->bl->insidetbc = 1; /* in the scope of a to-be-closed variable */
---
> marktobeclosed(fs);
1754c1763
< checktoclose(ls, toclose);
---
> checktoclose(fs, toclose);
1778a1788
> check_readonly(ls, &v);
diff -Nr lua-5.4.3/src/lstate.c lua-5.4.4/src/lstate.c
169c169
< luaD_throw(L, LUA_ERRERR); /* error while handing stack error */
---
> luaD_throw(L, LUA_ERRERR); /* error while handling stack error */
239c239
< g->gcrunning = 1; /* allow gc */
---
> g->gcstp = 0; /* allow gc */
272c272
< luaC_freeallobjects(L); /* jucst collect its objects */
---
> luaC_freeallobjects(L); /* just collect its objects */
273a274
> L->ci = &L->base_ci; /* unwind CallInfo list */
332a334
> L->status = LUA_OK; /* so it can run __close metamethods */
339d340
< L->status = cast_byte(status);
375c376
< g->gcrunning = 0; /* no GC while building state */
---
> g->gcstp = GCSTPGC; /* no GC while building state */
diff -Nr lua-5.4.3/src/lstate.h lua-5.4.4/src/lstate.h
168c168
< ** returning from a C function;
---
> ** returning from a function;
212c212
< #define CIST_FIN (1<<7) /* call is running a finalizer */
---
> #define CIST_FIN (1<<7) /* function "called" a finalizer */
266c266
< lu_byte gcrunning; /* true if GC is running */
---
> lu_byte gcstp; /* control whether GC is running */
diff -Nr lua-5.4.3/src/lstrlib.c lua-5.4.4/src/lstrlib.c
1093,1094c1093,1109
< #if !defined(L_FMTFLAGS)
< #define L_FMTFLAGS "-+ #0"
---
> #if !defined(L_FMTFLAGSF)
>
> /* valid flags for a, A, e, E, f, F, g, and G conversions */
> #define L_FMTFLAGSF "-+#0 "
>
> /* valid flags for o, x, and X conversions */
> #define L_FMTFLAGSX "-#0"
>
> /* valid flags for d and i conversions */
> #define L_FMTFLAGSI "-+0 "
>
> /* valid flags for u conversions */
> #define L_FMTFLAGSU "-0"
>
> /* valid flags for c, p, and s conversions */
> #define L_FMTFLAGSC "-"
>
1099c1114,1117
< ** maximum size of each format specification (such as "%-099.99d")
---
> ** Maximum size of each format specification (such as "%-099.99d"):
> ** Initial '%', flags (up to 5), width (2), period, precision (2),
> ** length modifier (8), conversion specifier, and final '\0', plus some
> ** extra.
1192,1202c1210,1213
< static const char *scanformat (lua_State *L, const char *strfrmt, char *form) {
< const char *p = strfrmt;
< while (*p != '\0' && strchr(L_FMTFLAGS, *p) != NULL) p++; /* skip flags */
< if ((size_t)(p - strfrmt) >= sizeof(L_FMTFLAGS)/sizeof(char))
< luaL_error(L, "invalid format (repeated flags)");
< if (isdigit(uchar(*p))) p++; /* skip width */
< if (isdigit(uchar(*p))) p++; /* (2 digits at most) */
< if (*p == '.') {
< p++;
< if (isdigit(uchar(*p))) p++; /* skip precision */
< if (isdigit(uchar(*p))) p++; /* (2 digits at most) */
---
> static const char *get2digits (const char *s) {
> if (isdigit(uchar(*s))) {
> s++;
> if (isdigit(uchar(*s))) s++; /* (2 digits at most) */
1204,1205c1215,1252
< if (isdigit(uchar(*p)))
< luaL_error(L, "invalid format (width or precision too long)");
---
> return s;
> }
>
>
> /*
> ** Check whether a conversion specification is valid. When called,
> ** first character in 'form' must be '%' and last character must
> ** be a valid conversion specifier. 'flags' are the accepted flags;
> ** 'precision' signals whether to accept a precision.
> */
> static void checkformat (lua_State *L, const char *form, const char *flags,
> int precision) {
> const char *spec = form + 1; /* skip '%' */
> spec += strspn(spec, flags); /* skip flags */
> if (*spec != '0') { /* a width cannot start with '0' */
> spec = get2digits(spec); /* skip width */
> if (*spec == '.' && precision) {
> spec++;
> spec = get2digits(spec); /* skip precision */
> }
> }
> if (!isalpha(uchar(*spec))) /* did not go to the end? */
> luaL_error(L, "invalid conversion specification: '%s'", form);
> }
>
>
> /*
> ** Get a conversion specification and copy it to 'form'.
> ** Return the address of its last character.
> */
> static const char *getformat (lua_State *L, const char *strfrmt,
> char *form) {
> /* spans flags, width, and precision ('0' is included as a flag) */
> size_t len = strspn(strfrmt, L_FMTFLAGSF "123456789.");
> len++; /* adds following character (should be the specifier) */
> /* still needs space for '%', '\0', plus a length modifier */
> if (len >= MAX_FORMAT - 10)
> luaL_error(L, "invalid format (too long)");
1207,1210c1254,1256
< memcpy(form, strfrmt, ((p - strfrmt) + 1) * sizeof(char));
< form += (p - strfrmt) + 1;
< *form = '\0';
< return p;
---
> memcpy(form, strfrmt, len * sizeof(char));
> *(form + len) = '\0';
> return strfrmt + len - 1;
1232a1279
> const char *flags;
1242,1244c1289,1291
< int maxitem = MAX_ITEM;
< char *buff = luaL_prepbuffsize(&b, maxitem); /* to put formatted item */
< int nb = 0; /* number of bytes in added item */
---
> int maxitem = MAX_ITEM; /* maximum length for the result */
> char *buff = luaL_prepbuffsize(&b, maxitem); /* to put result */
> int nb = 0; /* number of bytes in result */
1247c1294
< strfrmt = scanformat(L, strfrmt, form);
---
> strfrmt = getformat(L, strfrmt, form);
1249a1297
> checkformat(L, form, L_FMTFLAGSC, 0);
1254c1302,1309
< case 'o': case 'u': case 'x': case 'X': {
---
> flags = L_FMTFLAGSI;
> goto intcase;
> case 'u':
> flags = L_FMTFLAGSU;
> goto intcase;
> case 'o': case 'x': case 'X':
> flags = L_FMTFLAGSX;
> intcase: {
1255a1311
> checkformat(L, form, flags, 1);
1260a1317
> checkformat(L, form, L_FMTFLAGSF, 1);
1270a1328
> checkformat(L, form, L_FMTFLAGSF, 1);
1276a1335
> checkformat(L, form, L_FMTFLAGSC, 0);
1297c1356,1357
< if (!strchr(form, '.') && l >= 100) {
---
> checkformat(L, form, L_FMTFLAGSC, 1);
> if (strchr(form, '.') == NULL && l >= 100) {
1355,1363d1414
< /* dummy structure to get native alignment requirements */
< struct cD {
< char c;
< union { double d; void *p; lua_Integer i; lua_Number n; } u;
< };
<
< #define MAXALIGN (offsetof(struct cD, u))
<
<
1437a1489,1490
> /* dummy structure to get native alignment requirements */
> struct cD { char c; union { LUAI_MAXALIGN; } u; };
1468c1521,1525
< case '!': h->maxalign = getnumlimit(h, fmt, MAXALIGN); break;
---
> case '!': {
> const int maxalign = offsetof(struct cD, u);
> h->maxalign = getnumlimit(h, fmt, maxalign);
> break;
> }
diff -Nr lua-5.4.3/src/ltable.c lua-5.4.4/src/ltable.c
87,88d86
< #define hashint(t,i) hashpow2(t, i)
<
103a102,115
> /*
> ** Hash for integers. To allow a good hash, use the remainder operator
> ** ('%'). If integer fits as a non-negative int, compute an int
> ** remainder, which is faster. Otherwise, use an unsigned-integer
> ** remainder, which uses all bits and ensures a non-negative result.
> */
> static Node *hashint (const Table *t, lua_Integer i) {
> lua_Unsigned ui = l_castS2U(i);
> if (ui <= (unsigned int)INT_MAX)
> return hashmod(t, cast_int(ui));
> else
> return hashmod(t, ui);
> }
>
137,139c149
< ** the index of its hash value). The key comes broken (tag in 'ktt'
< ** and value in 'vkl') so that we can call it on keys inserted into
< ** nodes.
---
> ** the index of its hash value).
141,142c151,152
< static Node *mainposition (const Table *t, int ktt, const Value *kvl) {
< switch (withvariant(ktt)) {
---
> static Node *mainpositionTV (const Table *t, const TValue *key) {
> switch (ttypetag(key)) {
144,145c154,155
< lua_Integer key = ivalueraw(*kvl);
< return hashint(t, key);
---
> lua_Integer i = ivalue(key);
> return hashint(t, i);
148c158
< lua_Number n = fltvalueraw(*kvl);
---
> lua_Number n = fltvalue(key);
152c162
< TString *ts = tsvalueraw(*kvl);
---
> TString *ts = tsvalue(key);
156c166
< TString *ts = tsvalueraw(*kvl);
---
> TString *ts = tsvalue(key);
164c174
< void *p = pvalueraw(*kvl);
---
> void *p = pvalue(key);
168c178
< lua_CFunction f = fvalueraw(*kvl);
---
> lua_CFunction f = fvalue(key);
172c182
< GCObject *o = gcvalueraw(*kvl);
---
> GCObject *o = gcvalue(key);
179,183c189,192
< /*
< ** Returns the main position of an element given as a 'TValue'
< */
< static Node *mainpositionTV (const Table *t, const TValue *key) {
< return mainposition(t, rawtt(key), valraw(key));
---
> l_sinline Node *mainpositionfromnode (const Table *t, Node *nd) {
> TValue key;
> getnodekey(cast(lua_State *, NULL), &key, nd);
> return mainpositionTV(t, &key);
682c691
< othern = mainposition(t, keytt(mp), &keyval(mp));
---
> othern = mainpositionfromnode(t, mp);
diff -Nr lua-5.4.3/src/ltablib.c lua-5.4.4/src/ltablib.c
62d61
< lua_Integer e = aux_getn(L, 1, TAB_RW) + 1; /* first empty element */
63a63,64
> lua_Integer e = aux_getn(L, 1, TAB_RW);
> e = luaL_intop(+, e, 1); /* first empty element */
150c151
< luaL_typename(L, -1), i);
---
> luaL_typename(L, -1), (LUAI_UACINT)i);
diff -Nr lua-5.4.3/src/lua.c lua-5.4.4/src/lua.c
92,99c92,100
< " -e stat execute string 'stat'\n"
< " -i enter interactive mode after executing 'script'\n"
< " -l name require library 'name' into global 'name'\n"
< " -v show version information\n"
< " -E ignore environment variables\n"
< " -W turn warnings on\n"
< " -- stop handling options\n"
< " - stop handling options and execute stdin\n"
---
> " -e stat execute string 'stat'\n"
> " -i enter interactive mode after executing 'script'\n"
> " -l mod require library 'mod' into global 'mod'\n"
> " -l g=mod require library 'mod' into global 'g'\n"
> " -v show version information\n"
> " -E ignore environment variables\n"
> " -W turn warnings on\n"
> " -- stop handling options\n"
> " - stop handling options and execute stdin\n"
210,211c211
< ** Calls 'require(name)' and stores the result in a global variable
< ** with the given name.
---
> ** Receives 'globname[=modname]' and runs 'globname = require(modname)'.
213c213
< static int dolibrary (lua_State *L, const char *name) {
---
> static int dolibrary (lua_State *L, char *globname) {
214a215,221
> char *modname = strchr(globname, '=');
> if (modname == NULL) /* no explicit name? */
> modname = globname; /* module name is equal to global name */
> else {
> *modname = '\0'; /* global name ends here */
> modname++; /* module name starts after the '=' */
> }
216,217c223,224
< lua_pushstring(L, name);
< status = docall(L, 1, 1); /* call 'require(name)' */
---
> lua_pushstring(L, modname);
> status = docall(L, 1, 1); /* call 'require(modname)' */
219c226
< lua_setglobal(L, name); /* global[name] = require return */
---
> lua_setglobal(L, globname); /* globname = require(modname) */
330c337
< const char *extra = argv[i] + 2; /* both options need an argument */
---
> char *extra = argv[i] + 2; /* both options need an argument */
diff -Nr lua-5.4.3/src/lua.h lua-5.4.4/src/lua.h
21c21
< #define LUA_VERSION_RELEASE "3"
---
> #define LUA_VERSION_RELEASE "4"
24c24
< #define LUA_VERSION_RELEASE_NUM (LUA_VERSION_NUM * 100 + 0)
---
> #define LUA_VERSION_RELEASE_NUM (LUA_VERSION_NUM * 100 + 4)
28c28
< #define LUA_COPYRIGHT LUA_RELEASE " Copyright (C) 1994-2021 Lua.org, PUC-Rio"
---
> #define LUA_COPYRIGHT LUA_RELEASE " Copyright (C) 1994-2022 Lua.org, PUC-Rio"
495c495
< * Copyright (C) 1994-2021 Lua.org, PUC-Rio.
---
> * Copyright (C) 1994-2022 Lua.org, PUC-Rio.
diff -Nr lua-5.4.3/src/luac.c lua-5.4.4/src/luac.c
157a158
> luaM_freearray(L,f->lineinfo,f->sizelineinfo);
603c604
< printf("%d %d %d",a,b,c);
---
> printf("%d %d %d%s",a,b,c,ISK);
607c608
< printf("%d %d %d",a,b,c);
---
> printf("%d %d %d%s",a,b,c,ISK);
622c623
< printf(COMMENT "to %d",pc+bx+2);
---
> printf(COMMENT "exit to %d",pc+bx+3);
diff -Nr lua-5.4.3/src/luaconf.h lua-5.4.4/src/luaconf.h
488d487
< @@ LUA_UNSIGNEDBITS is the number of bits in a LUA_UNSIGNED.
509,511d507
< #define LUA_UNSIGNEDBITS (sizeof(LUA_UNSIGNED) * CHAR_BIT)
<
<
diff -Nr lua-5.4.3/src/lutf8lib.c lua-5.4.4/src/lutf8lib.c
227,232c227,229
< lua_Integer n = lua_tointeger(L, 2) - 1;
< if (n < 0) /* first iteration? */
< n = 0; /* start from here */
< else if (n < (lua_Integer)len) {
< n++; /* skip current byte */
< while (iscont(s + n)) n++; /* and its continuations */
---
> lua_Unsigned n = (lua_Unsigned)lua_tointeger(L, 2);
> if (n < len) {
> while (iscont(s + n)) n++; /* skip continuation bytes */
234c231
< if (n >= (lua_Integer)len)
---
> if (n >= len) /* (also handles original 'n' being negative) */
diff -Nr lua-5.4.3/src/lvm.c lua-5.4.4/src/lvm.c
409c409
< static int LTintfloat (lua_Integer i, lua_Number f) {
---
> l_sinline int LTintfloat (lua_Integer i, lua_Number f) {
426c426
< static int LEintfloat (lua_Integer i, lua_Number f) {
---
> l_sinline int LEintfloat (lua_Integer i, lua_Number f) {
443c443
< static int LTfloatint (lua_Number f, lua_Integer i) {
---
> l_sinline int LTfloatint (lua_Number f, lua_Integer i) {
460c460
< static int LEfloatint (lua_Number f, lua_Integer i) {
---
> l_sinline int LEfloatint (lua_Number f, lua_Integer i) {
476c476
< static int LTnum (const TValue *l, const TValue *r) {
---
> l_sinline int LTnum (const TValue *l, const TValue *r) {
498c498
< static int LEnum (const TValue *l, const TValue *r) {
---
> l_sinline int LEnum (const TValue *l, const TValue *r) {
769c769,770
< #define luaV_shiftr(x,y) luaV_shiftl(x,-(y))
---
> #define luaV_shiftr(x,y) luaV_shiftl(x,intop(-, 0, y))
>
850c851
< case OP_CLOSE: case OP_RETURN: { /* yielded closing variables */
---
> case OP_CLOSE: { /* yielded closing variables */
853a855,863
> case OP_RETURN: { /* yielded closing variables */
> StkId ra = base + GETARG_A(inst);
> /* adjust top to signal correct number of returns, in case the
> return is "up to top" ('isIT') */
> L->top = ra + ci->u2.nres;
> /* repeat instruction to close other vars. and complete the return */
> ci->u.l.savedpc--;
> break;
> }
1102c1112
< ** Protect code that can only raise errors. (That is, it cannnot change
---
> ** Protect code that can only raise errors. (That is, it cannot change
1159,1160c1169,1172
< // low-level line tracing for debugging Lua
< // printf("line: %d\n", luaG_getfuncline(cl->p, pcRel(pc, cl->p)));
---
> #if 0
> /* low-level line tracing for debugging Lua */
> printf("line: %d\n", luaG_getfuncline(cl->p, pcRel(pc, cl->p)));
> #endif
1628d1639
< ci->callstatus = 0; /* call re-uses 'luaV_execute' */
1634a1646
> int n; /* number of results when calling a C function */
1648,1656c1660,1662
< while (!ttisfunction(s2v(ra))) { /* not a function? */
< luaD_tryfuncTM(L, ra); /* try '__call' metamethod */
< b++; /* there is now one extra argument */
< checkstackGCp(L, 1, ra);
< }
< if (!ttisLclosure(s2v(ra))) { /* C function? */
< luaD_precall(L, ra, LUA_MULTRET); /* call it */
< updatetrap(ci);
< updatestack(ci); /* stack may have been relocated */
---
> if ((n = luaD_pretailcall(L, ci, ra, b, delta)) < 0) /* Lua function? */
> goto startfunc; /* execute the callee */
> else { /* C function? */
1658c1664
< luaD_poscall(L, ci, cast_int(L->top - ra)); /* finish caller */
---
> luaD_poscall(L, ci, n); /* finish caller */
1662,1664d1667
< ci->func -= delta; /* restore 'func' (if vararg) */
< luaD_pretailcall(L, ci, ra, b); /* prepare call frame */
< goto startfunc; /* execute the callee */
1672a1676
> ci->u2.nres = n; /* save number of returns */