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'lcode.c' can use 'checklimit', too

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This commit is contained in:
Roberto Ierusalimschy
2024-08-20 15:15:23 -03:00
parent 3e88b72b8e
commit 75620b45ae
3 changed files with 10 additions and 12 deletions
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10
lcode.c
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@@ -208,8 +208,7 @@ void luaK_ret (FuncState *fs, int first, int nret) {
case 1: op = OP_RETURN1; break;
default: op = OP_RETURN; break;
}
if (nret + 1 > MAXARG_B)
luaX_syntaxerror(fs->ls, "too many returns");
luaY_checklimit(fs, nret + 1, MAXARG_B, "returns");
luaK_codeABC(fs, op, first, nret + 1, 0);
}
@@ -473,9 +472,7 @@ static int luaK_codek (FuncState *fs, int reg, int k) {
void luaK_checkstack (FuncState *fs, int n) {
int newstack = fs->freereg + n;
if (newstack > fs->f->maxstacksize) {
if (newstack > MAX_FSTACK)
luaX_syntaxerror(fs->ls,
"function or expression needs too many registers");
luaY_checklimit(fs, newstack, MAX_FSTACK, "registers");
fs->f->maxstacksize = cast_byte(newstack);
}
}
@@ -727,8 +724,7 @@ static void const2exp (TValue *v, expdesc *e) {
*/
void luaK_setreturns (FuncState *fs, expdesc *e, int nresults) {
Instruction *pc = &getinstruction(fs, e);
if (nresults + 1 > MAXARG_C)
luaX_syntaxerror(fs->ls, "too many multiple results");
luaY_checklimit(fs, nresults + 1, MAXARG_C, "multiple results");
if (e->k == VCALL) /* expression is an open function call? */
SETARG_C(*pc, nresults + 1);
else {