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Correct fix for stack check when recording BC_VARG.

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Reported by Yichun Zhang.
This commit is contained in:
Mike Pall 2022-12-09 00:20:05 +01:00
parent cc96ab9d51
commit b2791179ef
1 changed files with 2 additions and 2 deletions
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4
src/lj_record.c
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@ -1522,6 +1522,8 @@ static void rec_varg(jit_State *J, BCReg dst, ptrdiff_t nresults)
} else if (dst + nresults > J->maxslot) {
J->maxslot = dst + (BCReg)nresults;
}
if (J->baseslot + J->maxslot >= LJ_MAX_JSLOTS)
lj_trace_err(J, LJ_TRERR_STACKOV);
for (i = 0; i < nresults; i++)
J->base[dst+i] = i < nvararg ? getslot(J, i - nvararg - 1) : TREF_NIL;
} else { /* Unknown number of varargs passed to trace. */
@ -1602,8 +1604,6 @@ static void rec_varg(jit_State *J, BCReg dst, ptrdiff_t nresults)
lj_trace_err_info(J, LJ_TRERR_NYIBC);
}
}
if (J->baseslot + J->maxslot >= LJ_MAX_JSLOTS)
lj_trace_err(J, LJ_TRERR_STACKOV);
}
/* -- Record allocations -------------------------------------------------- */