LJ_FR2: Fix stack checks in vararg calls.

Thanks to Peter Cawley. #1048
2023-09-21 05:19:55 +02:00
parent 234dbc481e
commit d1a2fef8a8
4 changed files with 4 additions and 2 deletions
--- a/src/lj_dispatch.c
+++ b/src/lj_dispatch.c
@@ -453,7 +453,7 @@ static int call_init(lua_State *L, GCfunc *fn)
    int numparams = pt->numparams;
    int gotparams = (int)(L->top - L->base);
    int need = pt->framesize;
-    if ((pt->flags & PROTO_VARARG)) need += 1+gotparams;
+    if ((pt->flags & PROTO_VARARG)) need += 1+LJ_FR2+gotparams;
    lj_state_checkstack(L, (MSize)need);
    numparams -= gotparams;
    return numparams >= 0 ? numparams : 0;