From 6ca580155b035fd369f193cdee59391b594a5028 Mon Sep 17 00:00:00 2001
From: Mike Pall <mike>
Date: Mon, 19 Jul 2021 17:03:16 +0200
Subject: Avoid out-of-range number of results when compiling select(k, ...).

The interpreter will throw and abort the trace, anyway.
---
 src/lj_ffrecord.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/lj_ffrecord.c b/src/lj_ffrecord.c
index ff6ecc51..9405e694 100644
--- a/src/lj_ffrecord.c
+++ b/src/lj_ffrecord.c
@@ -256,9 +256,9 @@ static void LJ_FASTCALL recff_select(jit_State *J, RecordFFData *rd)
       ptrdiff_t n = (ptrdiff_t)J->maxslot;
       if (start < 0) start += n;
       else if (start > n) start = n;
-      rd->nres = n - start;
       if (start >= 1) {
 	ptrdiff_t i;
+	rd->nres = n - start;
 	for (i = 0; i < n - start; i++)
 	  J->base[i] = J->base[start+i];
       }  /* else: Interpreter will throw. */
-- 
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