From c25b209c8b7744916111dc0c4fd0b2a1ddc72352 Mon Sep 17 00:00:00 2001
From: daurnimator <quae@daurnimator.com>
Date: Wed, 24 May 2017 15:25:43 +1000
Subject: src/lvm.js: loops with integers should overflow

---
 src/lvm.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'src')

diff --git a/src/lvm.js b/src/lvm.js
index 0081376..cd197ab 100644
--- a/src/lvm.js
+++ b/src/lvm.js
@@ -516,7 +516,7 @@ const luaV_execute = function(L) {
             case OCi.OP_FORLOOP: {
                 if (L.stack[ra].ttisinteger()) { /* integer loop? */
                     let step = L.stack[ra + 2].value;
-                    let idx = L.stack[ra].value + step;
+                    let idx = (L.stack[ra].value + step)|0;
                     let limit = L.stack[ra + 1].value;
 
                     if (0 < step ? idx <= limit : limit <= idx) {
@@ -547,7 +547,7 @@ const luaV_execute = function(L) {
                 if (init.ttisinteger() && pstep.ttisinteger() && forlim.casted) { /* all values are integer */
                     let initv = forlim.stopnow ? 0 : init.value;
                     plimit.value = forlim.ilimit;
-                    init.value = initv - pstep.value;
+                    init.value = (initv - pstep.value)|0;
                 } else { /* try making all values floats */
                     let ninit = tonumber(init);
                     let nlimit = tonumber(plimit);
-- 
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