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-rw-r--r--src/runtime.js2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/runtime.js b/src/runtime.js
index 43bd7de1..5fce4651 100644
--- a/src/runtime.js
+++ b/src/runtime.js
@@ -55,7 +55,7 @@ var RuntimeGenerator = {
if (initial === 0 && SKIP_STACK_IN_SMALL && !force) return '';
var ret = '';
if (SAFE_HEAP) {
- ret += 'for (var i = __stackBase__; i < STACKTOP; i++) SAFE_HEAP_CLEAR(i);';
+ ret += 'var i = __stackBase__; while ((i|0) < (STACKTOP|0)) { SAFE_HEAP_CLEAR(i|0); i = (i+1)|0 }';
}
return ret += 'STACKTOP = __stackBase__';
},