From e16a7ef60ff1dedc3fe8f16e932466dc057787f7 Mon Sep 17 00:00:00 2001
From: Jeffrey Wilcke <jeffrey@ethereum.org>
Date: Tue, 23 May 2017 10:40:09 +0200
Subject: [PATCH] core/vm: capped int pool
---
core/vm/intpool.go | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/core/vm/intpool.go b/core/vm/intpool.go
index 4f1228e14..384f5df59 100644
--- a/core/vm/intpool.go
+++ b/core/vm/intpool.go
@@ -20,6 +20,8 @@ import "math/big"
var checkVal = big.NewInt(-42)
+const poolLimit = 256
+
// intPool is a pool of big integers that
// can be reused for all big.Int operations.
type intPool struct {
@@ -37,6 +39,10 @@ func (p *intPool) get() *big.Int {
return new(big.Int)
}
func (p *intPool) put(is ...*big.Int) {
+ if len(p.pool.data) > poolLimit {
+ return
+ }
+
for _, i := range is {
// verifyPool is a build flag. Pool verification makes sure the integrity
// of the integer pool by comparing values to a default value.
--
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