From fe862c5ad4bdce6bcc3bf8712d9472561b270c02 Mon Sep 17 00:00:00 2001
From: practicalswift <practicalswift@users.noreply.github.com>
Date: Mon, 26 Jun 2017 16:00:25 +0200
Subject: [PATCH] Avoid division by zero in the case of a corrupt estimates
 file

---
 src/policy/fees.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/policy/fees.cpp b/src/policy/fees.cpp
index dcf49de5f1c..c7e57671c0e 100644
--- a/src/policy/fees.cpp
+++ b/src/policy/fees.cpp
@@ -180,6 +180,7 @@ TxConfirmStats::TxConfirmStats(const std::vector<double>& defaultBuckets,
     : buckets(defaultBuckets), bucketMap(defaultBucketMap)
 {
     decay = _decay;
+    assert(_scale != 0 && "_scale must be non-zero");
     scale = _scale;
     confAvg.resize(maxPeriods);
     for (unsigned int i = 0; i < maxPeriods; i++) {
@@ -418,6 +419,9 @@ void TxConfirmStats::Read(CAutoFile& filein, int nFileVersion, size_t numBuckets
             throw std::runtime_error("Corrupt estimates file. Decay must be between 0 and 1 (non-inclusive)");
         }
         filein >> scale;
+        if (scale == 0) {
+            throw std::runtime_error("Corrupt estimates file. Scale must be non-zero");
+        }
     }
 
     filein >> avg;