Merge pull request #2705 from robbak/crash_zero_size_peers.dat

Don't attempt to resize vector to negative size.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/db.cpp b/src/db.cpp
index 3133d99bf8..fd4c67d552 100644
--- a/src/db.cpp
+++ b/src/db.cpp
@@ -541,6 +541,8 @@ bool CAddrDB::Read(CAddrMan& addr)
     // use file size to size memory buffer
     int fileSize = GetFilesize(filein);
     int dataSize = fileSize - sizeof(uint256);
+    //Don't try to resize to a negative number if file is small
+    if ( dataSize < 0 ) dataSize = 0;
     vector<unsigned char> vchData;
     vchData.resize(dataSize);
     uint256 hashIn;