From bf297a0742593f6cccd47da74a9ba70f5c2f461e Mon Sep 17 00:00:00 2001
From: nihui <shuizhuyuanluo@126.com>
Date: Thu, 27 Aug 2020 10:52:08 +0800
Subject: [PATCH] fix sprintf overflow for the zero terminator

---
 src/datareader.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/datareader.cpp b/src/datareader.cpp
index 36ce916a4..6260eea11 100644
--- a/src/datareader.cpp
+++ b/src/datareader.cpp
@@ -63,7 +63,7 @@ int DataReaderFromMemory::scan(const char* format, void* p) const
 {
     size_t fmtlen = strlen(format);
 
-    char* format_with_n = new char[fmtlen + 3];
+    char* format_with_n = new char[fmtlen + 4];
     sprintf(format_with_n, "%s%%n", format);
 
     int nconsumed = 0;