From: Gunnar Beutner <gunnar@beutner.name>
Date: Mon, 1 Feb 2016 11:58:42 +0000 (+0100)
Subject: Fix incorrect memcpy() with overlapping buffers
X-Git-Tag: v2.5.0~568
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=e6a972f97554a32bf06124d4bb97038f050cbf68;p=icinga2

Fix incorrect memcpy() with overlapping buffers

refs #11014
---

diff --git a/lib/base/fifo.cpp b/lib/base/fifo.cpp
index abe2c4dfd..7add8bf68 100644
--- a/lib/base/fifo.cpp
+++ b/lib/base/fifo.cpp
@@ -68,7 +68,7 @@ void FIFO::ResizeBuffer(size_t newSize, bool decrease)
 void FIFO::Optimize(void)
 {
 	if (m_Offset - m_DataSize > 1024) {
-		std::memcpy(m_Buffer, m_Buffer + m_Offset, m_DataSize);
+		std::memmove(m_Buffer, m_Buffer + m_Offset, m_DataSize);
 		m_Offset = 0;
 
 		if (m_DataSize > 0)