From a29bfb0219eb53b79dbb6d88150c75fba762ad21 Mon Sep 17 00:00:00 2001
From: falkTX <falktx@gmail.com>
Date: Mon, 8 Jan 2018 22:02:09 +0100
Subject: [PATCH] Fix memory leak in carla-plugin pipe usage Fixes #565

---
 source/backend/CarlaUtils.cpp | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/source/backend/CarlaUtils.cpp b/source/backend/CarlaUtils.cpp
index 1d2397bac..2c90fd288 100644
--- a/source/backend/CarlaUtils.cpp
+++ b/source/backend/CarlaUtils.cpp
@@ -559,14 +559,26 @@ public:
     CarlaPipeClientPlugin(const CarlaPipeCallbackFunc callbackFunc, void* const callbackPtr) noexcept
         : CarlaPipeClient(),
           fCallbackFunc(callbackFunc),
-          fCallbackPtr(callbackPtr)
+          fCallbackPtr(callbackPtr),
+          fLastReadLine(nullptr)
     {
         CARLA_SAFE_ASSERT(fCallbackFunc != nullptr);
     }
 
+    ~CarlaPipeClientPlugin() override
+    {
+        if (fLastReadLine != nullptr)
+        {
+            delete[] fLastReadLine;
+            fLastReadLine = nullptr;
+        }
+    }
+
     const char* readlineblock(const uint timeout) noexcept
     {
-        return CarlaPipeClient::_readlineblock(timeout);
+        delete[] fLastReadLine;
+        fLastReadLine = CarlaPipeClient::_readlineblock(timeout);
+        return fLastReadLine;
     }
 
     bool msgReceived(const char* const msg) noexcept
@@ -584,6 +596,7 @@ public:
 private:
     const CarlaPipeCallbackFunc fCallbackFunc;
     void* const fCallbackPtr;
+    const char* fLastReadLine;
 
     CARLA_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(CarlaPipeClientPlugin)
 };