From dea533a53c3c63da32cb7bd84cd606c5b58e65b6 Mon Sep 17 00:00:00 2001
From: Sergey Lisitsyn <lisitsyn.s.o@gmail.com>
Date: Thu, 16 Jun 2016 23:06:51 +0300
Subject: [PATCH] Add wrapper function to capture pointers

This resolves memory leaks in generated examples.

The function is to be deleted once we finish our API
transition.
---
 examples/meta/generator/targets/cpp.json |  4 ++--
 src/shogun/base/some.h                   | 18 ++++++++++++++++++
 2 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/examples/meta/generator/targets/cpp.json b/examples/meta/generator/targets/cpp.json
index 6bd08241372..f5e02d9d458 100644
--- a/examples/meta/generator/targets/cpp.json
+++ b/examples/meta/generator/targets/cpp.json
@@ -10,9 +10,9 @@
     "Comment": "//$comment\n",
     "Init": {
         "Construct": "auto $name = some<C$type>($arguments)",
-        "Copy": "auto $name = $expr"
+        "Copy": "auto $name = wrap($expr)"
     },
-    "Assign": "$name = $expr",
+    "Assign": "$name = wrap($expr)",
     "Type": {
         "RealFeatures": "DenseFeatures<float64_t>",
         "StringCharFeatures": "CStringFeatures<char>",
diff --git a/src/shogun/base/some.h b/src/shogun/base/some.h
index ef0e3cb33d6..eb8094e4965 100644
--- a/src/shogun/base/some.h
+++ b/src/shogun/base/some.h
@@ -124,6 +124,24 @@ namespace shogun
         return Some<T>::from_raw(ptr);
     }
 
+    template <class T>
+    inline T wrap(const T& value)
+    {
+        return value;
+    }
+
+    template <class T>
+    inline Some<T> wrap(T* ptr)
+    {
+        return Some<T>::from_raw(ptr);
+    }
+
+    template <class T>
+    inline Some<T> wrap(const Some<T>& other)
+    {
+        return other;
+    }
+
 };
 
 #endif /* HAVE_CXX11 */