From c3313d0d418cb2aaaf2226eb0a7729ef567b6afb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?louiz=E2=80=99?= <louiz@louiz.org>
Date: Tue, 5 Dec 2017 01:05:45 +0100
Subject: Always free the PGresult pointer returned by PQexec

Fix a somewhat big memory leak
---
 src/database/postgresql_engine.cpp    | 6 ++++++
 src/database/postgresql_statement.hpp | 5 ++++-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/database/postgresql_engine.cpp b/src/database/postgresql_engine.cpp
index 1c01ed5..4ee4223 100644
--- a/src/database/postgresql_engine.cpp
+++ b/src/database/postgresql_engine.cpp
@@ -1,6 +1,8 @@
 #include <biboumi.h>
 #ifdef PQ_FOUND
 
+#include <utils/scopeguard.hpp>
+
 #include <database/postgresql_engine.hpp>
 
 #include <database/postgresql_statement.hpp>
@@ -53,6 +55,10 @@ std::tuple<bool, std::string> PostgresqlEngine::raw_exec(const std::string& quer
 {
   log_debug("raw_exec:", query);
   PGresult* res = PQexec(this->conn, query.data());
+  auto sg = utils::make_scope_guard([res](){
+      PQclear(res);
+  });
+
   auto res_status = PQresultStatus(res);
   if (res_status != PGRES_COMMAND_OK)
     return std::make_tuple(false, PQresultErrorMessage(res));
diff --git a/src/database/postgresql_statement.hpp b/src/database/postgresql_statement.hpp
index 6e5dec8..30c3ec2 100644
--- a/src/database/postgresql_statement.hpp
+++ b/src/database/postgresql_statement.hpp
@@ -14,7 +14,10 @@ class PostgresqlStatement: public Statement
       conn(conn)
   {}
   ~PostgresqlStatement()
-  {}
+  {
+    PQclear(this->result);
+    this->result = nullptr;
+  }
   PostgresqlStatement(const PostgresqlStatement&) = delete;
   PostgresqlStatement& operator=(const PostgresqlStatement&) = delete;
   PostgresqlStatement(PostgresqlStatement&& other) = delete;
-- 
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