From d974ca322ba89e459470949b300b8b85ece5c69b Mon Sep 17 00:00:00 2001
From: Leonid Yuriev <leo@yuriev.ru>
Date: Sun, 1 Sep 2019 14:04:02 +0300
Subject: [PATCH] mdbx-test: remove `std::unary_function<>` for C++17.

---
 test/keygen.h | 2 +-
 test/test.h   | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/test/keygen.h b/test/keygen.h
index d0299e1e..9852c310 100644
--- a/test/keygen.h
+++ b/test/keygen.h
@@ -93,7 +93,7 @@ struct result {
 
 //-----------------------------------------------------------------------------
 
-struct buffer_deleter : public std::unary_function<void, result *> {
+struct buffer_deleter /* : public std::unary_function<void, result *> */ {
   void operator()(result *buffer) const { free(buffer); }
 };
 
diff --git a/test/test.h b/test/test.h
index fb5ad4ee..53a2e36a 100644
--- a/test/test.h
+++ b/test/test.h
@@ -55,11 +55,11 @@ extern bool progress_indicator;
 
 //-----------------------------------------------------------------------------
 
-struct db_deleter : public std::unary_function<void, MDBX_env *> {
+struct db_deleter /* : public std::unary_function<void, MDBX_env *> */ {
   void operator()(MDBX_env *env) const { mdbx_env_close(env); }
 };
 
-struct txn_deleter : public std::unary_function<void, MDBX_txn *> {
+struct txn_deleter /* : public std::unary_function<void, MDBX_txn *> */ {
   void operator()(MDBX_txn *txn) const {
     int rc = mdbx_txn_abort(txn);
     if (rc)
@@ -67,7 +67,7 @@ struct txn_deleter : public std::unary_function<void, MDBX_txn *> {
   }
 };
 
-struct cursor_deleter : public std::unary_function<void, MDBX_cursor *> {
+struct cursor_deleter /* : public std::unary_function<void, MDBX_cursor *> */ {
   void operator()(MDBX_cursor *cursor) const { mdbx_cursor_close(cursor); }
 };