From 15bd9cfc89e2a0875342030d4e335f4dce3a2c96 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=9B=D0=B5=D0=BE=D0=BD=D0=B8=D0=B4=20=D0=AE=D1=80=D1=8C?=
 =?UTF-8?q?=D0=B5=D0=B2=20=28Leonid=20Yuriev=29?= <leo@yuriev.ru>
Date: Thu, 20 Mar 2025 00:52:16 +0300
Subject: [PATCH] =?UTF-8?q?mdbx:=20=D1=83=D0=B4=D0=B0=D0=BB=D0=B5=D0=BD?=
 =?UTF-8?q?=D0=B8=D0=B5=20`const`=20=D1=83=20=D1=82=D1=80=D0=B0=D0=BD?=
 =?UTF-8?q?=D0=B7=D0=B0=D0=BA=D1=86=D0=B8=D0=B8=20=D0=B2=20`cursor=5Fbind(?=
 =?UTF-8?q?)`=20=D0=B8=20`cursor=5Frenew()`=20(backport).?=
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---
 mdbx.h           | 6 +++---
 mdbx.h++         | 8 ++++----
 src/api-cursor.c | 6 +++---
 3 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/mdbx.h b/mdbx.h
index 99a34f49..728e6eb0 100644
--- a/mdbx.h
+++ b/mdbx.h
@@ -5131,7 +5131,7 @@ MDBX_NOTHROW_PURE_FUNCTION LIBMDBX_API void *mdbx_cursor_get_userctx(const MDBX_
  * \retval MDBX_THREAD_MISMATCH  Given transaction is not owned
  *                               by current thread.
  * \retval MDBX_EINVAL  An invalid parameter was specified. */
-LIBMDBX_API int mdbx_cursor_bind(const MDBX_txn *txn, MDBX_cursor *cursor, MDBX_dbi dbi);
+LIBMDBX_API int mdbx_cursor_bind(MDBX_txn *txn, MDBX_cursor *cursor, MDBX_dbi dbi);
 
 /** \brief Unbind cursor from a transaction.
  * \ingroup c_cursors
@@ -5200,7 +5200,7 @@ LIBMDBX_API int mdbx_cursor_reset(MDBX_cursor *cursor);
  * \retval MDBX_THREAD_MISMATCH  Given transaction is not owned
  *                               by current thread.
  * \retval MDBX_EINVAL  An invalid parameter was specified. */
-LIBMDBX_API int mdbx_cursor_open(const MDBX_txn *txn, MDBX_dbi dbi, MDBX_cursor **cursor);
+LIBMDBX_API int mdbx_cursor_open(MDBX_txn *txn, MDBX_dbi dbi, MDBX_cursor **cursor);
 
 /** \brief Close a cursor handle.
  * \ingroup c_cursors
@@ -5288,7 +5288,7 @@ LIBMDBX_INLINE_API(int, mdbx_txn_release_all_cursors, (const MDBX_txn *txn, bool
  * \retval MDBX_EINVAL  An invalid parameter was specified.
  * \retval MDBX_BAD_DBI The cursor was not bound to a DBI-handle
  *                      or such a handle became invalid. */
-LIBMDBX_API int mdbx_cursor_renew(const MDBX_txn *txn, MDBX_cursor *cursor);
+LIBMDBX_API int mdbx_cursor_renew(MDBX_txn *txn, MDBX_cursor *cursor);
 
 /** \brief Return the cursor's transaction handle.
  * \ingroup c_cursors
diff --git a/mdbx.h++ b/mdbx.h++
index c0226157..e993f17f 100644
--- a/mdbx.h++
+++ b/mdbx.h++
@@ -4474,11 +4474,11 @@ public:
 
   /// \brief Renew/bind a cursor with a new transaction and previously used
   /// key-value map handle.
-  inline void renew(const ::mdbx::txn &txn);
+  inline void renew(::mdbx::txn &txn);
 
   /// \brief Bind/renew a cursor with a new transaction and specified key-value
   /// map handle.
-  inline void bind(const ::mdbx::txn &txn, ::mdbx::map_handle map_handle);
+  inline void bind(::mdbx::txn &txn, ::mdbx::map_handle map_handle);
 
   /// \brief Unbind cursor from a transaction.
   inline void unbind();
@@ -6166,9 +6166,9 @@ inline cursor::estimate_result cursor::estimate(move_operation operation) const
   return estimate_result(*this, operation);
 }
 
-inline void cursor::renew(const ::mdbx::txn &txn) { error::success_or_throw(::mdbx_cursor_renew(txn, handle_)); }
+inline void cursor::renew(::mdbx::txn &txn) { error::success_or_throw(::mdbx_cursor_renew(txn, handle_)); }
 
-inline void cursor::bind(const ::mdbx::txn &txn, ::mdbx::map_handle map_handle) {
+inline void cursor::bind(::mdbx::txn &txn, ::mdbx::map_handle map_handle) {
   error::success_or_throw(::mdbx_cursor_bind(txn, handle_, map_handle.dbi));
 }
 
diff --git a/src/api-cursor.c b/src/api-cursor.c
index 1fefaf2a..9176b42c 100644
--- a/src/api-cursor.c
+++ b/src/api-cursor.c
@@ -23,7 +23,7 @@ MDBX_cursor *mdbx_cursor_create(void *context) {
   return &couple->outer;
 }
 
-int mdbx_cursor_renew(const MDBX_txn *txn, MDBX_cursor *mc) {
+int mdbx_cursor_renew(MDBX_txn *txn, MDBX_cursor *mc) {
   return likely(mc) ? mdbx_cursor_bind(txn, mc, (kvx_t *)mc->clc - txn->env->kvs) : LOG_IFERR(MDBX_EINVAL);
 }
 
@@ -40,7 +40,7 @@ int mdbx_cursor_reset(MDBX_cursor *mc) {
   return MDBX_SUCCESS;
 }
 
-int mdbx_cursor_bind(const MDBX_txn *txn, MDBX_cursor *mc, MDBX_dbi dbi) {
+int mdbx_cursor_bind(MDBX_txn *txn, MDBX_cursor *mc, MDBX_dbi dbi) {
   if (unlikely(!mc))
     return LOG_IFERR(MDBX_EINVAL);
 
@@ -130,7 +130,7 @@ int mdbx_cursor_unbind(MDBX_cursor *mc) {
   return MDBX_SUCCESS;
 }
 
-int mdbx_cursor_open(const MDBX_txn *txn, MDBX_dbi dbi, MDBX_cursor **ret) {
+int mdbx_cursor_open(MDBX_txn *txn, MDBX_dbi dbi, MDBX_cursor **ret) {
   if (unlikely(!ret))
     return LOG_IFERR(MDBX_EINVAL);
   *ret = nullptr;