From 4708e0cf79b186a46f1ac5f300d2ce74eb9272ba Mon Sep 17 00:00:00 2001
From: Leonid Yuriev <leo@yuriev.ru>
Date: Thu, 17 Jan 2019 23:09:40 +0300
Subject: [PATCH] mdbx-winfdows: fix returning negative value on failure.

Change-Id: Iaf5fb1f0cbcc3c14e2d3edf1f57538ecc0dfdf00
---
 src/mdbx.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/src/mdbx.c b/src/mdbx.c
index 5a7ea680..1f9357d2 100644
--- a/src/mdbx.c
+++ b/src/mdbx.c
@@ -1,4 +1,4 @@
-/*
+/*
  * Copyright 2015-2018 Leonid Yuriev <leo@yuriev.ru>
  * and other libmdbx authors: please see AUTHORS file.
  * All rights reserved.
@@ -5496,7 +5496,7 @@ fail:
 
 int __cold mdbx_env_get_maxkeysize(MDBX_env *env) {
   if (!env || env->me_signature != MDBX_ME_SIGNATURE || !env->me_maxkey_limit)
-    return -MDBX_EINVAL;
+    return (MDBX_EINVAL > 0) ? -MDBX_EINVAL : MDBX_EINVAL;
   return env->me_maxkey_limit;
 }
 
@@ -12466,7 +12466,7 @@ int __cold mdbx_reader_list(MDBX_env *env, MDBX_msg_func *func, void *ctx) {
   int rc = 0, first = 1;
 
   if (unlikely(!env || !func))
-    return -MDBX_EINVAL;
+    return (MDBX_EINVAL > 0) ? -MDBX_EINVAL : MDBX_EINVAL;
 
   if (unlikely(env->me_signature != MDBX_ME_SIGNATURE))
     return MDBX_EBADSIGN;
@@ -12796,7 +12796,7 @@ __attribute__((no_sanitize_thread, noinline))
 int mdbx_txn_straggler(MDBX_txn *txn, int *percent)
 {
   if (unlikely(!txn))
-    return -MDBX_EINVAL;
+    return (MDBX_EINVAL > 0) ? -MDBX_EINVAL : MDBX_EINVAL;
 
   if (unlikely(txn->mt_signature != MDBX_MT_SIGNATURE))
     return MDBX_EBADSIGN;
@@ -13515,7 +13515,7 @@ __cold intptr_t mdbx_limits_keysize_max(intptr_t pagesize) {
   else if (unlikely(pagesize < (intptr_t)MIN_PAGESIZE ||
                     pagesize > (intptr_t)MAX_PAGESIZE ||
                     !mdbx_is_power2((size_t)pagesize)))
-    return -MDBX_EINVAL;
+    return (MDBX_EINVAL > 0) ? -MDBX_EINVAL : MDBX_EINVAL;
 
   return mdbx_maxkey(mdbx_nodemax(pagesize));
 }
@@ -13530,7 +13530,7 @@ __cold intptr_t mdbx_limits_dbsize_min(intptr_t pagesize) {
   else if (unlikely(pagesize < (intptr_t)MIN_PAGESIZE ||
                     pagesize > (intptr_t)MAX_PAGESIZE ||
                     !mdbx_is_power2((size_t)pagesize)))
-    return -MDBX_EINVAL;
+    return (MDBX_EINVAL > 0) ? -MDBX_EINVAL : MDBX_EINVAL;
 
   return MIN_PAGENO * pagesize;
 }
@@ -13541,7 +13541,7 @@ __cold intptr_t mdbx_limits_dbsize_max(intptr_t pagesize) {
   else if (unlikely(pagesize < (intptr_t)MIN_PAGESIZE ||
                     pagesize > (intptr_t)MAX_PAGESIZE ||
                     !mdbx_is_power2((size_t)pagesize)))
-    return -MDBX_EINVAL;
+    return (MDBX_EINVAL > 0) ? -MDBX_EINVAL : MDBX_EINVAL;
 
   const uint64_t limit = MAX_PAGENO * (uint64_t)pagesize;
   return (limit < (intptr_t)MAX_MAPSIZE) ? (intptr_t)limit
@@ -13554,7 +13554,7 @@ __cold intptr_t mdbx_limits_txnsize_max(intptr_t pagesize) {
   else if (unlikely(pagesize < (intptr_t)MIN_PAGESIZE ||
                     pagesize > (intptr_t)MAX_PAGESIZE ||
                     !mdbx_is_power2((size_t)pagesize)))
-    return -MDBX_EINVAL;
+    return (MDBX_EINVAL > 0) ? -MDBX_EINVAL : MDBX_EINVAL;
 
   return pagesize * (MDBX_DPL_TXNFULL - 1);
 }