From d14ca5cc4ffa3e7bfa66fc2d3442471cf353d976 Mon Sep 17 00:00:00 2001
From: Leonid Yuriev <leo@yuriev.ru>
Date: Sun, 7 Jan 2018 02:56:06 +0300
Subject: [PATCH] mdbx: fix _InterlockedExchangeAdd64 for some 32-bit SDKs.

Change-Id: I18280e8ef6432b9db3c5073fd59eaa102462f98d
---
 src/osal.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/osal.h b/src/osal.h
index 871e52b0..7951434a 100644
--- a/src/osal.h
+++ b/src/osal.h
@@ -569,8 +569,12 @@ static __inline uint64_t mdbx_atomic_add64(volatile uint64_t *p, uint64_t v) {
   return __sync_fetch_and_add(p, v);
 #else
 #ifdef _MSC_VER
+#ifdef _WIN64
   return _InterlockedExchangeAdd64((volatile int64_t *)p, v);
+#else
+  return InterlockedExchangeAdd64((volatile int64_t *)p, v);
 #endif
+#endif /* _MSC_VER */
 #ifdef __APPLE__
   return OSAtomicAdd64(v, (volatile int64_t *)p);
 #endif