From 535ad41ae6bc0f7499c084262abf109842576620 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, 2 Jun 2022 16:50:11 +0300
Subject: [PATCH] mdbx: made internal `noop` macro compatible with MSVC.

---
 src/defs.h | 6 +++---
 test/log.h | 5 ++++-
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/defs.h b/src/defs.h
index 92c16ed1..6553d5ad 100644
--- a/src/defs.h
+++ b/src/defs.h
@@ -104,7 +104,7 @@
 #endif /* __must_check_result */
 
 #if !defined(__noop) && !defined(_MSC_VER)
-#   define __noop(...) do {} while(0)
+#   define __noop do {} while(0)
 #endif /* __noop */
 
 #if defined(__fallthrough) &&                                                  \
@@ -136,7 +136,7 @@
 #   elif defined(_MSC_VER)
 #       define __unreachable() __assume(0)
 #   else
-#       define __unreachable() __noop()
+#       define __unreachable() do {} while(1)
 #   endif
 #endif /* __unreachable */
 
@@ -144,7 +144,7 @@
 #   if defined(__GNUC__) || defined(__clang__) || __has_builtin(__builtin_prefetch)
 #       define __prefetch(ptr) __builtin_prefetch(ptr)
 #   else
-#       define __prefetch(ptr) __noop(ptr)
+#       define __prefetch(ptr) do { (void)(ptr); } while(0)
 #   endif
 #endif /* __prefetch */
 
diff --git a/test/log.h b/test/log.h
index b7dcce8e..bc9f4579 100644
--- a/test/log.h
+++ b/test/log.h
@@ -85,6 +85,9 @@ public:
 
 } // namespace logging
 
+void MDBX_PRINTF_ARGS(1, 2) static inline log_null(const char *msg, ...) {
+  return (void)msg;
+}
 void MDBX_PRINTF_ARGS(1, 2) log_extra(const char *msg, ...);
 void MDBX_PRINTF_ARGS(1, 2) log_trace(const char *msg, ...);
 void MDBX_PRINTF_ARGS(1, 2) log_debug(const char *msg, ...);
@@ -100,5 +103,5 @@ bool log_enabled(const logging::loglevel priority);
 #ifdef _DEBUG
 #define TRACE(...) log_trace(__VA_ARGS__)
 #else
-#define TRACE(...) __noop(__VA_ARGS__)
+#define TRACE(...) log_null(__VA_ARGS__)
 #endif