From 3a166e19703780dff88bd12a95e934bae849a44c Mon Sep 17 00:00:00 2001
From: Leo Yuriev <leo@yuriev.ru>
Date: Thu, 25 May 2017 03:41:42 +0300
Subject: [PATCH] test: temporary crutch.

---
 src/bits.h | 8 ++++++++
 src/mdbx.c | 2 ++
 2 files changed, 10 insertions(+)

diff --git a/src/bits.h b/src/bits.h
index ca88f686..3a566cab 100644
--- a/src/bits.h
+++ b/src/bits.h
@@ -252,8 +252,16 @@ typedef struct MDBX_meta {
 #define MDBX_DATASIGN_NONE 0u
 #define MDBX_DATASIGN_WEAK 1u
   volatile uint64_t mm_datasync_sign;
+
+#define MDBX_TEMPORARY_CRUTCH FIXME
+#ifndef MDBX_TEMPORARY_CRUTCH
 #define SIGN_IS_WEAK(sign) ((sign) == MDBX_DATASIGN_WEAK)
 #define SIGN_IS_STEADY(sign) ((sign) > MDBX_DATASIGN_WEAK)
+#else
+#define SIGN_IS_WEAK(sign) (false && (sign) == MDBX_DATASIGN_WEAK)
+#define SIGN_IS_STEADY(sign) (true || (sign) > MDBX_DATASIGN_WEAK)
+#endif /* FIXME: MDBX_TEMPORARY_CRUTCH */
+
 #define META_IS_WEAK(meta) SIGN_IS_WEAK((meta)->mm_datasync_sign)
 #define META_IS_STEADY(meta) SIGN_IS_STEADY((meta)->mm_datasync_sign)
   volatile mdbx_canary mm_canary;
diff --git a/src/mdbx.c b/src/mdbx.c
index a821f2b3..82d6a1ee 100644
--- a/src/mdbx.c
+++ b/src/mdbx.c
@@ -3223,11 +3223,13 @@ static int __cold mdbx_read_header(MDBX_env *env, MDBX_meta *meta) {
       return MDBX_VERSION_MISMATCH;
     }
 
+#ifndef MDBX_TEMPORARY_CRUTCH
     /* LY: check signature as a checksum */
     if (META_IS_STEADY(m) && m->mm_datasync_sign != mdbx_meta_sign(m)) {
       mdbx_debug("steady-meta[%u] has invalid checksum", offset);
       continue;
     }
+#endif /* FIXME: MDBX_TEMPORARY_CRUTCH */
 
     if (mdbx_meta_lt(meta, m)) {
       *meta = *m;