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mdbx: fix rare/specific unexpected assertion failure bmi > 0 on 32-bit debug builds.

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Леонид Юрьев (Leonid Yuriev)
2025-09-11 19:06:14 +03:00
parent f2a5ca26a6
commit bdbbf3db68
2 changed files with 2 additions and 2 deletions
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2
src/dbi.c
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@@ -5,7 +5,7 @@
#if MDBX_ENABLE_DBI_SPARSE #if MDBX_ENABLE_DBI_SPARSE
size_t dbi_bitmap_ctz_fallback(const MDBX_txn *txn, intptr_t bmi) { size_t dbi_bitmap_ctz_fallback(const MDBX_txn *txn, intptr_t bmi) {
tASSERT(txn, bmi > 0); tASSERT(txn, bmi != 0);
bmi &= -bmi; bmi &= -bmi;
if (sizeof(txn->dbi_sparse[0]) > 4) { if (sizeof(txn->dbi_sparse[0]) > 4) {
static const uint8_t debruijn_ctz64[64] = {0, 1, 2, 53, 3, 7, 54, 27, 4, 38, 41, 8, 34, 55, 48, 28, static const uint8_t debruijn_ctz64[64] = {0, 1, 2, 53, 3, 7, 54, 27, 4, 38, 41, 8, 34, 55, 48, 28,

2
src/dbi.h
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@@ -11,7 +11,7 @@ MDBX_NOTHROW_CONST_FUNCTION MDBX_MAYBE_UNUSED MDBX_INTERNAL size_t dbi_bitmap_ct
intptr_t bmi); intptr_t bmi);
static inline size_t dbi_bitmap_ctz(const MDBX_txn *txn, intptr_t bmi) { static inline size_t dbi_bitmap_ctz(const MDBX_txn *txn, intptr_t bmi) {
tASSERT(txn, bmi > 0); tASSERT(txn, bmi != 0);
STATIC_ASSERT(sizeof(bmi) >= sizeof(txn->dbi_sparse[0])); STATIC_ASSERT(sizeof(bmi) >= sizeof(txn->dbi_sparse[0]));
#if __GNUC_PREREQ(4, 1) || __has_builtin(__builtin_ctzl) #if __GNUC_PREREQ(4, 1) || __has_builtin(__builtin_ctzl)
if (sizeof(txn->dbi_sparse[0]) <= sizeof(int)) if (sizeof(txn->dbi_sparse[0]) <= sizeof(int))