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mdbx: add explicit memset() for debugging.

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Леонид Юрьев (Leonid Yuriev) 2022-03-25 13:24:58 +03:00
parent d522069080
commit fef90d2a3c
1 changed files with 8 additions and 0 deletions
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8
src/core.c
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@ -7281,6 +7281,10 @@ static int mdbx_cursor_shadow(MDBX_txn *parent, MDBX_txn *nested) {
bk = mdbx_malloc(size); bk = mdbx_malloc(size);
if (unlikely(!bk)) if (unlikely(!bk))
return MDBX_ENOMEM; return MDBX_ENOMEM;
#if MDBX_DEBUG
memset(bk, 0xCD, size);
VALGRIND_MAKE_MEM_UNDEFINED(bk, size);
#endif /* MDBX_DEBUG */
*bk = *mc; *bk = *mc;
mc->mc_backup = bk; mc->mc_backup = bk;
/* Kill pointers into src to reduce abuse: The /* Kill pointers into src to reduce abuse: The
@ -8137,6 +8141,10 @@ int mdbx_txn_begin_ex(MDBX_env *env, MDBX_txn *parent, MDBX_txn_flags_t flags,
mdbx_debug("calloc: %s", "failed"); mdbx_debug("calloc: %s", "failed");
return MDBX_ENOMEM; return MDBX_ENOMEM;
} }
#if MDBX_DEBUG
memset(txn, 0xCD, size);
VALGRIND_MAKE_MEM_UNDEFINED(txn, size);
#endif /* MDBX_DEBUG */
memset(txn, 0, tsize); memset(txn, 0, tsize);
txn->mt_dbxs = env->me_dbxs; /* static */ txn->mt_dbxs = env->me_dbxs; /* static */
txn->mt_dbs = (MDBX_db *)((char *)txn + tsize); txn->mt_dbs = (MDBX_db *)((char *)txn + tsize);