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mdbx: fix SIGSEGV in case mdbx_env_close_ex() called without mdbx_env_open().

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This commit is contained in:
Leo Yuriev 2017-12-20 14:22:37 +03:00
parent 3e9308eb0e
commit 24a8bdec49
1 changed files with 3 additions and 2 deletions
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5
src/mdbx.c
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@ -5387,8 +5387,9 @@ int __cold mdbx_env_close_ex(MDBX_env *env, int dont_sync) {
if (unlikely(env->me_signature != MDBX_ME_SIGNATURE)) if (unlikely(env->me_signature != MDBX_ME_SIGNATURE))
return MDBX_EBADSIGN; return MDBX_EBADSIGN;
if ((env->me_flags & MDBX_RDONLY) == 0) { if (env->me_lck && (env->me_flags & MDBX_RDONLY) == 0) {
if (env->me_txn0->mt_owner && env->me_txn0->mt_owner != mdbx_thread_self()) if (env->me_txn0 && env->me_txn0->mt_owner &&
env->me_txn0->mt_owner != mdbx_thread_self())
return MDBX_BUSY; return MDBX_BUSY;
if (!dont_sync) if (!dont_sync)
rc = mdbx_env_sync(env, true); rc = mdbx_env_sync(env, true);