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mdbx-test: add workaround for CLANG/LLVM STL stupidity of std::set<>.

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This commit is contained in:
Leonid Yuriev
2021-07-03 13:01:41 +00:00
parent cf5f31c577
commit c4a696be1d
2 changed files with 27 additions and 7 deletions
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16
test/test.cc
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@@ -197,6 +197,18 @@ int testcase::breakable_commit() {
log_trace(">> txn_commit");
assert(txn_guard);
/* CLANG/LLVM C++ library could stupidly copy std::set<> item-by-item,
* i.e. with insertion(s) & comparison(s), which will cause null dereference
* during call mdbx_cmp() with zero txn. So it is the workaround for this:
* - explicitly make copies of the `speculums`;
* - explicitly move relevant copy after transaction commit. */
SET speculum_committed_copy(ItemCompare(this)),
speculum_copy(ItemCompare(this));
if (need_speculum_assign) {
speculum_committed_copy = speculum_committed;
speculum_copy = speculum;
}
MDBX_txn *txn = txn_guard.release();
txn_inject_writefault(txn);
int rc = mdbx_txn_commit(txn);
@@ -207,9 +219,9 @@ int testcase::breakable_commit() {
if (need_speculum_assign) {
need_speculum_assign = false;
if (unlikely(rc != MDBX_SUCCESS))
speculum = speculum_committed;
speculum = std::move(speculum_committed_copy);
else
speculum_committed = speculum;
speculum_committed = std::move(speculum_copy);
}
log_trace("<< txn_commit: %s", rc ? "failed" : "Ok");