Use backing store with lock.

1 files changed, 2 insertions, 1 deletions

diff --git a/searchlib/src/tests/docstore/store_by_bucket/store_by_bucket_test.cpp b/searchlib/src/tests/docstore/store_by_bucket/store_by_bucket_test.cpp
index 816e6933e5c..da900ddecee 100644
--- a/searchlib/src/tests/docstore/store_by_bucket/store_by_bucket_test.cpp
+++ b/searchlib/src/tests/docstore/store_by_bucket/store_by_bucket_test.cpp
@@ -66,7 +66,8 @@ private:
 
 TEST("require that StoreByBucket gives bucket by bucket and ordered within")
 {
-    vespalib::MemoryDataStore backing;
+    std::mutex backing_lock;
+    vespalib::MemoryDataStore backing(vespalib::alloc::Alloc::alloc(256), &backing_lock);
     vespalib::ThreadStackExecutor executor(8, 128_Ki);
     StoreByBucket sbb(backing, executor, CompressionConfig::LZ4);
     for (size_t i(1); i <=500; i++) {