Need a consistent way to free memory allocated in the DBMS and passed into the provider

[denis-protivensky]

The sst_request_cb requires allocating memory for sst_req in the DBMS, but the memory is freed in the provider. If the DBMS is built with custom allocator, it leads to malloc/free allocator mismatch and therefore to an undefined behavior.

[ayurchen]

The only way I see around it is to provide a "free" callback to the provider. But its ugly and does not address the real problem: application and library are using different allocators. If there is a reason for the application to "overload" the standard malloc() call, then. apparently, the libraries that it is using should use the same allocator as well.