Summary

When initializing client-side encryption, if the user has not explicitly disabled the spawning of mongocryptd as part of the CSE options, libmongoc will attempt to spawn mongocryptd. If crypt_shared is loaded, libmongoc does not required mongocryptd to perform query analysis, and should not spawn it.

How to Reproduce

If CSE options are set such that mongocryptd would be spawned by libmongoc in the absence of crypt_shared, libmongoc will attempt to spawn mongocryptd regardless of whether crypt_shared is available and loaded.

Additional Background

The specification modifications for the addition of the crypt_shared library as part of encryption mandates that mongocryptd must not be spawned if libmongocrypt reports successfully loaded crypt_shared. The guard for this condition is missing from _mongoc_crypt_new.