When building with the v5 toolchain on evergreen, we observe a stringop-overflow warning in this file on these two push_back calls:

1. https://github.com/mongodb/mongo/blob/4ab1147682dcb5a04e73055ea04b5a9008fc28b4/src/mongo/db/query/cost_based_ranker/cbr_test_utils.cpp#L87
2. https://github.com/mongodb/mongo/blob/4ab1147682dcb5a04e73055ea04b5a9008fc28b4/src/mongo/db/query/cost_based_ranker/cbr_test_utils.cpp#L89

We'll have to suppress the error.