Description of problem: FTBFS on `s390x` due to testing error, indicating upstream endianness bug. Some causes have been isolated, working closely with upstream to produce a fix. Version-Release number of selected component (if applicable): 3.4.2 How reproducible: Always Steps to Reproduce: 1. Building on s390x architecture. Actual results: FTBFS due to a testing error. Expected results: Build passing. Additional info: