undefined-behavior in read mft common(mft CommonLayout

undefined-behavior in read mft common(mft CommonLayout: a task in MiMo-V2.6-RL-oss: Agentic RL Environments (MiMo RL release). UndefinedBehaviorSanitizer: undefined-behavior in function read mft common(mft CommonLayout const, skcms A2B) in file skcms/skcms.cc