- u -

• UINT64_C : mt19937.hh
• UNUSED_ATTR : cxx_versioning_macros.hh
• user_fixable_issue_assert : exit.hh
• user_fixable_issue_exit : exit.hh
• utility_exit : exit.hh
• utility_exit_with_message : exit.hh
• utility_exit_with_message_status : exit.hh
• utility_exit_with_status : exit.hh