src/Sema.zig                                                      | 34 +++++++++++++++++++++++++++-----
 test/cases/compile_errors/enum_value_already_taken.zig            | 18 +++++++++++++++++
 test/cases/compile_errors/stage1/obj/enum_value_already_taken.zig | 18 -----------------
 3 files changed, 47 insertions(+), 23 deletions(-)