src/RangeSet.zig                                                  | 75 +++++++++++++++++++-------------
 src/Sema.zig                                                      | 10 ++---
 test/cases/compile_errors/switch_with_overlapping_case_ranges.zig | 38 +++++++++++++---
 3 files changed, 82 insertions(+), 41 deletions(-)