src/Sema.zig                                                  | 1048 +++++++++++++++++---------------
 test/behavior/switch.zig                                      |   33 +
 test/cases/compile_errors/switch_capture_packed_union_tag.zig |   15 -
 test/cases/compile_errors/switch_invalid_tag_capture.zig      |   78 +++
 4 files changed, 665 insertions(+), 509 deletions(-)