src/Sema.zig                                              |  58 +++++++++++-------
 test/cases/compile_errors/switch_on_invalid_type.zig      | 103 ++++++++++++++++++++++++++++++++
 test/cases/compile_errors/switch_on_non_packed_struct.zig |  25 --------
 3 files changed, 139 insertions(+), 47 deletions(-)