src/Sema.zig                                          | 352 +++++++++++++++-----------------
 src/type.zig                                          |  18 ++
 test/behavior/tuple.zig                               |  58 ++++++
 test/cases/compile_errors/offsetOf-bad_field_name.zig |   2 +-
 4 files changed, 247 insertions(+), 183 deletions(-)