src/Sema.zig                                              | 282 +++++++++++++++++---------------
 test/behavior/ptrcast.zig                                 |  44 +++++
 test/cases/compile_errors/cast_ptr_to_slice_of_larger.zig |   8 +
 test/cases/compile_errors/slice_cast_change_len.zig       |   8 +-
 4 files changed, 204 insertions(+), 138 deletions(-)