lib/std/zig/Zir.zig                                         |  2 +-
 src/Sema.zig                                                | 68 +++++++++++++++++---------------
 src/Zcu/PerThread.zig                                       | 19 +++++++++
 test/behavior/slice.zig                                     | 44 +++++++++++++++++++++
 test/cases/compile_errors/deref_slice_and_get_len_field.zig |  2 +-
 test/cases/compile_errors/deref_slice_with_undef_len.zig    | 23 +++++++++++
 test/cases/compile_errors/dereference_slice.zig             |  2 +-
 7 files changed, 126 insertions(+), 34 deletions(-)