- detect and forbid non-positive size casts
- detect and forbid negative struct pattern literal indices
- avoid invalid constant folding of negative based literals
Data.Hashable can produce hashes differing little in their upper bits if
only the last character of the string is changed. Because we were using
the upper bits of the hash in shortHash, this could lead to avoidable
hash collisions. This change includes minor simplification optimizations
which surfaced this collision in the existing struct_ident_scope test.
- ensure concats and repeats stay unsigned
- defer unbased-unsized conversion to enable cast semantics
- disable inaccurate folding of binary operations of based numbers
- fix typeof and size cast binop signedness logic
- fix typeof $unsigned and $signed
- test harness allows production of `integer unsigned`
- number literals are parsed rather than stored as strings
- fix array query functions used on non-trivial number literals
- more efficient expression simplification recursion
- expanded constant folding scenarios
Zachary Snow