2 Commits

Author SHA1 Message Date
Jack Wrenn
2540070fd4 document & impl the transmutation modeled by BikeshedIntrinsicFrom
Documents that `BikeshedIntrinsicFrom` models transmute-via-union,
which is slightly more expressive than the transmute-via-cast
implemented by `transmute_copy`. Additionally, we provide an
implementation of transmute-via-union as a method on the
`BikeshedIntrinsicFrom` trait with additional documentation on
the boundary between trait invariants and caller obligations.

Whether or not transmute-via-union is the right kind of transmute
to model remains up for discussion [1]. Regardless, it seems wise
to document the present behavior.

[1] https://rust-lang.zulipchat.com/#narrow/stream/216762-project-safe-transmute/topic/What.20'kind'.20of.20transmute.20to.20model.3F/near/426331967
2024-08-23 14:37:36 +00:00
Jubilee Young
d89500843c Move 100 entries from tests/ui into subdirs
- Move super-fast-paren-parsing test into ui/parser
- Move stmt_expr_attrs test into ui/feature-gates
- Move macro tests into ui/macros
- Move global_asm tests into ui/asm
- Move env tests into ui/process
- Move xcrate tests into ui/cross-crate
- Move unop tests into ui/unop
- Move backtrace tests into ui/backtrace
- Move check-static tests into ui/statics
- Move expr tests into ui/expr
- Move optimization fuel tests into ui/fuel
- Move ffi attribute tests into ui/ffi-attrs
- Move suggestion tests into ui/suggestions
- Move main tests into ui/fn-main
- Move lint tests into ui/lint
- Move repr tests into ui/repr
- Move intrinsics tests into ui/intrinsics
- Move tool lint tests into ui/tool-attributes
- Move return tests into ui/return
- Move pattern tests into ui/patttern
- Move range tests into ui/range
- Move foreign-fn tests into ui/foreign
- Move orphan-check tests into ui/coherence
- Move inference tests into ui/inference
- Reduce ROOT_ENTRY_LIMIT
2024-05-20 19:55:59 -07:00