rust/compiler/rustc_symbol_mangling
Matthew Maurer 6aa89f684e Track reason for creating a ReifyShim
KCFI needs to be able to tell which kind of `ReifyShim` it is examining
in order to decide whether to use a concrete type (`FnPtr` case) or an
abstract case (`Vtable` case). You can *almost* tell this from context,
but there is one case where you can't - if a trait has a method which is
*not* `#[track_caller]`, with an impl that *is* `#[track_caller]`, both
the vtable and a function pointer created from that method will be
`ReifyShim(def_id)`.

Currently, the reason is optional to ensure no additional unique
`ReifyShim`s are added without KCFI on. However, the case in which an
extra `ReifyShim` is created is sufficiently rare that this may be worth
revisiting to reduce complexity.
2024-04-02 19:11:16 +00:00
..
src Track reason for creating a ReifyShim 2024-04-02 19:11:16 +00:00
Cargo.toml CFI: Support arbitrary receivers 2024-03-24 22:46:48 +00:00