rust/compiler/rustc_passes
Matthias Krüger 90dd7c03af
Rollup merge of #89359 - fee1-dead:const-it, r=oli-obk
Various fixes for const_trait_impl

A few problems I found while making `Iterator` easier to const-implement.

1. More generous `~const Drop` check.

We check for nested fields with caller bounds.

For example, an ADT type with fields of types `A`, `B`, `C`, check if all of them are either:
 - Bounded (`A: ~const Drop`, `B: Copy`)
 - Known to be able to destruct at compile time (`C = i32`, `struct C(i32)`, `C = some_fn`)

2. Don't treat trait functions marked with `#[default_method_body_is_const]` as stable const fns when checking `const_for` and `const_try` feature gates.

I think anyone can review this, so no r? this time.
2021-11-25 15:05:35 +01:00
..
src Rollup merge of #89359 - fee1-dead:const-it, r=oli-obk 2021-11-25 15:05:35 +01:00
Cargo.toml Migrate to 2021 2021-09-20 22:21:42 -04:00