mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-22 14:55:26 +00:00
cfb5ae26a4
add `depth_limit` in `QueryVTable` to avoid entering a new tcx in `layout_of` Fixes #49735 Updates #48685 The `layout_of` query needs to check whether it overflows the depth limit, and the current implementation needs to create a new `ImplicitCtxt` inside `layout_of`. However, `start_query` will already create a new `ImplicitCtxt`, so we can check the depth limit in `start_query`. We can tell whether we need to check the depth limit simply by whether the return value of `to_debug_str` of the query is `layout_of`. But I think adding the `depth_limit` field in `QueryVTable` may be more elegant and more scalable. |
||
|---|---|---|
| .. | ||
| benches | ||
| src | ||
| Cargo.toml | ||
| README.md | ||
For more information about how rustc works, see the rustc dev guide.