8188f6c808
Overhaul filename handling for cross-compiler consistency This PR overhauls the way we handle filenames in the compiler and `rmeta` in order to achieve achieve cross-compiler consistency (ie. having the same path no matter if the filename was created in the current compiler session or is coming from `rmeta`). This is required as some parts of the compiler rely on consistent paths for the soundness of generated code (see rust-lang/rust#148328). In order to achieved consistency multiple steps are being taken by this PR: - by making `RealFileName` immutable - by only having `SourceMap::to_real_filename` create `RealFileName` - currently `RealFileName` can be created from any `Path` and are remapped afterwards, which creates consistency issue - by also making `RealFileName` holds it's working directory, embeddable name and the remapped scopes - this removes the need for a `Session`, to know the current(!) scopes and cwd, which is invalid as they may not be equal to the scopes used when creating the filename In order for `SourceMap::to_real_filename` to know which scopes to apply `FilePathMapping` now takes the current remapping scopes to apply, which makes `FileNameDisplayPreference` and company useless and are removed. This PR is split-up in multiple commits (unfortunately not atomic), but should help review the changes. Unblocks https://github.com/rust-lang/rust/pull/147611 Fixes https://github.com/rust-lang/rust/issues/148328 |
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| .. | ||
| bootstrap | ||
| build_helper | ||
| ci | ||
| doc | ||
| etc | ||
| gcc@0081ca6631 | ||
| librustdoc | ||
| llvm-project@16b5ac8b0a | ||
| rustc-std-workspace | ||
| rustdoc-json-types | ||
| tools | ||
| README.md | ||
| stage0 | ||
| version | ||
This directory contains some source code for the Rust project, including:
- The bootstrapping build system
- Various submodules for tools, like cargo, tidy, etc.
For more information on how various parts of the compiler work, see the rustc dev guide.