e1ff91f439
Fix `--remap-path-prefix` not correctly remapping `rust-src` component paths and unify handling of path mapping with virtualized paths This PR fixes #73167 ("Binaries end up containing path to the rust-src component despite `--remap-path-prefix`") by preventing real local filesystem paths from reaching compilation output if the path is supposed to be remapped. `RealFileName::Named` introduced in #72767 is now renamed as `LocalPath`, because this variant wraps a (most likely) valid local filesystem path. `RealFileName::Devirtualized` is renamed as `Remapped` to be used for remapped path from a real path via `--remap-path-prefix` argument, as well as real path inferred from a virtualized (during compiler bootstrapping) `/rustc/...` path. The `local_path` field is now an `Option<PathBuf>`, as it will be set to `None` before serialisation, so it never reaches any build output. Attempting to serialise a non-`None` `local_path` will cause an assertion faliure. When a path is remapped, a `RealFileName::Remapped` variant is created. The original path is preserved in `local_path` field and the remapped path is saved in `virtual_name` field. Previously, the `local_path` is directly modified which goes against its purpose of "suitable for reading from the file system on the local host". `rustc_span::SourceFile`'s fields `unmapped_path` (introduced by #44940) and `name_was_remapped` (introduced by #41508 when `--remap-path-prefix` feature originally added) are removed, as these two pieces of information can be inferred from the `name` field: if it's anything other than a `FileName::Real(_)`, or if it is a `FileName::Real(RealFileName::LocalPath(_))`, then clearly `name_was_remapped` would've been false and `unmapped_path` would've been `None`. If it is a `FileName::Real(RealFileName::Remapped{local_path, virtual_name})`, then `name_was_remapped` would've been true and `unmapped_path` would've been `Some(local_path)`. cc `@eddyb` who implemented `/rustc/...` path devirtualisation |
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rustc | ||
rustc_apfloat | ||
rustc_arena | ||
rustc_ast | ||
rustc_ast_lowering | ||
rustc_ast_passes | ||
rustc_ast_pretty | ||
rustc_attr | ||
rustc_builtin_macros | ||
rustc_codegen_cranelift | ||
rustc_codegen_llvm | ||
rustc_codegen_ssa | ||
rustc_data_structures | ||
rustc_driver | ||
rustc_error_codes | ||
rustc_errors | ||
rustc_expand | ||
rustc_feature | ||
rustc_fs_util | ||
rustc_graphviz | ||
rustc_hir | ||
rustc_hir_pretty | ||
rustc_incremental | ||
rustc_index | ||
rustc_infer | ||
rustc_interface | ||
rustc_lexer | ||
rustc_lint | ||
rustc_lint_defs | ||
rustc_llvm | ||
rustc_macros | ||
rustc_metadata | ||
rustc_middle | ||
rustc_mir | ||
rustc_mir_build | ||
rustc_parse | ||
rustc_parse_format | ||
rustc_passes | ||
rustc_plugin_impl | ||
rustc_privacy | ||
rustc_query_impl | ||
rustc_query_system | ||
rustc_resolve | ||
rustc_save_analysis | ||
rustc_serialize | ||
rustc_session | ||
rustc_span | ||
rustc_symbol_mangling | ||
rustc_target | ||
rustc_trait_selection | ||
rustc_traits | ||
rustc_ty_utils | ||
rustc_type_ir | ||
rustc_typeck |