fixup

compiler/rustc_expand/src/proc_macro_server.rs

@@ -19,11 +19,6 @@ use rustc_span::symbol::{self, sym, Symbol};
 use rustc_span::{BytePos, FileName, Pos, SourceFile, Span};
 use smallvec::{smallvec, SmallVec};
 use std::ops::{Bound, Range};
-use std::{path, ascii, panic};
-use pm::bridge::{
-    server, DelimSpan, ExpnGlobals, Group, Ident, LitKind, Literal, Punct, TokenTree,
-};
-use pm::{Delimiter, Level, LineColumn};
 
 trait FromInternal<T> {
     fn from_internal(x: T) -> Self;
@@ -408,7 +403,7 @@ impl server::FreeFunctions for Rustc<'_, '_> {
     }
 
     fn track_fs_path(&mut self, path: &str) {
-        self.sess().file_depinfo.borrow_mut().insert(path::PathBuf::from(path));
+        self.sess().file_depinfo.borrow_mut().insert(Symbol::intern(path));
     }
 
     fn literal_from_str(&mut self, s: &str) -> Result<Literal<Self::Span, Self::Symbol>, ()> {

compiler/rustc_session/src/parse.rs

@@ -21,7 +21,6 @@ use rustc_span::source_map::{FilePathMapping, SourceMap};
 use rustc_span::{Span, Symbol};
 
 use rustc_ast::attr::AttrIdGenerator;
-use std::path;
 use std::str;
 
 /// The set of keys (and, optionally, values) that define the compilation
@@ -210,9 +209,7 @@ pub struct ParseSess {
     /// Environment variables accessed during the build and their values when they exist.
     pub env_depinfo: Lock<FxHashSet<(Symbol, Option<Symbol>)>>,
     /// File paths accessed during the build.
-    pub file_depinfo: Lock<FxHashSet<path::PathBuf>>,
-    /// All the type ascriptions expressions that have had a suggestion for likely path typo.
-    pub type_ascription_path_suggestions: Lock<FxHashSet<Span>>,
+    pub file_depinfo: Lock<FxHashSet<Symbol>>,
     /// Whether cfg(version) should treat the current release as incomplete
     pub assume_incomplete_release: bool,
     /// Spans passed to `proc_macro::quote_span`. Each span has a numerical