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-rw-r--r--compiler/rustc_session/src/session.rs3
1 files changed, 1 insertions, 2 deletions
diff --git a/compiler/rustc_session/src/session.rs b/compiler/rustc_session/src/session.rs
index 65ae666f209..0e15646841e 100644
--- a/compiler/rustc_session/src/session.rs
+++ b/compiler/rustc_session/src/session.rs
@@ -252,8 +252,7 @@ impl Session {
     }
 
     pub fn local_crate_source_file(&self) -> Option<RealFileName> {
-        let path = self.io.input.opt_path()?;
-        Some(RealFileName::LocalPath(path.to_path_buf()))
+        Some(self.source_map().path_mapping().to_real_filename(self.io.input.opt_path()?))
     }
 
     fn check_miri_unleashed_features(&self) -> Option<ErrorGuaranteed> {