3 files changed, 10 insertions, 0 deletions
diff --git a/src/librustdoc/config.rs b/src/librustdoc/config.rs
index 1ce7efdfc20..974dc1c5135 100644
--- a/src/librustdoc/config.rs
+++ b/src/librustdoc/config.rs
@@ -157,6 +157,12 @@ pub(crate) struct Options {
     /// Note: this field is duplicated in `RenderOptions` because it's useful
     /// to have it in both places.
     pub(crate) unstable_features: rustc_feature::UnstableFeatures,
+
+    /// All commandline args used to invoke the compiler, with @file args fully expanded.
+    /// This will only be used within debug info, e.g. in the pdb file on windows
+    /// This is mainly useful for other tools that reads that debuginfo to figure out
+    /// how to call the compiler with the same arguments.
+    pub(crate) expanded_args: Vec<String>,
 }
 
 impl fmt::Debug for Options {
@@ -744,6 +750,7 @@ impl Options {
             json_unused_externs,
             scrape_examples_options,
             unstable_features,
+            expanded_args: args,
         };
         let render_options = RenderOptions {
             output,
diff --git a/src/librustdoc/core.rs b/src/librustdoc/core.rs
index eadff37b592..7cd25ef444b 100644
--- a/src/librustdoc/core.rs
+++ b/src/librustdoc/core.rs
@@ -194,6 +194,7 @@ pub(crate) fn create_config(
         describe_lints,
         lint_cap,
         scrape_examples_options,
+        expanded_args,
         ..
     }: RustdocOptions,
     RenderOptions { document_private, .. }: &RenderOptions,
@@ -291,6 +292,7 @@ pub(crate) fn create_config(
         make_codegen_backend: None,
         registry: rustc_driver::diagnostics_registry(),
         ice_file: None,
+        expanded_args,
     }
 }
 
diff --git a/src/librustdoc/doctest.rs b/src/librustdoc/doctest.rs
index 36d5adb6304..bb7d26c541b 100644
--- a/src/librustdoc/doctest.rs
+++ b/src/librustdoc/doctest.rs
@@ -109,6 +109,7 @@ pub(crate) fn run(options: RustdocOptions) -> Result<(), ErrorGuaranteed> {
         make_codegen_backend: None,
         registry: rustc_driver::diagnostics_registry(),
         ice_file: None,
+        expanded_args: options.expanded_args.clone(),
     };
 
     let test_args = options.test_args.clone();