1 files changed, 19 insertions, 0 deletions
diff --git a/src/test/incremental/issue-85197-invalid-span/auxiliary/respan.rs b/src/test/incremental/issue-85197-invalid-span/auxiliary/respan.rs
new file mode 100644
index 000000000..5088eab62
--- /dev/null
+++ b/src/test/incremental/issue-85197-invalid-span/auxiliary/respan.rs
@@ -0,0 +1,19 @@
+// force-host
+// no-prefer-dynamic
+
+#![crate_type = "proc-macro"]
+
+extern crate proc_macro;
+use proc_macro::TokenStream;
+
+
+/// Copies the resolution information (the `SyntaxContext`) of the first
+/// token to all other tokens in the stream. Does not recurse into groups.
+#[proc_macro]
+pub fn respan(input: TokenStream) -> TokenStream {
+    let first_span = input.clone().into_iter().next().unwrap().span();
+    input.into_iter().map(|mut tree| {
+        tree.set_span(tree.span().resolved_at(first_span));
+        tree
+    }).collect()
+}