1 files changed, 12 insertions, 0 deletions
diff --git a/tests/rustdoc-ui/proc_macro_bug.rs b/tests/rustdoc-ui/proc_macro_bug.rs
new file mode 100644
index 000000000..e384e4863
--- /dev/null
+++ b/tests/rustdoc-ui/proc_macro_bug.rs
@@ -0,0 +1,12 @@
+// regression test for failing to pass `--crate-type proc-macro` to rustdoc
+// when documenting a proc macro crate https://github.com/rust-lang/rust/pull/107291
+
+extern crate proc_macro;
+
+use proc_macro::TokenStream;
+
+#[proc_macro_derive(DeriveA)]
+//~^ ERROR the `#[proc_macro_derive]` attribute is only usable with crates of the `proc-macro` crate type
+pub fn a_derive(input: TokenStream) -> TokenStream {
+    input
+}