From fd5b1583fe3c7e2a866b18a42e9dcde0c647802d Mon Sep 17 00:00:00 2001
From: León Orell Valerian Liehr <me@fmease.dev>
Date: Fri, 2 May 2025 23:03:30 +0200
Subject: Don't delay a bug on malformed meta items involving interpolated
 tokens
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Co-authored-by: Jana Dönszelmann <jana@donsz.nl>
---
 .../ui/attributes/auxiliary/derive_macro_with_helper.rs  |  8 ++++++++
 tests/ui/attributes/proc_macro_in_macro.rs               | 16 ++++++++++++++++
 2 files changed, 24 insertions(+)
 create mode 100644 tests/ui/attributes/auxiliary/derive_macro_with_helper.rs
 create mode 100644 tests/ui/attributes/proc_macro_in_macro.rs

(limited to 'tests/ui/attributes')

diff --git a/tests/ui/attributes/auxiliary/derive_macro_with_helper.rs b/tests/ui/attributes/auxiliary/derive_macro_with_helper.rs
new file mode 100644
index 00000000000..128af50ce36
--- /dev/null
+++ b/tests/ui/attributes/auxiliary/derive_macro_with_helper.rs
@@ -0,0 +1,8 @@
+extern crate proc_macro;
+
+use proc_macro::TokenStream;
+
+#[proc_macro_derive(Derive, attributes(arg))]
+pub fn derive(_: TokenStream) -> TokenStream {
+    TokenStream::new()
+}
diff --git a/tests/ui/attributes/proc_macro_in_macro.rs b/tests/ui/attributes/proc_macro_in_macro.rs
new file mode 100644
index 00000000000..ebe67d2a321
--- /dev/null
+++ b/tests/ui/attributes/proc_macro_in_macro.rs
@@ -0,0 +1,16 @@
+// Regression test for <https://github.com/rust-lang/rust/issues/137687#issuecomment-2816312274>.
+//@ proc-macro: derive_macro_with_helper.rs
+//@ edition: 2018
+//@ check-pass
+
+macro_rules! call_macro {
+    ($text:expr) => {
+        #[derive(derive_macro_with_helper::Derive)]
+        #[arg($text)]
+        pub struct Foo;
+    };
+}
+
+call_macro!(1 + 1);
+
+fn main() {}
-- 
cgit 1.4.1-3-g733a5