From bd5206ee1846f90579e644ebc7874a7300fc6171 Mon Sep 17 00:00:00 2001
From: Josh Triplett <josh@joshtriplett.org>
Date: Fri, 8 Aug 2025 10:31:37 -0700
Subject: [PATCH] mbe: Add test for attribute expansion with `compile_error!`

---
 tests/ui/macros/macro-rules-attr-error.rs     | 13 +++++++++++++
 tests/ui/macros/macro-rules-attr-error.stderr | 13 +++++++++++++
 2 files changed, 26 insertions(+)
 create mode 100644 tests/ui/macros/macro-rules-attr-error.rs
 create mode 100644 tests/ui/macros/macro-rules-attr-error.stderr

diff --git a/tests/ui/macros/macro-rules-attr-error.rs b/tests/ui/macros/macro-rules-attr-error.rs
new file mode 100644
index 000000000000..59fb32a5bfca
--- /dev/null
+++ b/tests/ui/macros/macro-rules-attr-error.rs
@@ -0,0 +1,13 @@
+#![feature(macro_attr)]
+
+macro_rules! local_attr {
+    attr() { $($body:tt)* } => {
+        compile_error!(concat!("local_attr: ", stringify!($($body)*)));
+    };
+    //~^^ ERROR: local_attr
+}
+
+fn main() {
+    #[local_attr]
+    struct S;
+}
diff --git a/tests/ui/macros/macro-rules-attr-error.stderr b/tests/ui/macros/macro-rules-attr-error.stderr
new file mode 100644
index 000000000000..7d033ae3f03d
--- /dev/null
+++ b/tests/ui/macros/macro-rules-attr-error.stderr
@@ -0,0 +1,13 @@
+error: local_attr: struct S;
+  --> $DIR/macro-rules-attr-error.rs:5:9
+   |
+LL |         compile_error!(concat!("local_attr: ", stringify!($($body)*)));
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+...
+LL |     #[local_attr]
+   |     ------------- in this attribute macro expansion
+   |
+   = note: this error originates in the attribute macro `local_attr` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: aborting due to 1 previous error
+