From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:02:58 +0200
Subject: Adding upstream version 1.64.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/test/ui/attributes/key-value-expansion.rs | 55 +++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 src/test/ui/attributes/key-value-expansion.rs

(limited to 'src/test/ui/attributes/key-value-expansion.rs')

diff --git a/src/test/ui/attributes/key-value-expansion.rs b/src/test/ui/attributes/key-value-expansion.rs
new file mode 100644
index 000000000..83d601e5e
--- /dev/null
+++ b/src/test/ui/attributes/key-value-expansion.rs
@@ -0,0 +1,55 @@
+// Regression tests for issue #55414, expansion happens in the value of a key-value attribute,
+// and the expanded expression is more complex than simply a macro call.
+
+// aux-build:key-value-expansion.rs
+
+#![feature(rustc_attrs)]
+
+extern crate key_value_expansion;
+
+// Minimized test case.
+
+macro_rules! bug {
+    ($expr:expr) => {
+        #[rustc_dummy = $expr] // Any key-value attribute, not necessarily `doc`
+        struct S;
+    };
+}
+
+// Any expressions containing macro call `X` that's more complex than `X` itself.
+// Parentheses will work.
+bug!((column!())); //~ ERROR unexpected expression: `(7u32)`
+
+// Original test case.
+
+macro_rules! bug {
+    () => {
+        bug!("bug" + stringify!(found)); //~ ERROR unexpected expression: `"bug" + "found"`
+    };
+    ($test:expr) => {
+        #[doc = $test]
+        struct Test {}
+    };
+}
+
+bug!();
+
+// Test case from #66804.
+
+macro_rules! doc_comment {
+    ($x:expr) => {
+        #[doc = $x]
+        extern {}
+    };
+}
+
+macro_rules! some_macro {
+    ($t1: ty) => {
+        doc_comment! {format!("{coor}", coor = stringify!($t1)).as_str()}
+        //~^ ERROR unexpected expression: `{
+    };
+}
+
+some_macro!(u8);
+
+fn main() {}
-- 
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