Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 37 insertions, 0 deletions

diff --git a/src/test/ui/proc-macro/nonterminal-expansion.rs b/src/test/ui/proc-macro/nonterminal-expansion.rs
new file mode 100644
index 000000000..e62155871
--- /dev/null
+++ b/src/test/ui/proc-macro/nonterminal-expansion.rs
@@ -0,0 +1,37 @@
+// check-pass
+// compile-flags: -Z span-debug
+// aux-build:test-macros.rs
+
+#![no_std] // Don't load unnecessary hygiene information from std
+extern crate std;
+
+#[macro_use]
+extern crate test_macros;
+
+macro_rules! pass_nonterminal {
+    ($line:expr) => {
+        #[print_attr_args(a, $line, b)]
+        struct S;
+    };
+}
+
+// `line!()` is not expanded before it's passed to the proc macro.
+pass_nonterminal!(line!());
+
+// Test case from #43860.
+
+#[macro_export]
+macro_rules! use_contract {
+    ($name: ident, $path: expr) => {
+        #[derive(Empty)]
+        #[empty_helper(path = $path)] // OK
+        pub struct $name<T, C> {
+            api: T,
+            contract: C,
+        }
+    };
+}
+
+use_contract!(ContractName, file!());
+
+fn main() {}