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, 31 insertions, 0 deletions

diff --git a/src/test/ui/proc-macro/macro-rules-derive-cfg.rs b/src/test/ui/proc-macro/macro-rules-derive-cfg.rs
new file mode 100644
index 000000000..a221b9578
--- /dev/null
+++ b/src/test/ui/proc-macro/macro-rules-derive-cfg.rs
@@ -0,0 +1,31 @@
+// check-pass
+// compile-flags: -Z span-debug --error-format human
+// aux-build:test-macros.rs
+
+#![feature(rustc_attrs)]
+#![feature(stmt_expr_attributes)]
+
+#![no_std] // Don't load unnecessary hygiene information from std
+extern crate std;
+
+#[macro_use]
+extern crate test_macros;
+
+macro_rules! produce_it {
+    ($expr:expr) => {
+        #[derive(Print)]
+        struct Foo {
+            val: [bool; {
+                let a = #[cfg_attr(not(FALSE), rustc_dummy(first))] $expr;
+                0
+            }]
+        }
+    }
+}
+
+produce_it!(#[cfg_attr(not(FALSE), rustc_dummy(second))] {
+    #![cfg_attr(not(FALSE), allow(unused))]
+    30
+});
+
+fn main() {}