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, 26 insertions, 0 deletions

diff --git a/src/test/ui/proc-macro/issue-75734-pp-paren.rs b/src/test/ui/proc-macro/issue-75734-pp-paren.rs
new file mode 100644
index 000000000..faa93787d
--- /dev/null
+++ b/src/test/ui/proc-macro/issue-75734-pp-paren.rs
@@ -0,0 +1,26 @@
+// Regression test for issue #75734
+// Ensures that we don't lose tokens when pretty-printing would
+// normally insert extra parentheses.
+
+// check-pass
+// aux-build:test-macros.rs
+// compile-flags: -Z span-debug
+
+#![no_std] // Don't load unnecessary hygiene information from std
+extern crate std;
+
+#[macro_use]
+extern crate test_macros;
+
+macro_rules! mul_2 {
+    ($val:expr) => {
+        print_bang!($val * 2);
+    };
+}
+
+
+#[print_attr]
+fn main() {
+    &|_: u8| {};
+    mul_2!(1 + 1);
+}