1 files changed, 23 insertions, 0 deletions
diff --git a/tests/ui/proc-macro/weird-braces.rs b/tests/ui/proc-macro/weird-braces.rs
new file mode 100644
index 000000000..b9a7e08f9
--- /dev/null
+++ b/tests/ui/proc-macro/weird-braces.rs
@@ -0,0 +1,23 @@
+// aux-build:test-macros.rs
+// check-pass
+// compile-flags: -Z span-debug
+
+#![feature(custom_inner_attributes)]
+
+#![no_std] // Don't load unnecessary hygiene information from std
+extern crate std;
+
+extern crate test_macros;
+use test_macros::{print_target_and_args};
+
+struct Foo<const V: bool>;
+trait Bar<const V: bool> {}
+
+#[print_target_and_args(first_outer)]
+#[print_target_and_args(second_outer)]
+impl Bar<{1 > 0}> for Foo<{true}> {
+    #![print_target_and_args(first_inner)]
+    #![print_target_and_args(second_inner)]
+}
+
+fn main() {}