gccrs: Add a new regression test for issue 2665

Highlight issue 2665's fix for const with no value expression.

gcc/testsuite/ChangeLog:

	* rust/compile/issue-2665.rs: New test.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

diff --git a/gcc/testsuite/rust/compile/issue-2665.rs b/gcc/testsuite/rust/compile/issue-2665.rs
new file mode 100644 (file)
index 0000000..3ee8e7b
--- /dev/null
+++ b/gcc/testsuite/rust/compile/issue-2665.rs
@@ -0,0 +1,6 @@
+fn main() {}
+
+#[cfg(FALSE)]
+impl X {
+    const Y: u8;
+}