[COMMITTED 140/220] gccrs: add test case to show issue is fixed

[arthur . cohen]

From: Philip Herron <herron.phi...@googlemail.com>

Fixes Rust-GCC#3599

gcc/testsuite/ChangeLog:

        * rust/compile/issue-3599.rs: New test.

Signed-off-by: Philip Herron <herron.phi...@googlemail.com>
---
 gcc/testsuite/rust/compile/issue-3599.rs | 8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100644 gcc/testsuite/rust/compile/issue-3599.rs

diff --git a/gcc/testsuite/rust/compile/issue-3599.rs 
b/gcc/testsuite/rust/compile/issue-3599.rs
new file mode 100644
index 00000000000..1d29fac84e9
--- /dev/null
+++ b/gcc/testsuite/rust/compile/issue-3599.rs
@@ -0,0 +1,8 @@
+#[lang = "sized"]
+trait Sized {}
+
+trait Bar {}
+
+struct S; // { dg-warning "struct is never constructed" }
+
+pub fn test(foo: impl Bar) {}
-- 
2.49.0