[COMMITTED 148/220] gccrs: Add test case to show issue is fixed

[arthur . cohen]

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

Fixes Rust-GCC#3524

gcc/testsuite/ChangeLog:

        * rust/compile/issue-3524.rs: New test.

Signed-off-by: Philip Herron <herron.phi...@googlemail.com>
---
 gcc/testsuite/rust/compile/issue-3524.rs | 9 +++++++++
 1 file changed, 9 insertions(+)
 create mode 100644 gcc/testsuite/rust/compile/issue-3524.rs

diff --git a/gcc/testsuite/rust/compile/issue-3524.rs 
b/gcc/testsuite/rust/compile/issue-3524.rs
new file mode 100644
index 00000000000..62c8c351274
--- /dev/null
+++ b/gcc/testsuite/rust/compile/issue-3524.rs
@@ -0,0 +1,9 @@
+struct A {}
+// { dg-warning "struct is never constructed" "" { target *-*-* } .-1 }
+
+impl A {
+    fn main() {}
+    // { dg-warning "associated function is never used: .main." "" { target 
*-*-* } .-1 }
+}
+
+fn main() {}
-- 
2.49.0