[COMMITTED 064/101] gccrs: Add a regression test for function body check

[arthur . cohen]

From: Pierre-Emmanuel Patry <pierre-emmanuel.pa...@embecosm.com>

Function body check emit an error message when a required function body
is missing.

gcc/testsuite/ChangeLog:

        * rust/compile/functions_without_body.rs: New test.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.pa...@embecosm.com>
---
 .../rust/compile/functions_without_body.rs    | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 gcc/testsuite/rust/compile/functions_without_body.rs

diff --git a/gcc/testsuite/rust/compile/functions_without_body.rs 
b/gcc/testsuite/rust/compile/functions_without_body.rs
new file mode 100644
index 00000000000..36ddea52161
--- /dev/null
+++ b/gcc/testsuite/rust/compile/functions_without_body.rs
@@ -0,0 +1,21 @@
+struct MyStruct;
+
+trait X {}
+
+fn test_a();
+// { dg-error "free function without a body" "" { target *-*-* } .-1 }
+
+impl MyStruct {
+    fn test_b<T>()
+    // { dg-error "associated function in .impl. without body" "" { target 
*-*-* } .-1 }
+    where
+        T: Copy;
+
+    fn test_c<T>();
+    // { dg-error "associated function in .impl. without body" "" { target 
*-*-* } .-1 }
+}
+
+impl X for MyStruct {
+    fn test_d();
+    // { dg-error "associated function in .impl. without body" "" { target 
*-*-* } .-1 }
+}
-- 
2.42.1