Make output type in ast::FnDecl optional

[rust.git] / src / librustc_trans / trans / debuginfo.rs

diff --git a/src/librustc_trans/trans/debuginfo.rs b/src/librustc_trans/trans/debuginfo.rs
index a03a5090c050bc9f73b33618f523a8311c7c596e..ea66b97bbf968e30d5186f7026f68720f9acfc82 100644 (file)
--- a/src/librustc_trans/trans/debuginfo.rs
+++ b/src/librustc_trans/trans/debuginfo.rs
@@ -1450,18 +1450,15 @@ fn get_function_signature<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
         let mut signature = Vec::with_capacity(fn_decl.inputs.len() + 1);
 
         // Return type -- llvm::DIBuilder wants this at index 0
-        match fn_decl.output {
-            ast::Return(ref ret_ty) if ret_ty.node == ast::TyTup(vec![]) =>
-                signature.push(ptr::null_mut()),
-            _ => {
-                assert_type_for_node_id(cx, fn_ast_id, error_reporting_span);
-
-                let return_type = ty::node_id_to_type(cx.tcx(), fn_ast_id);
-                let return_type = monomorphize::apply_param_substs(cx.tcx(),
-                                                                   param_substs,
-                                                                   &return_type);
-                signature.push(type_metadata(cx, return_type, codemap::DUMMY_SP));
-            }
+        assert_type_for_node_id(cx, fn_ast_id, error_reporting_span);
+        let return_type = ty::node_id_to_type(cx.tcx(), fn_ast_id);
+        let return_type = monomorphize::apply_param_substs(cx.tcx(),
+                                                           param_substs,
+                                                           &return_type);
+        if ty::type_is_nil(return_type) {
+            signature.push(ptr::null_mut())
+        } else {
+            signature.push(type_metadata(cx, return_type, codemap::DUMMY_SP));
         }
 
         // Arguments types