[vala/wip/transform: 790/793] GBus: Handle fd_list being null

[Rico Tzschichholz <ricotz src gnome org>]

commit e522235ddce0903e7ca2c5dc4b0b682c9924799b
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Sun Mar 19 23:14:10 2017 +0100

    GBus: Handle fd_list being null

 codegen/valagdbusclienttransformer.vala |    1 +
 codegen/valagdbusservertransformer.vala |    4 ++++
 2 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/codegen/valagdbusclienttransformer.vala b/codegen/valagdbusclienttransformer.vala
index da2d66a..fcaae31 100644
--- a/codegen/valagdbusclienttransformer.vala
+++ b/codegen/valagdbusclienttransformer.vala
@@ -52,6 +52,7 @@ public class Vala.GDBusClientTransformer : GVariantTransformer {
                                fd_index = b.add_temp_declaration (null, expression ("0"));
                                statements (@"$fd_list = $message.get_unix_fd_list ();");
                        }
+                       statements (@"if ($fd_list == null) { throw new GLib.IOError.FAILED (\"FD List is 
NULL\"); }");
                        statements (@"$iter.next (\"h\", out $fd_index);");
                        if (type_name == "GLib.UnixInputStream") {
                                return expression (@"new GLib.UnixInputStream ($fd_list.get ($fd_index), 
true)");
diff --git a/codegen/valagdbusservertransformer.vala b/codegen/valagdbusservertransformer.vala
index 0e745eb..185af0e 100644
--- a/codegen/valagdbusservertransformer.vala
+++ b/codegen/valagdbusservertransformer.vala
@@ -85,7 +85,11 @@ public class Vala.GDBusServerTransformer : GDBusClientTransformer {
 
                        if (param.direction == ParameterDirection.IN) {
                                var arg = b.add_temp_declaration (copy_type (param.variable_type, true));
+                               b.open_try ();
                                b.add_assignment (expression (arg), read_dbus_value (param.variable_type, 
iter, "invocation.get_message ()", ref fd_list, ref fd_index));
+                               b.add_catch_all ("_invocation_gerror_");
+                               statements ("invocation.return_gerror (_invocation_gerror_); return;");
+                               b.close ();
                                call.add_argument (expression (arg));
                        } else if (param.direction == ParameterDirection.OUT) {
                                if (m.coroutine) {