From d72008b2c26dcbec619b2515645a95c376e92e5c Mon Sep 17 00:00:00 2001
From: Rico Tzschichholz <ricotz@ubuntu.com>
Date: Thu, 25 Nov 2021 20:22:00 +0100
Subject: [PATCH] vala: Report error on missing gio-2.0 package for async
 constructors

Fixes https://gitlab.gnome.org/GNOME/vala/issues/1256
---
 vala/valacreationmethod.vala | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/vala/valacreationmethod.vala b/vala/valacreationmethod.vala
index 77b311f31..e59526dd9 100644
--- a/vala/valacreationmethod.vala
+++ b/vala/valacreationmethod.vala
@@ -97,6 +97,12 @@ public class Vala.CreationMethod : Method {
 			this_parameter.check (context);
 		}
 
+		if (coroutine && !external_package && !context.has_package ("gio-2.0")) {
+			error = true;
+			Report.error (source_reference, "gio-2.0 package required for async constructors");
+			return false;
+		}
+
 		var old_source_file = context.analyzer.current_source_file;
 		var old_symbol = context.analyzer.current_symbol;
 
-- 
2.47.2