From fc734e56813ed2bb02fa2b80737d69a7789cf455 Mon Sep 17 00:00:00 2001
From: Rico Tzschichholz <ricotz@ubuntu.com>
Date: Wed, 24 Jan 2018 14:40:34 +0100
Subject: [PATCH] vala: Variadic constructors without a real first parameter
 are not allowed

---
 tests/Makefile.am                       | 1 +
 tests/objects/constructor-variadic.test | 9 +++++++++
 vala/valacreationmethod.vala            | 6 ++++++
 3 files changed, 16 insertions(+)
 create mode 100644 tests/objects/constructor-variadic.test

diff --git a/tests/Makefile.am b/tests/Makefile.am
index a27e874dc..bd49e6771 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -184,6 +184,7 @@ TESTS = \
 	delegates/bug792077.vala \
 	objects/chainup.vala \
 	objects/classes.vala \
+	objects/constructor-variadic.test \
 	objects/constructors.vala \
 	objects/dynamic.vala \
 	objects/generics.vala \
diff --git a/tests/objects/constructor-variadic.test b/tests/objects/constructor-variadic.test
new file mode 100644
index 000000000..ed9527d99
--- /dev/null
+++ b/tests/objects/constructor-variadic.test
@@ -0,0 +1,9 @@
+Invalid Code
+
+class Foo {
+	Foo (...) {
+	}
+}
+
+void main () {
+}
diff --git a/vala/valacreationmethod.vala b/vala/valacreationmethod.vala
index 451dd813d..4d905348f 100644
--- a/vala/valacreationmethod.vala
+++ b/vala/valacreationmethod.vala
@@ -99,8 +99,14 @@ public class Vala.CreationMethod : Method {
 		}
 		context.analyzer.current_symbol = this;
 
+		int i = 0;
 		foreach (Parameter param in get_parameters()) {
 			param.check (context);
+			if (i == 0 && param.ellipsis && body != null) {
+				error = true;
+				Report.error (param.source_reference, "Named parameter required before `...'");
+			}
+			i++;
 		}
 
 		foreach (DataType error_type in get_error_types ()) {
-- 
2.47.2