[vala/0.34] vala: Enums require at least one value otherwise report an error

[Rico Tzschichholz <ricotz src gnome org>]

commit 6b7941fab8db6cf5e02484c16dc1592257bf940d
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Mon Apr 24 08:44:09 2017 +0200

    vala: Enums require at least one value otherwise report an error

 vala/valaenum.vala      |    6 ++++++
 vala/valagirparser.vala |    6 ++++++
 2 files changed, 12 insertions(+), 0 deletions(-)
---
diff --git a/vala/valaenum.vala b/vala/valaenum.vala
index acb8eb3..add5107 100644
--- a/vala/valaenum.vala
+++ b/vala/valaenum.vala
@@ -171,6 +171,12 @@ public class Vala.Enum : TypeSymbol {
                }
                context.analyzer.current_symbol = this;
 
+               if (values.size <= 0) {
+                       Report.error (source_reference, "Enum `%s' requires at least one value".printf 
(get_full_name ()));
+                       error = true;
+                       return false;
+               }
+
                foreach (EnumValue value in values) {
                        value.check (context);
                }
diff --git a/vala/valagirparser.vala b/vala/valagirparser.vala
index ac823db..bc7a094 100644
--- a/vala/valagirparser.vala
+++ b/vala/valagirparser.vala
@@ -2293,6 +2293,7 @@ public class Vala.GirParser : CodeVisitor {
                sym.access = SymbolAccessibility.PUBLIC;
 
                string common_prefix = null;
+               bool has_member = false;
 
                next ();
 
@@ -2305,6 +2306,7 @@ public class Vala.GirParser : CodeVisitor {
                        }
 
                        if (reader.name == "member") {
+                               has_member = true;
                                if (error_domain) {
                                        parse_error_member ();
                                        calculate_common_prefix (ref common_prefix, old_current.get_cname ());
@@ -2323,6 +2325,10 @@ public class Vala.GirParser : CodeVisitor {
                        pop_metadata ();
                }
 
+               if (!has_member) {
+                       Report.error (get_current_src (), "%s `%s' has no members".printf (element_name, 
current.name));
+               }
+
                if (common_prefix != null) {
                        sym.set_attribute_string ("CCode", "cprefix", common_prefix);
                }