vala: Issue warning when passing arrays to typeof(), except for "string[]"

Passing arrays resolve to G_TYPE_INVALID, and "string[]" to G_TYPE_STRV

See https://gitlab.gnome.org/GNOME/vala/issues/868

diff --git a/vala/valatypeofexpression.vala b/vala/valatypeofexpression.vala
index 5aa28e1fd7191295ebfdd3ef08976cda33191b2b..b633681005427fde00df928fc16fa5e3fb95b5c9 100644 (file)
--- a/vala/valatypeofexpression.vala
+++ b/vala/valatypeofexpression.vala
@@ -86,6 +86,10 @@ public class Vala.TypeofExpression : Expression {
                        Report.warning (_data_type.source_reference, "Type argument list without effect");
                }
 
+               if (_data_type is ArrayType && ((ArrayType) _data_type).element_type.type_symbol != context.analyzer.string_type.type_symbol) {
+                       Report.warning (_data_type.source_reference, "Arrays do not have a `GLib.Type', with the exception of `string[]'");
+               }
+
                return !error;
        }