generics-constraints: Make multiple constraints unsupported

diff --git a/vala/valatypeparameter.vala b/vala/valatypeparameter.vala
index 4754d35dda0177bd7ece906c5009d687bca18403..29db5df39453807268b1d4cb6131565d77c5cbba 100644 (file)
--- a/vala/valatypeparameter.vala
+++ b/vala/valatypeparameter.vala
@@ -160,6 +160,10 @@ public class Vala.TypeParameter : TypeSymbol {
                        }
                }
 
+               if (type_constraint_list != null && type_constraint_list.size > 1) {
+                       Report.error (source_reference, "currently it is only supported to constrain a type parameter with one type");
+                       error = true;
+               }
                return !error;
        }
 }