[gobject-introspection] baseinfo: don't abort when calling g_base_info_get_name() on a GITypeInfo. Fixes #96

[Christoph Reiter <creiter src gnome org>]

commit 0cc1dcc0afd0424e79235ed3053bdbfb83f7adb0
Author: Christoph Reiter <reiter christoph gmail com>
Date:   Sat Dec 15 00:18:23 2018 +0100

    baseinfo: don't abort when calling g_base_info_get_name() on a GITypeInfo. Fixes #96
    
    GITypeInfo is a GIBaseInfo so calling g_base_info_get_name() on it should do something
    sensible.
    
    g_base_info_get_name() has always been documented to return NULL in case no name
    is available so return that instead.

 girepository/gibaseinfo.c     |  1 +
 tests/repository/gitestrepo.c | 25 +++++++++++++++++++++++++
 2 files changed, 26 insertions(+)
---
diff --git a/girepository/gibaseinfo.c b/girepository/gibaseinfo.c
index ced7674e..e47d5390 100644
--- a/girepository/gibaseinfo.c
+++ b/girepository/gibaseinfo.c
@@ -377,6 +377,7 @@ g_base_info_get_name (GIBaseInfo *info)
       }
       break;
     case GI_INFO_TYPE_TYPE:
+      return NULL;
     default: ;
       g_assert_not_reached ();
       /* unnamed */
diff --git a/tests/repository/gitestrepo.c b/tests/repository/gitestrepo.c
index 281a5f3b..6c10b076 100644
--- a/tests/repository/gitestrepo.c
+++ b/tests/repository/gitestrepo.c
@@ -34,6 +34,29 @@ test_constructor_return_type(GIBaseInfo* object_info)
   g_assert (strcmp (class_name, return_name) == 0);
 }
 
+static void
+test_type_info_get_name (GIRepository *repo)
+{
+  GIBaseInfo *base;
+  GIVFuncInfo *vfunc;
+  GITypeInfo *typeinfo;
+
+  base = g_irepository_find_by_name (repo, "Gio", "File");
+  g_assert_nonnull (base);
+  g_assert_true (GI_IS_INTERFACE_INFO (base));
+  vfunc = g_interface_info_find_vfunc ((GIInterfaceInfo*)base, "read_async");
+  g_assert_nonnull (vfunc);
+  g_base_info_unref ((GIBaseInfo*)base);
+
+  typeinfo = g_callable_info_get_return_type (vfunc);
+  g_assert_nonnull (typeinfo);
+  g_base_info_unref ((GIBaseInfo*)vfunc);
+
+  /* https://gitlab.gnome.org/GNOME/gobject-introspection/issues/96 */
+  g_assert_null (g_base_info_get_name (typeinfo));
+  g_base_info_unref ((GIBaseInfo*)typeinfo);
+}
+
 
 int
 main(int argc, char **argv)
@@ -137,6 +160,8 @@ main(int argc, char **argv)
     g_assert (strcmp (g_base_info_get_name ((GIBaseInfo*)invoker), "get_display") == 0);
   }
 
+  test_type_info_get_name (repo);
+
   /* Error quark tests */
   errorinfo = g_irepository_find_by_error_domain (repo, G_RESOLVER_ERROR);
   g_assert (errorinfo != NULL);