[gobject-introspection] Avoid _get_func() consuming reference from input info

[Pavel Holejsovsky <pholejs src gnome org>]

commit 5fda6c30954e46c95eaf46370a4266c81afea6a2
Author: Pavel Holejsovsky <pavel holejsovsky gmail com>
Date:   Sat Mar 31 19:12:48 2012 +0200

    Avoid _get_func() consuming reference from input info
    
    Fix of leak in 4c9424e18d71237f438a99bc5f2d45ae7de60b78 was a bit
    overaggressive, stealing also one reference from input 'info'
    argument.
    
    Also fixes another bug in that commit - local 'func' shadowing the
    return value, causing that function always returned NULL even when
    some result was actually found.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=673282

 girepository/giobjectinfo.c      |    3 +--
 tests/repository/gitypelibtest.c |   13 +++++++++++++
 2 files changed, 14 insertions(+), 2 deletions(-)
---
diff --git a/girepository/giobjectinfo.c b/girepository/giobjectinfo.c
index 3b8f64b..7ba2a93 100644
--- a/girepository/giobjectinfo.c
+++ b/girepository/giobjectinfo.c
@@ -819,7 +819,7 @@ _get_func(GIObjectInfo *info,
   GIObjectInfo *parent_info;
   gpointer func = NULL;
 
-  parent_info = info;
+  parent_info = g_base_info_ref (info);
   while (parent_info != NULL)
     {
       parents = g_slist_prepend (parents, parent_info);
@@ -828,7 +828,6 @@ _get_func(GIObjectInfo *info,
 
   for (l = parents; l; l = l->next)
     {
-      GIObjectInfoRefFunction func;
       parent_info = l->data;
       symbol = getter (parent_info);
       if (symbol == NULL)
diff --git a/tests/repository/gitypelibtest.c b/tests/repository/gitypelibtest.c
index 15722a6..c53eab2 100644
--- a/tests/repository/gitypelibtest.c
+++ b/tests/repository/gitypelibtest.c
@@ -156,6 +156,18 @@ test_is_pointer_for_struct_arg (GIRepository *repo)
     g_base_info_unref (variant_info);
 }
 
+static void
+test_fundamental_get_ref_function_pointer (GIRepository *repo)
+{
+    GIObjectInfo *info;
+
+    g_assert (g_irepository_require (repo, "Regress", NULL, 0, NULL));
+    info = g_irepository_find_by_name (repo, "Regress",
+                                       "TestFundamentalObject");
+    g_object_info_get_ref_function_pointer (info);
+    g_base_info_unref (info);
+}
+
 int
 main(int argc, char **argv)
 {
@@ -170,6 +182,7 @@ main(int argc, char **argv)
     test_enum_and_flags_static_methods (repo);
     test_size_of_gvalue (repo);
     test_is_pointer_for_struct_arg (repo);
+    test_fundamental_get_ref_function_pointer (repo);
 
     exit(0);
 }