[glib] hash test: avoid leaking various keys and values

[Simon McVittie <smcv src gnome org>]

commit f6b2847e5787a7c17a6d85f57049c5699451c246
Author: Simon McVittie <simon mcvittie collabora co uk>
Date:   Tue Dec 13 14:46:02 2011 +0000

    hash test: avoid leaking various keys and values
    
    Signed-off-by: Simon McVittie <simon mcvittie collabora co uk>
    Bug: https://bugzilla.gnome.org/show_bug.cgi?id=666115
    Reviewed-by: Matthias Clasen <mclasen redhat com>

 glib/tests/hash.c |   82 ++++++++++++++++++++++++++++++++++++++++++++++++----
 1 files changed, 75 insertions(+), 7 deletions(-)
---
diff --git a/glib/tests/hash.c b/glib/tests/hash.c
index efc23ef..716bfa2 100644
--- a/glib/tests/hash.c
+++ b/glib/tests/hash.c
@@ -861,6 +861,33 @@ set_ref_hash_test (void)
 
 GHashTable *h;
 
+typedef struct {
+    gchar *string;
+    gboolean freed;
+} FakeFreeData;
+
+GPtrArray *fake_free_data;
+
+static void
+fake_free (gpointer dead)
+{
+  guint i;
+
+  for (i = 0; i < fake_free_data->len; i++)
+    {
+      FakeFreeData *ffd = g_ptr_array_index (fake_free_data, i);
+
+      if (ffd->string == (gchar *) dead)
+        {
+          g_assert (!ffd->freed);
+          ffd->freed = TRUE;
+          return;
+        }
+    }
+
+  g_assert_not_reached ();
+}
+
 static void
 value_destroy_insert (gpointer value)
 {
@@ -870,18 +897,59 @@ value_destroy_insert (gpointer value)
 static void
 test_destroy_modify (void)
 {
+  FakeFreeData *ffd;
+  guint i;
+
   g_test_bug ("650459");
 
-  h = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, value_destroy_insert);
+  fake_free_data = g_ptr_array_new ();
+
+  h = g_hash_table_new_full (g_str_hash, g_str_equal, fake_free, value_destroy_insert);
+
+  ffd = g_new0 (FakeFreeData, 1);
+  ffd->string = g_strdup ("a");
+  g_ptr_array_add (fake_free_data, ffd);
+  g_hash_table_insert (h, ffd->string, "b");
+
+  ffd = g_new0 (FakeFreeData, 1);
+  ffd->string = g_strdup ("c");
+  g_ptr_array_add (fake_free_data, ffd);
+  g_hash_table_insert (h, ffd->string, "d");
+
+  ffd = g_new0 (FakeFreeData, 1);
+  ffd->string = g_strdup ("e");
+  g_ptr_array_add (fake_free_data, ffd);
+  g_hash_table_insert (h, ffd->string, "f");
+
+  ffd = g_new0 (FakeFreeData, 1);
+  ffd->string = g_strdup ("g");
+  g_ptr_array_add (fake_free_data, ffd);
+  g_hash_table_insert (h, ffd->string, "h");
+
+  ffd = g_new0 (FakeFreeData, 1);
+  ffd->string = g_strdup ("h");
+  g_ptr_array_add (fake_free_data, ffd);
+  g_hash_table_insert (h, ffd->string, "k");
 
-  g_hash_table_insert (h, g_strdup ("a"), g_strdup ("b"));
-  g_hash_table_insert (h, g_strdup ("c"), g_strdup ("d"));
-  g_hash_table_insert (h, g_strdup ("e"), g_strdup ("f"));
-  g_hash_table_insert (h, g_strdup ("g"), g_strdup ("h"));
-  g_hash_table_insert (h, g_strdup ("h"), g_strdup ("k"));
-  g_hash_table_insert (h, g_strdup ("a"), g_strdup ("c"));
+  ffd = g_new0 (FakeFreeData, 1);
+  ffd->string = g_strdup ("a");
+  g_ptr_array_add (fake_free_data, ffd);
+  g_hash_table_insert (h, ffd->string, "c");
 
   g_hash_table_remove (h, "c");
+
+  /* that removed everything... */
+  for (i = 0; i < fake_free_data->len; i++)
+    {
+      FakeFreeData *ffd = g_ptr_array_index (fake_free_data, i);
+
+      g_assert (ffd->freed);
+      g_free (ffd);
+    }
+
+  g_ptr_array_unref (fake_free_data);
+
+  /* ... so this is a no-op */
   g_hash_table_remove (h, "e");
 
   g_hash_table_unref (h);