[glib: 10/11] gobject/gsignalgroup: fix memory leaks on error
- From: Philip Withnall <pwithnall src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [glib: 10/11] gobject/gsignalgroup: fix memory leaks on error
- Date: Wed, 18 May 2022 14:01:44 +0000 (UTC)
commit bb890b57d210701d4cab70f625121f2d0741d12c
Author: Marc-André Lureau <marcandre lureau redhat com>
Date: Tue May 17 15:21:53 2022 +0200
gobject/gsignalgroup: fix memory leaks on error
Spotted by ASAN during the tests:
Direct leak of 72 byte(s) in 1 object(s) allocated from:
#0 0x7ff0b4562077 in calloc (/lib64/libasan.so.8+0xba077)
#1 0x7ff0b3e8b508 in g_malloc0 ../glib/gmem.c:155
#2 0x7ff0b375052f in g_closure_new_simple ../gobject/gclosure.c:220
#3 0x7ff0b375b422 in g_cclosure_new ../gobject/gclosure.c:976
#4 0x7ff0b37d159e in g_signal_group_connect_full ../gobject/gsignalgroup.c:790
#5 0x7ff0b37d159e in g_signal_group_connect ../gobject/gsignalgroup.c:886
#6 0x4045d8 in test_signal_group_invalid ../gobject/tests/signalgroup.c:331
#7 0x7ff0b3f369a5 in test_case_run ../glib/gtestutils.c:2930
#8 0x7ff0b3f369a5 in g_test_run_suite_internal ../glib/gtestutils.c:3018
#9 0x7ff0b3f364ed in g_test_run_suite_internal ../glib/gtestutils.c:3035
#10 0x7ff0b3f364ed in g_test_run_suite_internal ../glib/gtestutils.c:3035
#11 0x7ff0b3f37879 in g_test_run_suite ../glib/gtestutils.c:3112
#12 0x7ff0b3f37995 in g_test_run ../glib/gtestutils.c:2231
#13 0x40253c in main ../gobject/tests/signalgroup.c:664
#14 0x7ff0b2de758f in __libc_start_call_main (/lib64/libc.so.6+0x2d58f)
Direct leak of 72 byte(s) in 1 object(s) allocated from:
#0 0x7f012addf077 in calloc (/lib64/libasan.so.8+0xba077)
#1 0x7f012a708508 in g_malloc0 ../glib/gmem.c:155
#2 0x7f0129fcd52f in g_closure_new_simple ../gobject/gclosure.c:220
#3 0x7f0129fd8422 in g_cclosure_new ../gobject/gclosure.c:976
#4 0x7f012a04e5ae in g_signal_group_connect_full ../gobject/gsignalgroup.c:791
#5 0x7f012a04e5ae in g_signal_group_connect ../gobject/gsignalgroup.c:887
#6 0x4043cc in test_signal_group_invalid ../gobject/tests/signalgroup.c:308
#7 0x7f012a7b39a5 in test_case_run ../glib/gtestutils.c:2930
#8 0x7f012a7b39a5 in g_test_run_suite_internal ../glib/gtestutils.c:3018
#9 0x7f012a7b34ed in g_test_run_suite_internal ../glib/gtestutils.c:3035
#10 0x7f012a7b34ed in g_test_run_suite_internal ../glib/gtestutils.c:3035
#11 0x7f012a7b4879 in g_test_run_suite ../glib/gtestutils.c:3112
#12 0x7f012a7b4995 in g_test_run ../glib/gtestutils.c:2231
#13 0x40253c in main ../gobject/tests/signalgroup.c:664
#14 0x7f012966458f in __libc_start_call_main (/lib64/libc.so.6+0x2d58f)
Signed-off-by: Marc-André Lureau <marcandre lureau redhat com>
gobject/gsignalgroup.c | 69 +++++++++++++++++++++++++++++---------------------
1 file changed, 40 insertions(+), 29 deletions(-)
---
diff --git a/gobject/gsignalgroup.c b/gobject/gsignalgroup.c
index 01a0a12c8b..e773fc040d 100644
--- a/gobject/gsignalgroup.c
+++ b/gobject/gsignalgroup.c
@@ -705,36 +705,22 @@ g_signal_group_new (GType target_type)
NULL);
}
-/**
- * g_signal_group_connect_closure:
- * @self: a #GSignalGroup
- * @detailed_signal: a string of the form `signal-name` with optional `::signal-detail`
- * @closure: (not nullable): the closure to connect.
- * @after: whether the handler should be called before or after the
- * default handler of the signal.
- *
- * Connects @closure to the signal @detailed_signal on #GSignalGroup:target.
- *
- * You cannot connect a signal handler after #GSignalGroup:target has been set.
- *
- * Since: 2.74
- */
-void
-g_signal_group_connect_closure (GSignalGroup *self,
- const gchar *detailed_signal,
- GClosure *closure,
- gboolean after)
+static gboolean
+g_signal_group_connect_closure_ (GSignalGroup *self,
+ const gchar *detailed_signal,
+ GClosure *closure,
+ gboolean after)
{
GObject *target;
SignalHandler *handler;
guint signal_id;
GQuark signal_detail;
- g_return_if_fail (G_IS_SIGNAL_GROUP (self));
- g_return_if_fail (detailed_signal != NULL);
- g_return_if_fail (g_signal_parse_name (detailed_signal, self->target_type,
- &signal_id, &signal_detail, TRUE) != 0);
- g_return_if_fail (closure != NULL);
+ g_return_val_if_fail (G_IS_SIGNAL_GROUP (self), FALSE);
+ g_return_val_if_fail (detailed_signal != NULL, FALSE);
+ g_return_val_if_fail (g_signal_parse_name (detailed_signal, self->target_type,
+ &signal_id, &signal_detail, TRUE) != 0, FALSE);
+ g_return_val_if_fail (closure != NULL, FALSE);
g_rec_mutex_lock (&self->mutex);
@@ -742,7 +728,7 @@ g_signal_group_connect_closure (GSignalGroup *self,
{
g_critical ("Cannot add signals after setting target");
g_rec_mutex_unlock (&self->mutex);
- return;
+ return FALSE;
}
handler = g_slice_new0 (SignalHandler);
@@ -768,6 +754,30 @@ g_signal_group_connect_closure (GSignalGroup *self,
g_signal_group_gc_handlers (self);
g_rec_mutex_unlock (&self->mutex);
+ return TRUE;
+}
+
+/**
+ * g_signal_group_connect_closure:
+ * @self: a #GSignalGroup
+ * @detailed_signal: a string of the form `signal-name` with optional `::signal-detail`
+ * @closure: (not nullable): the closure to connect.
+ * @after: whether the handler should be called before or after the
+ * default handler of the signal.
+ *
+ * Connects @closure to the signal @detailed_signal on #GSignalGroup:target.
+ *
+ * You cannot connect a signal handler after #GSignalGroup:target has been set.
+ *
+ * Since: 2.74
+ */
+void
+g_signal_group_connect_closure (GSignalGroup *self,
+ const gchar *detailed_signal,
+ GClosure *closure,
+ gboolean after)
+{
+ g_signal_group_connect_closure_ (self, detailed_signal, closure, after);
}
static void
@@ -798,10 +808,11 @@ g_signal_group_connect_full (GSignalGroup *self,
g_object_watch_closure (data, closure);
}
- g_signal_group_connect_closure (self,
- detailed_signal,
- closure,
- (flags & G_CONNECT_AFTER) != 0);
+ if (!g_signal_group_connect_closure_ (self,
+ detailed_signal,
+ closure,
+ (flags & G_CONNECT_AFTER) != 0))
+ g_closure_unref (closure);
}
/**
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