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Fix refcounting issues in IBusText & IBusProperty

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This commit is contained in:
Takao Fujiwara 2022-03-31 19:50:09 +09:00
parent c9cc2c8286
commit dfb5d9acdb
2 changed files with 274 additions and 1 deletions
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270
ibus-HEAD.patch
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@ -1,3 +1,273 @@
From 17648f0522910480b6c5dd4f5356ca1f6c160bf5 Mon Sep 17 00:00:00 2001
From: Carlos Garnacho <carlosg@gnome.org>
Date: Tue, 29 Mar 2022 22:48:19 +0200
Subject: [PATCH] src: Fix refcounting issues
Commit 5a455b1ead attempted to fix both GLib warnings around
floating references and other presumed refcounting issues. However
it missed 2 kinds of bugs:
- The places that take an IBusText created from a static string
were made to avoid freeing it afterwards, but the staticness refers
to the string content, not the object itself.
- The places that are documented to emit signals on floating object
references used to do the following after signal emission:
if (g_object_is_floating (object))
g_object_unref (object)
And did possibly trigger GLib warnings were changed to:
if (g_object_is_floating (object))
g_object_sink_ref (object);
g_object_unref (object);
Which fixes the GLib warning for floating references, but do
unintendedly steal one reference away for non floating references.
This commit is essentially a revert of commit 5a455b1ead, but
addressing both things differently:
- All label/tooltip/symbol IBusText properties in IBusProperty do
now always sink the reference of the stored object.
- All places documented as maybe using objects with a floating reference
on signals changed to doing:
if (g_object_is_floating (object)) {
g_object_ref_sink (object);
g_object_unref (object);
}
So the floating reference is owned and unreferenced without warnings,
but already owned references are left unchanged.
This addresses the possible GLib warnings, fixes the possible double
unrefs happening on IBusText used in signals, and fixes the missing
unrefs on IBusText objects created from static strings.
BUG=https://github.com/ibus/ibus/issues/2393
BUG=https://github.com/ibus/ibus/issues/2387
---
src/ibusinputcontext.c | 35 +++++++++++++++++++++--------------
src/ibusproperty.c | 32 +++++++++++++++++---------------
2 files changed, 38 insertions(+), 29 deletions(-)
diff --git a/src/ibusinputcontext.c b/src/ibusinputcontext.c
index 4b27551b..7981de38 100644
--- a/src/ibusinputcontext.c
+++ b/src/ibusinputcontext.c
@@ -549,9 +549,10 @@ ibus_input_context_g_signal (GDBusProxy *proxy,
g_variant_unref (variant);
g_signal_emit (context, context_signals[COMMIT_TEXT], 0, text);
- if (g_object_is_floating (text))
+ if (g_object_is_floating (text)) {
g_object_ref_sink (text);
- g_object_unref (text);
+ g_object_unref (text);
+ }
return;
}
if (g_strcmp0 (signal_name, "UpdatePreeditText") == 0) {
@@ -569,9 +570,10 @@ ibus_input_context_g_signal (GDBusProxy *proxy,
cursor_pos,
visible);
- if (g_object_is_floating (text))
+ if (g_object_is_floating (text)) {
g_object_ref_sink (text);
- g_object_unref (text);
+ g_object_unref (text);
+ }
return;
}
if (g_strcmp0 (signal_name, "UpdatePreeditTextWithMode") == 0) {
@@ -592,9 +594,10 @@ ibus_input_context_g_signal (GDBusProxy *proxy,
visible,
mode);
- if (g_object_is_floating (text))
+ if (g_object_is_floating (text)) {
g_object_ref_sink (text);
- g_object_unref (text);
+ g_object_unref (text);
+ }
return;
}
@@ -621,9 +624,10 @@ ibus_input_context_g_signal (GDBusProxy *proxy,
0,
text,
visible);
- if (g_object_is_floating (text))
+ if (g_object_is_floating (text)) {
g_object_ref_sink (text);
- g_object_unref (text);
+ g_object_unref (text);
+ }
return;
}
@@ -640,9 +644,10 @@ ibus_input_context_g_signal (GDBusProxy *proxy,
0,
table,
visible);
- if (g_object_is_floating (table))
+ if (g_object_is_floating (table)) {
g_object_ref_sink (table);
- g_object_unref (table);
+ g_object_unref (table);
+ }
return;
}
@@ -659,9 +664,10 @@ ibus_input_context_g_signal (GDBusProxy *proxy,
0,
prop_list);
- if (g_object_is_floating (prop_list))
+ if (g_object_is_floating (prop_list)) {
g_object_ref_sink (prop_list);
- g_object_unref (prop_list);
+ g_object_unref (prop_list);
+ }
return;
}
@@ -673,9 +679,10 @@ ibus_input_context_g_signal (GDBusProxy *proxy,
g_signal_emit (context, context_signals[UPDATE_PROPERTY], 0, prop);
- if (g_object_is_floating (prop))
+ if (g_object_is_floating (prop)) {
g_object_ref_sink (prop);
- g_object_unref (prop);
+ g_object_unref (prop);
+ }
return;
}
diff --git a/src/ibusproperty.c b/src/ibusproperty.c
index 6d4ed088..cd8a0e2a 100644
--- a/src/ibusproperty.c
+++ b/src/ibusproperty.c
@@ -336,20 +336,17 @@ ibus_property_destroy (IBusProperty *prop)
prop->priv->icon = NULL;
if (prop->priv->label) {
- if (!ibus_text_get_is_static (prop->priv->label))
- g_object_unref (prop->priv->label);
+ g_object_unref (prop->priv->label);
prop->priv->label = NULL;
}
if (prop->priv->symbol) {
- if (!ibus_text_get_is_static (prop->priv->symbol))
- g_object_unref (prop->priv->symbol);
+ g_object_unref (prop->priv->symbol);
prop->priv->symbol = NULL;
}
if (prop->priv->tooltip) {
- if (!ibus_text_get_is_static (prop->priv->tooltip))
- g_object_unref (prop->priv->tooltip);
+ g_object_unref (prop->priv->tooltip);
prop->priv->tooltip = NULL;
}
@@ -404,7 +401,7 @@ ibus_property_deserialize (IBusProperty *prop,
g_variant_get_child (variant, retval++, "u", &prop->priv->type);
GVariant *subvar = g_variant_get_child_value (variant, retval++);
- if (prop->priv->label && !ibus_text_get_is_static (prop->priv->label)) {
+ if (prop->priv->label) {
g_object_unref (prop->priv->label);
}
prop->priv->label = IBUS_TEXT (ibus_serializable_deserialize (subvar));
@@ -414,7 +411,7 @@ ibus_property_deserialize (IBusProperty *prop,
ibus_g_variant_get_child_string (variant, retval++, &prop->priv->icon);
subvar = g_variant_get_child_value (variant, retval++);
- if (prop->priv->tooltip && !ibus_text_get_is_static (prop->priv->tooltip)) {
+ if (prop->priv->tooltip) {
g_object_unref (prop->priv->tooltip);
}
prop->priv->tooltip = IBUS_TEXT (ibus_serializable_deserialize (subvar));
@@ -435,7 +432,7 @@ ibus_property_deserialize (IBusProperty *prop,
/* Keep the serialized order for the compatibility when add new members. */
subvar = g_variant_get_child_value (variant, retval++);
- if (prop->priv->symbol && !ibus_text_get_is_static (prop->priv->symbol)) {
+ if (prop->priv->symbol) {
g_object_unref (prop->priv->symbol);
}
prop->priv->symbol = IBUS_TEXT (ibus_serializable_deserialize (subvar));
@@ -567,7 +564,7 @@ ibus_property_set_label (IBusProperty *prop,
g_assert (IBUS_IS_PROPERTY (prop));
g_return_if_fail (label == NULL || IBUS_IS_TEXT (label));
- if (prop->priv->label && !ibus_text_get_is_static (prop->priv->label)) {
+ if (prop->priv->label) {
g_object_unref (prop->priv->label);
}
@@ -575,8 +572,10 @@ ibus_property_set_label (IBusProperty *prop,
prop->priv->label = ibus_text_new_from_static_string ("");
}
else {
- prop->priv->label = g_object_ref_sink (label);
+ prop->priv->label = label;
}
+
+ g_object_ref_sink (prop->priv->label);
}
void
@@ -586,7 +585,7 @@ ibus_property_set_symbol (IBusProperty *prop,
g_assert (IBUS_IS_PROPERTY (prop));
g_return_if_fail (symbol == NULL || IBUS_IS_TEXT (symbol));
- if (prop->priv->symbol && !ibus_text_get_is_static (prop->priv->symbol)) {
+ if (prop->priv->symbol) {
g_object_unref (prop->priv->symbol);
}
@@ -594,8 +593,10 @@ ibus_property_set_symbol (IBusProperty *prop,
prop->priv->symbol = ibus_text_new_from_static_string ("");
}
else {
- prop->priv->symbol = g_object_ref_sink (symbol);
+ prop->priv->symbol = symbol;
}
+
+ g_object_ref_sink (prop->priv->symbol);
}
void
@@ -615,7 +616,7 @@ ibus_property_set_tooltip (IBusProperty *prop,
g_assert (IBUS_IS_PROPERTY (prop));
g_assert (tooltip == NULL || IBUS_IS_TEXT (tooltip));
- if (prop->priv->tooltip && !ibus_text_get_is_static (prop->priv->tooltip)) {
+ if (prop->priv->tooltip) {
g_object_unref (prop->priv->tooltip);
}
@@ -624,8 +625,9 @@ ibus_property_set_tooltip (IBusProperty *prop,
}
else {
prop->priv->tooltip = tooltip;
- g_object_ref_sink (prop->priv->tooltip);
}
+
+ g_object_ref_sink (prop->priv->tooltip);
}
void
--
2.34.1
From 1b5b9548ad418765717ce1fbdc70b3f3eaae67fc Mon Sep 17 00:00:00 2001
From: fujiwarat <takao.fujiwara1@gmail.com>
Date: Mon, 14 Mar 2022 14:25:10 +0900

5
ibus.spec
View File

@ -39,7 +39,7 @@
Name: ibus
Version: 1.5.26
Release: 2%{?dist}
Release: 3%{?dist}
Summary: Intelligent Input Bus for Linux OS
License: LGPLv2+
URL: https://github.com/ibus/%name/wiki
@ -521,6 +521,9 @@ dconf update || :
%{_datadir}/installed-tests/ibus
%changelog
* Thu Mar 31 2022 Takao Fujiwara <tfujiwar@redhat.com> - 1.5.26-3
- Fix refcounting issues in IBusText & IBusProperty
* Mon Mar 28 2022 Takao Fujiwara <tfujiwar@redhat.com> - 1.5.26-2
- Update ibus-desktop-testing-runner to always run ibus-daemon directly