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[PULL,08/31] libqtest: fix memory leak in the qtest_qmp_event_ref

Message ID 20201026100632.212530-9-thuth@redhat.com
State New
Headers show
Series [PULL,01/31] tests/migration: fix memleak in wait_command/wait_command_fd | expand

Commit Message

Thomas Huth Oct. 26, 2020, 10:06 a.m. UTC 
From: Maxim Levitsky <mlevitsk@redhat.com>

The g_list_remove_link doesn't free the link element,
opposed to what I thought.
Switch to g_list_delete_link that does free it.

Also refactor the code a bit.
Thanks for Max Reitz for helping me with this.

Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20201019163702.471239-4-mlevitsk@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
---
 tests/qtest/libqtest.c | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)
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Patch

diff --git a/tests/qtest/libqtest.c b/tests/qtest/libqtest.c
index 0e304bdbd1..99deff47ef 100644
--- a/tests/qtest/libqtest.c
+++ b/tests/qtest/libqtest.c
@@ -795,15 +795,12 @@  void qtest_qmp_send_raw(QTestState *s, const char *fmt, ...)
 
 QDict *qtest_qmp_event_ref(QTestState *s, const char *event)
 {
-    GList *next = NULL;
-    QDict *response;
-
-    for (GList *it = s->pending_events; it != NULL; it = next) {
+    while (s->pending_events) {
 
-        next = it->next;
-        response = (QDict *)it->data;
+        GList *first = s->pending_events;
+        QDict *response = (QDict *)first->data;
 
-        s->pending_events = g_list_remove_link(s->pending_events, it);
+        s->pending_events = g_list_delete_link(s->pending_events, first);
 
         if (!strcmp(qdict_get_str(response, "event"), event)) {
             return response;