[PATCH] tests/qtest/virtio-net-failover: Use g_file_open_tmp() to create temporary file

[Thomas Huth]

g_test_rand_int() must not be called before g_test_init(), otherwise
the glib will show a "g_rand_int: assertion 'rand != NULL' failed"
message in the log. So we could change the order here, but actually,
it's safer to use g_file_open_tmp() anyway, so let's use that function
now instead.

Reported-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
---
 tests/qtest/virtio-net-failover.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/tests/qtest/virtio-net-failover.c 
b/tests/qtest/virtio-net-failover.c
index 4b2ba8a106..22ad54bb95 100644
--- a/tests/qtest/virtio-net-failover.c
+++ b/tests/qtest/virtio-net-failover.c
@@ -1306,13 +1306,15 @@ static void test_multi_in(gconstpointer opaque)
 
 int main(int argc, char **argv)
 {
-    const gchar *tmpdir = g_get_tmp_dir();
-    gchar *tmpfile = g_strdup_printf("%s/failover_test_migrate-%u-%u",
-                                     tmpdir, getpid(), g_test_rand_int());
+    gchar *tmpfile;
     int ret;
 
     g_test_init(&argc, &argv, NULL);
 
+    ret = g_file_open_tmp("failover_test_migrate-XXXXXX", &tmpfile, NULL);
+    g_assert_true(ret >= 0);
+    close(ret);
+
     qtest_add_func("failover-virtio-net/params/error/id", test_error_id);
     qtest_add_func("failover-virtio-net/params/error/pcie", test_error_pcie);
     qtest_add_func("failover-virtio-net/params/on", test_on);
-- 
2.27.0