[glib: 9/12] tests: Use separate GMainContext in thread in spawn-multithreaded

[Philip Withnall <pwithnall src gnome org>]

commit ca99cf032d85de4eed7affb084aa43823ddb7cf7
Author: Philip Withnall <pwithnall endlessos org>
Date:   Sat Mar 12 01:30:00 2022 +0000

    tests: Use separate GMainContext in thread in spawn-multithreaded
    
    Otherwise the `start_thread()` threads and the main thread are competing
    to iterate the global default context, which is probably not what was
    intended.
    
    Signed-off-by: Philip Withnall <pwithnall endlessos org>

 glib/tests/spawn-multithreaded.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
---
diff --git a/glib/tests/spawn-multithreaded.c b/glib/tests/spawn-multithreaded.c
index 05eded1cc..51e21d651 100644
--- a/glib/tests/spawn-multithreaded.c
+++ b/glib/tests/spawn-multithreaded.c
@@ -112,8 +112,10 @@ start_thread (gpointer user_data)
   GPid pid;
   SpawnChildsData *data = user_data;
   gint ttl = data->ttl;
+  GMainContext *new_main_context = NULL;
 
-  new_main_loop = g_main_loop_new (NULL, FALSE);
+  new_main_context = g_main_context_new ();
+  new_main_loop = g_main_loop_new (new_main_context, FALSE);
 
   pid = get_a_child (ttl);
   source = g_child_watch_source_new (pid);
@@ -126,6 +128,7 @@ start_thread (gpointer user_data)
 
   g_main_loop_run (new_main_loop);
   g_main_loop_unref (new_main_loop);
+  g_main_context_unref (new_main_context);
 
   return NULL;
 }