[glib: 2/30] tests: Fix non-atomic access to a shared variable

[Philip Withnall <pwithnall src gnome org>]

commit a6ce0e742a5c75c53a7c702ebb1af1084065160a
Author: Philip Withnall <pwithnall endlessos org>
Date:   Wed Nov 11 18:14:29 2020 +0000

    tests: Fix non-atomic access to a shared variable
    
    And drop the `volatile` qualifier from the variable, as that doesn’t
    help with thread safety.
    
    Signed-off-by: Philip Withnall <pwithnall endlessos org>
    
    Helps: #600

 glib/tests/642026.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/glib/tests/642026.c b/glib/tests/642026.c
index ef54f14bb..26ab2ed06 100644
--- a/glib/tests/642026.c
+++ b/glib/tests/642026.c
@@ -25,7 +25,7 @@ static GMutex *mutex;
 static GCond *cond;
 static guint i;
 
-static volatile gint freed = 0;
+static gint freed = 0;  /* (atomic) */
 
 static void
 notify (gpointer p)
@@ -63,7 +63,7 @@ testcase (void)
       GThread *t1;
 
       g_static_private_init (&sp);
-      freed = 0;
+      g_atomic_int_set (&freed, 0);
 
       t1 = g_thread_create (thread_func, NULL, TRUE, NULL);
       g_assert (t1 != NULL);