1 files changed, 51 insertions, 0 deletions
diff --git a/meta/recipes-core/glib-2.0/glib-2.0/0021-tests-Drop-unnecessary-volatile-qualifiers-from-test.patch b/meta/recipes-core/glib-2.0/glib-2.0/0021-tests-Drop-unnecessary-volatile-qualifiers-from-test.patch
new file mode 100644
index 0000000000..b8ed99ce15
--- /dev/null
+++ b/meta/recipes-core/glib-2.0/glib-2.0/0021-tests-Drop-unnecessary-volatile-qualifiers-from-test.patch
@@ -0,0 +1,51 @@
+From 8a112c3c6e5fe6838ee29eec7caa62ba32d9bc40 Mon Sep 17 00:00:00 2001
+From: Philip Withnall <pwithnall@endlessos.org>
+Date: Wed, 11 Nov 2020 19:22:49 +0000
+Subject: [PATCH 21/29] tests: Drop unnecessary volatile qualifiers from tests
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+These variables were already (correctly) accessed atomically. The
+`volatile` qualifier doesn’t help with that.
+
+Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
+
+Helps: #600
+Upstream-Status: Backport [https://gitlab.gnome.org/GNOME/glib/-/merge_requests/1719]
+---
+ gobject/tests/qdata.c       | 2 +-
+ gobject/tests/threadtests.c | 4 ++--
+ 2 files changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/gobject/tests/qdata.c b/gobject/tests/qdata.c
+index 528bdc68e..7d46efb15 100644
+--- a/gobject/tests/qdata.c
++++ b/gobject/tests/qdata.c
+@@ -17,7 +17,7 @@ gboolean fail;
+ #define ROUNDS 10000
+ 
+ GObject *object;
+-volatile gint bucket[THREADS];
++gint bucket[THREADS];  /* accessed from multiple threads, but should never be contested due to the sequence of thread operations */
+ 
+ static gpointer
+ thread_func (gpointer data)
+diff --git a/gobject/tests/threadtests.c b/gobject/tests/threadtests.c
+index e341a9d67..b6f9e17fa 100644
+--- a/gobject/tests/threadtests.c
++++ b/gobject/tests/threadtests.c
+@@ -27,8 +27,8 @@
+ #include <glib.h>
+ #include <glib-object.h>
+ 
+-static volatile int mtsafe_call_counter = 0; /* multi thread safe call counter */
+-static int          unsafe_call_counter = 0; /* single-threaded call counter */
++static int mtsafe_call_counter = 0; /* multi thread safe call counter, must be accessed atomically */
++static int unsafe_call_counter = 0; /* single-threaded call counter */
+ static GCond sync_cond;
+ static GMutex sync_mutex;
+ 
+-- 
+2.30.1
+