1 files changed, 21 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/ext/sync-3.C b/gcc/testsuite/g++.dg/ext/sync-3.C
new file mode 100644
index 000000000..99faac7bc
--- /dev/null
+++ b/gcc/testsuite/g++.dg/ext/sync-3.C
@@ -0,0 +1,21 @@
+// PR debug/41801
+// { dg-do compile }
+// { dg-options "-O2 -g" }
+
+struct T
+{
+  void
+  foo () volatile
+  {
+    __sync_lock_release (&t);
+    __sync_synchronize ();
+  }
+  bool t;
+};
+
+int
+main ()
+{
+  T t = { false };
+  t.foo ();
+}