1 files changed, 22 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/volatile2.c b/gcc/testsuite/gcc.dg/volatile2.c
new file mode 100644
index 000000000..d663123c8
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/volatile2.c
@@ -0,0 +1,22 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-optimized" } */
+
+struct GTeth_desc
+{
+  unsigned ed_cmdsts;
+};
+struct GTeth_softc
+{
+  struct GTeth_desc txq_desc[32];
+};
+
+void foo(struct GTeth_softc *sc)
+{
+  /* Verify that we retain the volatileness on the
+     store until after optimization.  */
+  volatile struct GTeth_desc *p = &sc->txq_desc[0];
+  p->ed_cmdsts = 0;
+}
+
+/* { dg-final { scan-tree-dump "{v}" "optimized" } } */
+/* { dg-final { cleanup-tree-dump "optimized" } } */