1 files changed, 15 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/torture/pr45704.c b/gcc/testsuite/gcc.dg/torture/pr45704.c
new file mode 100644
index 000000000..487b30a96
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/pr45704.c
@@ -0,0 +1,15 @@
+/* { dg-do compile } */
+/* { dg-options "-fdump-tree-optimized" } */
+
+struct st {
+    int ptr;
+};
+
+int foo(struct st *st)
+{
+  int v = *(volatile int *)&st->ptr;
+  return v & 0xff;
+}
+
+/* { dg-final { scan-tree-dump-times "={v}" 1 "optimized" } } */
+/* { dg-final { cleanup-tree-dump "optimized" } } */