1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pure-1.c b/gcc/testsuite/gcc.dg/pure-1.c
new file mode 100644
index 000000000..f365c8dae
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pure-1.c
@@ -0,0 +1,16 @@
+/* Regression test for PR middle-end/23584 */
+/* Verify that dereferencing a volatile element in a struct causes
+   the function not be pure.  */
+
+/* { dg-do compile } */
+/* { dg-options "-O1 -fdump-ipa-pure-const" } */
+
+struct test_a { volatile int a; };
+
+int func_a(struct test_a *a)
+{
+        return a->a;
+}
+
+/* { dg-final { scan-ipa-dump-not "found to be pure: func_a" "pure-const" } } */
+/* { dg-final { cleanup-ipa-dump "pure-const" } } */