1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/anon-struct-15.c b/gcc/testsuite/gcc.dg/anon-struct-15.c
new file mode 100644
index 000000000..d9e786a8d
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/anon-struct-15.c
@@ -0,0 +1,16 @@
+/* Test diagnostics for duplicate field names involving anonymous
+   struct or union as first field.  PR 46889.  */
+/* { dg-do compile } */
+/* { dg-options "" } */
+
+struct foo {
+  union {
+    struct {
+      unsigned long time_stamp;
+    };
+    struct {
+      int *page;
+    };
+  };
+  int *page; /* { dg-error "duplicate member" } */
+};