1 files changed, 33 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/execute/pr43784.c b/gcc/testsuite/gcc.c-torture/execute/pr43784.c
new file mode 100644
index 000000000..622232725
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/pr43784.c
@@ -0,0 +1,33 @@
+struct s {
+  unsigned char a[256];
+};
+union u {
+  struct { struct s b; int c; } d;
+  struct { int c; struct s b; } e;
+};
+
+static union u v;
+static struct s *p = &v.d.b;
+static struct s *q = &v.e.b;
+
+static struct s __attribute__((noinline)) rp(void)
+{
+  return *p;
+}
+
+static void qp(void)
+{
+  *q = rp();
+}
+
+int main()
+{
+  int i;
+  for (i = 0; i < 256; i++)
+    p->a[i] = i;
+  qp();
+  for (i = 0; i < 256; i++)
+    if (q->a[i] != i)
+      __builtin_abort();
+  return 0;
+}