1 files changed, 35 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/tree-ssa/pr41186.C b/gcc/testsuite/g++.dg/tree-ssa/pr41186.C
new file mode 100644
index 000000000..91f21a8c6
--- /dev/null
+++ b/gcc/testsuite/g++.dg/tree-ssa/pr41186.C
@@ -0,0 +1,35 @@
+/* { dg-do compile } */
+/* { dg-options "-O -fdump-tree-fre-details" } */
+
+struct Foo {
+  Foo() {};
+  int i;
+  short f;
+};
+struct Bar : public Foo {
+  Bar() {};
+  short b;
+};
+
+extern "C" void abort(void);
+
+int main()
+{
+  Bar b1, b2;
+  b2.i = 0;
+  b1.f = 0;
+  b1.b = 1;
+  b2.f = 1;
+  b2.b = 2;
+  static_cast<Foo&>(b1) = static_cast<Foo&>(b2);
+  if (b1.i != 0 || b1.b != 1)
+    abort ();
+  if (b1.f != 1)
+    abort ();
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump "Replaced b1.b with 1" "fre" } } */
+/* { dg-final { scan-tree-dump "Replaced b1.i with 0" "fre" { xfail *-*-* } } } */
+/* { dg-final { scan-tree-dump "Replaced b1.f with 1" "fre" { xfail *-*-* } } } */
+/* { dg-final { cleanup-tree-dump "fre" } } */