1 files changed, 39 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/g++.dg/opt/pr51596.C b/gcc-4.9/gcc/testsuite/g++.dg/opt/pr51596.C
new file mode 100644
index 000000000..2ed94812d
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/g++.dg/opt/pr51596.C
@@ -0,0 +1,39 @@
+// PR tree-optimization/51596
+// { dg-do compile }
+// { dg-options "-O -fnon-call-exceptions" }
+
+struct A { float v[2]; };
+struct B { int v[2]; };
+
+struct C
+{
+  B c;
+  C f ()
+  {
+    B b;
+    for (int i = 0; i < 2; i++)
+      b.v[i] = c.v[i];
+    return *this;
+  }
+};
+
+struct D
+{
+  A d;
+  D (B x)
+  {
+    for (int i = 0; i < 2; i++)
+      d.v[i] = x.v[i];
+  }
+};
+
+int bar ();
+
+C i;
+
+void
+foo ()
+{
+  while (bar ())
+    D (i.f ().c);
+}