--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/pr82916.c	Thu Oct 25 07:37:49 2018 +0900
@@ -0,0 +1,47 @@
+/* PR bootstrap/82916 */
+/* { dg-do run } */
+/* { dg-options "-O2 -fno-tree-dse" } */
+
+struct A { struct A *next; };
+struct C
+{
+  int *of;
+  struct C *parent, *prev, *next;
+  int depth;
+  int min;
+  struct C *min_occ;
+};
+
+__attribute__((noipa)) struct C *
+foo (int *node)
+{
+  struct A *p = __builtin_malloc (sizeof (struct C));
+  if (!p)
+    return 0;
+  p->next = 0;
+  /* Originally placement new.  */
+  struct C *nw = (struct C *)(void *)p;
+  nw->of = node;
+  nw->parent = 0;
+  nw->prev = 0;
+  nw->next = 0;
+  nw->depth = 0;
+  nw->min_occ = nw;
+  nw->min = 0;
+  return nw;
+}
+
+int
+main ()
+{
+  int o;
+  struct C *p = foo (&o);
+  if (p)
+    {
+      if (p->of != &o || p->parent || p->prev || p->next || p->depth
+	  || p->min || p->min_occ != p)
+	__builtin_abort ();
+    }
+  __builtin_free (p);
+  return 0;
+}