--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/pr67830.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,22 @@
+/* PR tree-optimization/67830 */
+/* { dg-do run } */
+/* { dg-options "-O2" } */
+
+int a, b, *g, h;
+unsigned char c, d;
+
+int
+main ()
+{
+  int f, e = -2;
+  b = e;
+  g = &b;
+  h = c = a + 1;
+  f = d - h;
+  *g &= f;
+
+  if (b != -2)
+    __builtin_abort ();
+
+  return 0;
+}