--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/g++.dg/torture/pr33134.C	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,21 @@
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+/* Used to crash in VRP.  */
+/* Testcase by Martin Michlmayr <tbm@cyrius.com> */
+
+class FXObject;
+class FXStream
+{
+  public:FXStream (const FXObject *cont = __null);
+  FXStream & operator<< (const unsigned char &v);
+};
+
+bool fxsaveGIF (FXStream &store)
+{
+  int bitsperpixel;
+  unsigned char c1;
+  c1 = 0x80;
+  c1 |= (bitsperpixel - 1) << 4;
+  store << c1;
+}