[PATCH] Fix r216010 fallout

[Markus Trippelsdorf]

This fixes fallout from r216010, which causes Firefox build failures.
Just move the gcc_assert below the new if statement.

Boostrapped and tested on powerpc64-unknown-linux-gnu.
Ok for trunk?
Thanks.

2014-10-09  Markus Trippelsdorf  <mar...@trippelsdorf.de>

        * pa-polymorphic-call.c (check_stmt_for_type_change): Move
        assertion.

2014-10-09  Markus Trippelsdorf  <mar...@trippelsdorf.de>

        * /g++.dg/ipa/polymorphic-call-1.C: New testcase.


diff --git a/gcc/ipa-polymorphic-call.c b/gcc/ipa-polymorphic-call.c
index 51c6709a8655..7d58601ae365 100644
--- a/gcc/ipa-polymorphic-call.c
+++ b/gcc/ipa-polymorphic-call.c
@@ -1424,9 +1424,9 @@ check_stmt_for_type_change (ao_ref *ao ATTRIBUTE_UNUSED, 
tree vdef, void *data)
        }
 
       type = extr_type_from_vtbl_ptr_store (stmt, tci, &offset);
-      gcc_assert (!type || TYPE_MAIN_VARIANT (type) == type);
       if (type == error_mark_node)
        return false;
+      gcc_assert (!type || TYPE_MAIN_VARIANT (type) == type);
       if (!type)
        {
          if (dump_file)
diff --git a/gcc/testsuite/g++.dg/ipa/polymorphic-call-1.C 
b/gcc/testsuite/g++.dg/ipa/polymorphic-call-1.C
new file mode 100644
index 000000000000..2b5b54478349
--- /dev/null
+++ b/gcc/testsuite/g++.dg/ipa/polymorphic-call-1.C
@@ -0,0 +1,49 @@
+// { dg-do compile }
+// { dg-options "-O2" }
+class A;
+class B
+{
+  A *mRawPtr;
+
+public:
+  void *StartAssignment___trans_tmp_2;
+  A **
+  m_fn1 ()
+  {
+    StartAssignment___trans_tmp_2 = &mRawPtr;
+    return reinterpret_cast<A **> (StartAssignment___trans_tmp_2);
+  }
+};
+class C
+{
+public:
+  C (B &p1) : mTargetSmartPtr (p1) {}
+  operator A **() { return mTargetSmartPtr.m_fn1 (); }
+  B &mTargetSmartPtr;
+};
+class A
+{
+public:
+  A ();
+};
+class D
+{
+  D (bool);
+  B mNewEntry;
+  virtual int m_fn2 ();
+};
+C
+fn1 (B &p1)
+{
+  return p1;
+}
+void
+fn2 (bool, A **)
+{
+  new A;
+}
+D::D (bool p1)
+{
+  A **a = fn1 (mNewEntry);
+  fn2 (p1, a);
+}
-- 
Markus