re PR middle-end/39732 (-fprofile-generate -O1: ICE: verify_stmts failed,…

re PR middle-end/39732 (-fprofile-generate -O1: ICE: verify_stmts failed, ADDRESSABLE bit not set on pointers passed to std::copy)

2009-04-11  Richard Guenther  <rguenther@suse.de>

	PR middle-end/39732
	* tree-inline.c (declare_return_variable): Mark DECL_BY_REFERENCE
	return variables as TREE_ADDRESSABLE.

	* g++.dg/torture/pr39732.C: New testcase.

From-SVN: r145954

gcc/ChangeLog

 2009-04-11  Richard Guenther  <rguenther@suse.de>
 
+	PR middle-end/39732
+	* tree-inline.c (declare_return_variable): Mark DECL_BY_REFERENCE
+	return variables as TREE_ADDRESSABLE.
+
+2009-04-11  Richard Guenther  <rguenther@suse.de>
+
 	PR tree-optimization/39713
 	* tree-ssa-sccvn.c (vn_get_expr_for): Make sure built
 	reference trees have SSA_NAME operands.

gcc/testsuite/ChangeLog

+2009-04-11  Richard Guenther  <rguenther@suse.de>
+
+	PR middle-end/39732
+	* g++.dg/torture/pr39732.C: New testcase.
+
 2009-04-11  Daniel Franke  <franke.daniel@gmail.com>
 
 	* gfortran.dg/whole_file_5.f90: New.

gcc/testsuite/g++.dg/torture/pr39732.C

+/* { dg-do compile } */
+/* { dg-options "-fprofile-generate" } */
+
+template<class _CharT>     struct char_traits;
+template<typename _OI>
+_OI __copy_move_a2(_OI __result);
+template<typename _OI>     inline _OI
+copy(_OI __result)
+{
+  return __copy_move_a2 (__result);
+}
+template<typename _CharT, typename _Traits>
+class basic_ostream     { };
+template<typename _Tp, typename _CharT = char, typename _Traits = char_traits<_CharT> >
+class ostream_iterator      {
+    typedef basic_ostream<_CharT, _Traits> ostream_type;
+    ostream_type* _M_stream;
+    const _CharT* _M_string;
+public:
+    ostream_iterator(ostream_type& __s, const _CharT* __c)
+	: _M_stream(&__s), _M_string(__c) { }
+    ostream_iterator(const ostream_iterator& __obj)
+	: _M_stream(__obj._M_stream), _M_string(__obj._M_string) { }
+};
+int f(void)
+{
+  basic_ostream<char, char_traits<char> > os;
+  copy(ostream_iterator<const int>(os, ","));
+}

gcc/tree-inline.c

@@ -2386,7 +2386,10 @@ declare_return_variable (copy_body_data *id, tree return_slot, tree modify_dest,
   STRIP_USELESS_TYPE_CONVERSION (use);
 
   if (DECL_BY_REFERENCE (result))
-    var = build_fold_addr_expr (var);
+    {
+      TREE_ADDRESSABLE (var) = 1;
+      var = build_fold_addr_expr (var);
+    }
 
  done:
   /* Register the VAR_DECL as the equivalent for the RESULT_DECL; that