re PR c++/38795 (ICE with reinterpret_cast and variadic templates)

	PR c++/38795
	* tree.c (cp_walk_subtrees): Handle REINTERPRET_CAST_EXPR,
	STATIC_CAST_EXPR, CONST_CAST_EXPR and DYNAMIC_CAST_EXPR the same
	as CAST_EXPR.

	* g++.dg/cpp0x/pr38795.C: New test.

From-SVN: r143351

gcc/cp/ChangeLog

+2009-01-13  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/38795
+	* tree.c (cp_walk_subtrees): Handle REINTERPRET_CAST_EXPR,
+	STATIC_CAST_EXPR, CONST_CAST_EXPR and DYNAMIC_CAST_EXPR the same
+	as CAST_EXPR.
+
 2009-01-12  Jason Merrill  <jason@redhat.com>
 	    Steve Ellcey  <sje@cup.hp.com>
 

gcc/cp/tree.c

 /* Language-dependent node constructors for parse phase of GNU compiler.
    Copyright (C) 1987, 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
-   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008
+   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009
    Free Software Foundation, Inc.
    Hacked by Michael Tiemann (tiemann@cygnus.com)
 
@@ -2443,6 +2443,10 @@ cp_walk_subtrees (tree *tp, int *walk_subtrees_p, walk_tree_fn func,
       break;
 
     case CAST_EXPR:
+    case REINTERPRET_CAST_EXPR:
+    case STATIC_CAST_EXPR:
+    case CONST_CAST_EXPR:
+    case DYNAMIC_CAST_EXPR:
       if (TREE_TYPE (*tp))
 	WALK_SUBTREE (TREE_TYPE (*tp));
 

gcc/testsuite/ChangeLog

+2009-01-13  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/38795
+	* g++.dg/cpp0x/pr38795.C: New test.
+
 2009-01-13  Daniel Jacobowitz  <dan@codesourcery.com>
 	    Nathan Froyd  <froydnj@codesourcery.com>
 	    Joseph Myers  <joseph@codesourcery.com>

gcc/testsuite/g++.dg/cpp0x/pr38795.C

+// PR c++/38795
+// { dg-do compile }
+// { dg-options "-std=gnu++0x" }
+
+template<typename... T> int foo(int i)
+{
+  return *reinterpret_cast<T*>(i);	// { dg-error "not expanded with|T" }
+}
+
+void bar(int i)
+{
+  foo<int>(i);
+}