re PR c++/38639 (ICE with invalid use of auto in parallel for-loop)

	PR c++/38639
	* pt.c (tsubst_omp_for_iterator): RECUR on whole init_expr instead of
	just its type.

	* g++.dg/gomp/pr38639.C: New test.

From-SVN: r142933

gcc/cp/ChangeLog

+2008-12-27  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/38639
+	* pt.c (tsubst_omp_for_iterator): RECUR on whole init_expr instead of
+	just its type.
+
 2008-12-21  Jason Merrill  <jason@redhat.com>
 
 	PR c++/38597

gcc/cp/pt.c

@@ -10334,14 +10334,11 @@ tsubst_omp_for_iterator (tree t, int i, tree declv, tree initv,
   if (auto_node && init)
     {
       tree init_expr = init;
-      tree orig_type;
       if (TREE_CODE (init_expr) == DECL_EXPR)
 	init_expr = DECL_INITIAL (DECL_EXPR_DECL (init_expr));
-      orig_type = TREE_TYPE (init_expr);
-      TREE_TYPE (init_expr) = RECUR (TREE_TYPE (init_expr));
+      init_expr = RECUR (init_expr);
       TREE_TYPE (decl)
 	= do_auto_deduction (TREE_TYPE (decl), init_expr, auto_node);
-      TREE_TYPE (init_expr) = orig_type;
     }
   gcc_assert (!type_dependent_expression_p (decl));
 

gcc/testsuite/ChangeLog

+2008-12-27  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/38639
+	* g++.dg/gomp/pr38639.C: New test.
+
 2008-12-23  Andrew Pinski  <pinskia@gmail.com>
 
 	PR middle-end/38590

gcc/testsuite/g++.dg/gomp/pr38639.C

+// PR c++/38639
+// { dg-do compile }
+// { dg-options "-fopenmp -std=c++0x" }
+
+template<int> void
+foo ()
+{
+#pragma omp parallel for
+  for (auto i = i = 0; i<4; ++i)	// { dg-error "incomplete|unable|invalid" }
+    ;
+}
+
+void
+bar ()
+{
+  foo<0> ();				// { dg-message "instantiated from here" }
+}