re PR c++/60379 (pugixml build failure caused by r207001)

	PR c++/60379
	* semantics.c (begin_maybe_infinite_loop): Use
	fold_non_dependent_expr_sfinae.

From-SVN: r208247

gcc/cp/ChangeLog

+2014-03-01  Jason Merrill  <jason@redhat.com>
+
+	PR c++/60379
+	* semantics.c (begin_maybe_infinite_loop): Use
+	fold_non_dependent_expr_sfinae.
+
 2014-02-28  Jason Merrill  <jason@redhat.com>
 
 	PR c++/58845

gcc/cp/semantics.c

@@ -503,7 +503,7 @@ begin_maybe_infinite_loop (tree cond)
   bool maybe_infinite = true;
   if (cond)
     {
-      cond = fold_non_dependent_expr (cond);
+      cond = fold_non_dependent_expr_sfinae (cond, tf_none);
       cond = maybe_constant_value (cond);
       maybe_infinite = integer_nonzerop (cond);
     }

gcc/testsuite/g++.dg/template/loop1.C

+// PR c++/60379
+
+template <int> struct A {
+  void m_fn1(int p1) {
+    int *a;
+    while (p1 && *static_cast<int *>(static_cast<void *>(a)))
+      ;
+  }
+};