re PR c++/56838 (GCC svn doesn't compile libreoffice 4.0.1.2)

	PR c++/56838
	PR c++/17232
	* typeck2.c (abstract_virtuals_error_sfinae): Disable
	complete_type again.

From-SVN: r197613

gcc/cp/ChangeLog

+2013-04-04  Jason Merrill  <jason@redhat.com>
+
+	PR c++/56838
+	PR c++/17232
+	* typeck2.c (abstract_virtuals_error_sfinae): Disable
+	complete_type again.
+
 2013-04-08  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR c++/56871

gcc/cp/typeck2.c

@@ -265,9 +265,13 @@ abstract_virtuals_error_sfinae (tree decl, tree type, abstract_class_use use,
     return 0;
   type = TYPE_MAIN_VARIANT (type);
 
+#if 0
+  /* Instantiation here seems to be required by the standard,
+     but breaks e.g. boost::bind.  FIXME!  */
   /* In SFINAE, non-N3276 context, force instantiation.  */
   if (!(complain & (tf_error|tf_decltype)))
     complete_type (type);
+#endif
 
   /* If the type is incomplete, we register it within a hash table,
      so that we can check again once it is completed. This makes sense

gcc/testsuite/g++.dg/template/abstract-dr337.C

@@ -6,8 +6,8 @@ class A {
 };
 
 template<typename T>
-void g(T (*a)[1]) {}		// { dg-error "abstract" "" }
+void g(T (*a)[1]) {}		// { dg-error "abstract" "" { xfail *-*-* } }
 
 int main() {
-  g<A<int> >(0);  // { dg-error "no matching function" }
+  g<A<int> >(0);  // { dg-error "no matching function" "" { xfail *-*-* } }
 }