re PR c++/47511 ([C++0x] ICE: unexpected ast of kind template_decl in…

re PR c++/47511 ([C++0x] ICE: unexpected ast of kind template_decl in potential_constant_expression_1, at cp/semantics.c:7711)

	PR c++/47511
	* semantics.c (potential_constant_expression_1): Handle TEMPLATE_DECL.

From-SVN: r170005

gcc/cp/ChangeLog

+2011-02-09  Jason Merrill  <jason@redhat.com>
+
+	PR c++/47511
+	* semantics.c (potential_constant_expression_1): Handle TEMPLATE_DECL.
+
 2011-02-03  Dodji Seketeli  <dodji@redhat.com>
 
 	PR c++/47398

gcc/cp/semantics.c

@@ -7263,6 +7263,7 @@ potential_constant_expression_1 (tree t, bool want_rval, tsubst_flags_t flags)
     {
     case FUNCTION_DECL:
     case BASELINK:
+    case TEMPLATE_DECL:
     case OVERLOAD:
     case TEMPLATE_ID_EXPR:
     case LABEL_DECL:

gcc/testsuite/ChangeLog

+2011-02-09  Jason Merrill  <jason@redhat.com>
+
+	* g++.dg/cpp0x/regress: New directory.
+	* g++.dg/cpp0x/constexpr-regress1.C: Move to regress/regress1.C.
+	* g++.dg/cpp0x/constexpr-regress2.C: Move to regress/regress2.C.
+	* g++.dg/cpp0x/regress/regress3.C: New.
+
 2011-02-10  Richard Guenther  <rguenther@suse.de>
 
 	PR tree-optimization/47677

gcc/testsuite/g++.dg/cpp0x/regress/README

+This directory contains tests that were passing in C++98 mode but failing
+in C++0x mode; it should be replaced by an improvement to the test harness
+to run all tests in both modes.

gcc/testsuite/g++.dg/cpp0x/regress/regress3.C

+// PR c++/47511
+// { dg-options -std=c++0x }
+
+namespace N {
+    template <typename T> bool g( T ) {
+        return true;
+    }
+    struct A { };
+}
+template <class T> void f(const T&) {
+    N::A x;
+    g(x) ;
+}