re PR c++/30534 (ICE with invalid template argument)

	PR c++/30534
	* pt.c (any_template_arguments_need_structural_equality_p):
	Robustify.

	* g++.dg/template/arg5.C: New test.

From-SVN: r122685

gcc/cp/ChangeLog

+2007-03-08  Volker Reichelt  <reichelt@netcologne.de>
+
+	PR c++/30534
+	* pt.c (any_template_arguments_need_structural_equality_p):
+	Robustify.
+
 2007-03-08  Alexandre Oliva  <aoliva@redhat.com>
 
 	* decl.c (grokdeclarator): Disable warnings for anonymous

gcc/cp/pt.c

@@ -13131,7 +13131,9 @@ any_template_arguments_need_structural_equality_p (tree args)
       for (j = 0; j < TREE_VEC_LENGTH (level); ++j)
 	{
 	  tree arg = TREE_VEC_ELT (level, j);
-	  if (TREE_CODE (arg) == TEMPLATE_DECL
+	  if (error_operand_p (arg))
+	    return true;
+	  else if (TREE_CODE (arg) == TEMPLATE_DECL
 	      || TREE_CODE (arg) == TEMPLATE_TEMPLATE_PARM)
 	    continue;
 	  else if (TYPE_P (arg) && TYPE_STRUCTURAL_EQUALITY_P (arg))

gcc/testsuite/ChangeLog

+2007-03-08  Volker Reichelt  <reichelt@netcologne.de>
+
+	PR c++/30534
+	* g++.dg/template/arg5.C: New test.
+
 2007-03-07  Joseph Myers  <joseph@codesourcery.com>
 
 	* g++.dg/eh/arm-iwmmxt-unwind.C: New test.

gcc/testsuite/g++.dg/template/arg5.C

+// PR c++/30534
+// { dg-do compile }
+
+template<bool> struct A;
+
+template<int> void foo()
+{
+  A<__builtin_constant_p(.)> a;  // { dg-error "template argument" }
+}