re PR c++/53836 (ICE: unexpected expression of kind template_parm_index)

	PR c++/53836
	* pt.c (value_dependent_expression_p): A TREE_LIST initializer must
	be dependent.

From-SVN: r191261

gcc/cp/ChangeLog

+2012-09-13  Jason Merrill  <jason@redhat.com>
+
+	PR c++/53836
+	* pt.c (value_dependent_expression_p): A TREE_LIST initializer must
+	be dependent.
+
 2012-09-10  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR c++/54541

gcc/cp/pt.c

@@ -19199,10 +19199,15 @@ value_dependent_expression_p (tree expression)
 
     case VAR_DECL:
        /* A constant with literal type and is initialized
-	  with an expression that is value-dependent.  */
+	  with an expression that is value-dependent.
+
+          Note that a non-dependent parenthesized initializer will have
+          already been replaced with its constant value, so if we see
+          a TREE_LIST it must be dependent.  */
       if (DECL_INITIAL (expression)
 	  && decl_constant_var_p (expression)
-	  && value_dependent_expression_p (DECL_INITIAL (expression)))
+	  && (TREE_CODE (DECL_INITIAL (expression)) == TREE_LIST
+	      || value_dependent_expression_p (DECL_INITIAL (expression))))
 	return true;
       return false;
 

gcc/testsuite/ChangeLog

+2012-09-13  Jason Merrill  <jason@redhat.com>
+
+	PR c++/53836
+	* g++.dg/template/init10.C: New.
+
 2012-09-13  Tobias Burnus  <burnus@net-b.de>
 
 	PR fortran/54556

gcc/testsuite/g++.dg/template/init10.C

+template <int N>
+struct A { };
+
+template <int Q>
+void g()
+{
+    const int M ( Q );
+
+    A<M> a;
+}
+
+void h()
+{
+    g<3>();
+}