re PR c++/23993 (Mysterious compiler error when accessing a 2d-array in a template class)

	PR c++/23993
	* init.c (integral_constant_value): Use DECL_INTEGRAL_CONSTANT_VAR_P.

	PR c++/23993
	* g++.dg/template/array14.C: New test.

From-SVN: r104511

gcc/cp/ChangeLog

+2005-09-21  Mark Mitchell  <mark@codesourcery.com>
+
+	PR c++/23993
+	* init.c (integral_constant_value): Use DECL_INTEGRAL_CONSTANT_VAR_P.
+
 2005-09-21  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>
 
 	PR c++/23965

gcc/cp/init.c

@@ -1567,12 +1567,8 @@ build_offset_ref (tree type, tree name, bool address_p)
 tree
 integral_constant_value (tree decl)
 {
-  while ((TREE_CODE (decl) == CONST_DECL
-	  || (TREE_CODE (decl) == VAR_DECL
-	      /* And so are variables with a 'const' type -- unless they
-		 are also 'volatile'.  */
-	      && CP_TYPE_CONST_NON_VOLATILE_P (TREE_TYPE (decl))
-	      && DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P (decl))))
+  while (TREE_CODE (decl) == CONST_DECL
+	 || DECL_INTEGRAL_CONSTANT_VAR_P (decl))
     {
       tree init;
       /* If DECL is a static data member in a template class, we must

gcc/testsuite/ChangeLog

+2005-09-21  Mark Mitchell  <mark@codesourcery.com>
+
+	PR c++/23993
+	* g++.dg/template/array14.C: New test.
+
 2005-09-21  Erik Edelmann  <erik.edelmann@iki.fi>
 
 	PR fortran/19929

gcc/testsuite/g++.dg/template/array14.C

+// PR c++/23993
+
+const int data[2][4] = {
+  { 0, 1, 2, 3 }
+};
+
+template <typename T>
+void t(int k) {
+  int candidate = data[1][k];
+}