typeck.c (build_const_cast): Tweak last change to handle templates correctly.

* typeck.c (build_const_cast): Tweak last change to handle
	templates correctly.

From-SVN: r26712

gcc/cp/ChangeLog

@@ -1,5 +1,8 @@
 1999-04-30  Mark Mitchell  <mark@codesourcery.com>
 
+	* typeck.c (build_const_cast): Tweak last change to handle
+	templates correctly.
+
 	* typeck.c (build_const_cast): Disallow use of const_cast to
 	anything but a pointer or reference type.
 

gcc/cp/typeck.c

@@ -5633,14 +5633,6 @@ build_const_cast (type, expr)
   if (type == error_mark_node || expr == error_mark_node)
     return error_mark_node;
 
-  if (!POINTER_TYPE_P (type) && !TYPE_PTRMEMFUNC_P (type))
-    {
-      cp_error ("`%T' is not a pointer, reference, or pointer-to-member type",
-		type);
-      cp_error ("as required by const_cast");
-      return error_mark_node;
-    }
-
   if (TREE_CODE (expr) == OFFSET_REF)
     expr = resolve_offset_ref (expr);
 
@@ -5651,6 +5643,14 @@ build_const_cast (type, expr)
       return t;
     }
 
+  if (!POINTER_TYPE_P (type) && !TYPE_PTRMEMFUNC_P (type))
+    {
+      cp_error ("`%T' is not a pointer, reference, or pointer-to-member type",
+		type);
+      cp_error ("as required by const_cast");
+      return error_mark_node;
+    }
+
   if (TREE_CODE (type) != REFERENCE_TYPE)
     {
       expr = decay_conversion (expr);

gcc/testsuite/g++.old-deja/g++.pt/cast1.C

@@ -0,0 +1,7 @@
+// Build don't link:
+// Origin: Mark Mitchell <mark@codesourcery.com>
+
+template <class T>
+void f (T t) {
+  const_cast<T>(t);
+}