re PR c++/12932 (ICE with use of ptr-to-function as template arg)

PR c++/12932
	* class.c (currently_open_derived_class): Check if
	current_class_type is NULL_TREE.
	* semantics.c (finish_call_expr): Check if
	currently_open_derived_class returns NULL_TREE.
	* cp-tree.h (DERIVED_FROM_P): Add parenthesis around PARENT
	parameter.

	* g++.dg/template/static5.C: New test.

From-SVN: r73705

gcc/cp/ChangeLog

@@ -1,3 +1,13 @@
+2003-11-18  Kriang Lerdsuwanakij  <lerdsuwa@users.sourceforge.net>
+
+	PR c++/12932
+	* class.c (currently_open_derived_class): Check if
+	current_class_type is NULL_TREE.
+	* semantics.c (finish_call_expr): Check if
+	currently_open_derived_class returns NULL_TREE.
+	* cp-tree.h (DERIVED_FROM_P): Add parenthesis around PARENT
+	parameter.
+
 2003-11-17  Jason Merrill  <jason@redhat.com>
 
 	* init.c (build_new_1): Preevaluate placement args.

gcc/cp/class.c

@@ -5585,6 +5585,9 @@ currently_open_derived_class (tree t)
   if (dependent_type_p (t))
     return NULL_TREE;
 
+  if (!current_class_type)
+    return NULL_TREE;
+
   if (DERIVED_FROM_P (t, current_class_type))
     return current_class_type;
 

gcc/cp/cp-tree.h

@@ -1000,7 +1000,7 @@ enum languages { lang_c, lang_cplusplus, lang_java };
 /* Nonzero iff TYPE is derived from PARENT. Ignores accessibility and
    ambiguity issues.  */
 #define DERIVED_FROM_P(PARENT, TYPE) \
-  (lookup_base ((TYPE), PARENT, ba_any, NULL) != NULL_TREE)
+  (lookup_base ((TYPE), (PARENT), ba_any, NULL) != NULL_TREE)
 /* Nonzero iff TYPE is uniquely derived from PARENT. Ignores
    accessibility.  */
 #define UNIQUELY_DERIVED_FROM_P(PARENT, TYPE) \

gcc/cp/semantics.c

@@ -1638,6 +1638,8 @@ finish_call_expr (tree fn, tree args, bool disallow_virtual, bool koenig_p)
       if (DECL_FUNCTION_MEMBER_P (f))
 	{
 	  tree type = currently_open_derived_class (DECL_CONTEXT (f));
+	  if (!type)
+	    type = DECL_CONTEXT (f);
 	  fn = build_baselink (TYPE_BINFO (type),
 			       TYPE_BINFO (type),
 			       fn, /*optype=*/NULL_TREE);

gcc/testsuite/ChangeLog

@@ -1,3 +1,8 @@
+2003-11-18  Kriang Lerdsuwanakij  <lerdsuwa@users.sourceforge.net>
+
+	PR c++/12932
+	* g++.dg/template/static5.C: New test.
+
 2003-11-18  Joseph S. Myers  <jsm@polyomino.org.uk>
 
 	* gcc.dg/nested-func-1.c: New test.

gcc/testsuite/g++.dg/template/static5.C

@@ -0,0 +1,17 @@
+// { dg-do compile }
+
+// Origin: Mirek Fidler <cxl@ntllib.org>
+//         Wolfgang Bangerth <bangerth@ticam.utexas.edu>
+
+// PR c++/12932: ICE address of static function as template argument
+
+struct Test {
+    static void fun();
+};
+
+template <void (*fun)()>
+void foo () { (*fun)(); }
+
+
+template
+void foo<Test::fun> ();