re PR c++/27601 (ICE (in fold_offsetof_1, at c-common.c:5998) on strange offsetof)

	PR c++/27601
	* c-common.c (fold_offsetof_1): Handle static members.

	* g++.dg/ext/offsetof1.C: New test.

From-SVN: r114369

gcc/ChangeLog

+2006-06-04  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>
+
+	PR c++/27601
+	* c-common.c (fold_offsetof_1): Handle static members.
+
 2006-06-04 Eric Christopher <echristo@apple.com>
 
 	* stor-layout.c (start_record_layout): Initialize remaining_in_alignment.

gcc/c-common.c

@@ -5981,6 +5981,10 @@ fold_offsetof_1 (tree expr)
     case ERROR_MARK:
       return expr;
 
+    case VAR_DECL:
+      error ("cannot apply %<offsetof%> to static data member %qD", expr);
+      return error_mark_node;
+
     case INDIRECT_REF:
       return size_zero_node;
 

gcc/testsuite/ChangeLog

+2006-06-04  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>
+
+	PR c++/27601
+	* g++.dg/ext/offsetof1.C: New test.
+
 2006-06-04 Eric Christopher <echristo@apple.com>
 
 	* gcc.dg/attr-ms_struct-1.c: New.

gcc/testsuite/g++.dg/ext/offsetof1.C

+// PR c++/27601
+// Origin: Patrik Hgglund  <patrik.hagglund@bredband.net>
+// { dg-do compile }
+
+struct bar {
+  static int foo;
+};
+
+int a = __builtin_offsetof(bar, foo);  // { dg-error "static data member" }