Use error() rather than ::error() unless explicitly required. * resource-manager.cc (instance_ok), shortcut-manager.cc (instance_ok), daspk.cc (DASPK_ABORT, DASPK_ABORT2), dasrt.cc (DASRT_ABORT, DASRT_ABORT2), dassl.cc (DASSL_ABORT, DASSL_ABORT2), debug.cc (instance_ok), display.cc (instance_ok), dynamic-ld.cc (octave_shlib_list::instance_ok, octave_dynamic_loader::instance_ok, do_load_oct, do_load_mex), file-io.cc (fopen_mode_to_ios_mode, do_stream_open, Ffprintf, Fsprintf, Fscanf, Ffscanf, get_sscanf_data, Fsscanf, do_fread, do_fwrite, Fpopen, Ftempname, convert, Fumask), graphics.in.h (graphics_toolkit::instance_ok, gh_manager::instance_ok), load-path.cc (instance_ok), ls-oct-ascii.cc (save_three_d), lsode.cc (LSODE_ABORT, LSODE_ABORT2), oct-errno.in.cc (instance_ok), octave-link.cc (connect_link), pager.cc (octave_pager_stream::instance_ok, octave_diary_stream::instance_ok), quad.cc (QUAD_ABORT, QUAD_ABORT2), sighandlers.cc (w32_interrupt_manager::instance_ok, octave_child_list::instance_ok), symtab.cc (do_update_nest), symtab.h (instance_ok), syscalls.cc (convert), toplev.h (instance_ok), txt-eng-ft.cc (instance_ok, set_mode), urlwrite.cc (instance_ok), __init_fltk__.cc (instance_ok), ov-builtin.cc (do_multi_index_op), ov-classdef.cc (class_fevalStatic, make_class, octave_classdef::subsasgn, do_multi_index_op, cdef_object_array::subsref, cdef_object_array::subsasgn, install_meth, meta_subsref, run_constructor, make_meta_class, get_value, set_value, check_method), ov-classdef.h (meta_subsref, instance_ok), ov-fcn-handle.cc (octave_fcn_handle), ov-mex-fcn.cc (do_multi_index_op), ov-range.h (octave_range), ov-typeinfo.cc (instance_ok), ov-usr-fcn.cc (subsref, do_multi_index_op), pt-arg-list.cc (Fend, convert_to_const_vector), pt-cell.cc (rvalue1), pt-colon.cc (append, rvalue1), pt-eval.cc (visit_simple_for_command, visit_switch_command), pt-exp.cc (is_logically_true, rvalue), pt-id.cc (eval_undefined_error), pt-id.h (workspace_error), pt-mat.cc (get_concat_class): Use error() rather than ::error().

--- a/libinterp/parse-tree/pt-exp.cc	Wed Aug 05 22:47:41 2015 -0700
+++ b/libinterp/parse-tree/pt-exp.cc	Thu Aug 06 08:09:01 2015 -0700
@@ -47,8 +47,8 @@
       if (t1.is_defined ())
         return t1.is_true ();
       else
-        ::error ("%s: undefined value used in conditional expression",
-                 warn_for);
+        error ("%s: undefined value used in conditional expression",
+               warn_for);
     }
 
   return expr_value;
@@ -57,14 +57,14 @@
 octave_value
 tree_expression::rvalue1 (int)
 {
-  ::error ("invalid rvalue function called in expression");
+  error ("invalid rvalue function called in expression");
   return octave_value ();
 }
 
 octave_value_list
 tree_expression::rvalue (int)
 {
-  ::error ("invalid rvalue function called in expression");
+  error ("invalid rvalue function called in expression");
   return octave_value_list ();
 }
 
@@ -77,7 +77,7 @@
 octave_lvalue
 tree_expression::lvalue (void)
 {
-  ::error ("invalid lvalue function called in expression");
+  error ("invalid lvalue function called in expression");
   return octave_lvalue ();
 }