X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fdata%2Fdatasheet.c;h=de59e73fe842f4fa94009d24b626cc9157464306;hb=32bcf82d7525c3e50d63064ff32b1545989836b8;hp=fa24d8ce77014e980cb79e4700ffc63832c5d061;hpb=bd17d2af982332ee1791998361b1ac6731fe14fa;p=pspp

diff --git a/src/data/datasheet.c b/src/data/datasheet.c
index fa24d8ce77..de59e73fe8 100644
--- a/src/data/datasheet.c
+++ b/src/data/datasheet.c
@@ -1,5 +1,5 @@
 /* PSPP - a program for statistical analysis.
-   Copyright (C) 2007, 2009 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009, 2010 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -275,7 +275,7 @@ datasheet_destroy (struct datasheet *ds)
 const struct caseproto *
 datasheet_get_proto (const struct datasheet *ds_)
 {
-  struct datasheet *ds = (struct datasheet *) ds_;
+  struct datasheet *ds = CONST_CAST (struct datasheet *, ds_);
   if (ds->proto == NULL)
     {
       size_t i;
@@ -360,6 +360,8 @@ datasheet_insert_column (struct datasheet *ds,
 {
   struct column *col;
 
+  assert (before <= ds->n_columns);
+
   ds->columns = xnrealloc (ds->columns,
                            ds->n_columns + 1, sizeof *ds->columns);
   insert_element (ds->columns, ds->n_columns, sizeof *ds->columns, before);
@@ -382,6 +384,8 @@ datasheet_insert_column (struct datasheet *ds,
 void
 datasheet_delete_columns (struct datasheet *ds, size_t start, size_t n)
 {
+  assert (start + n <= ds->n_columns);
+
   if (n > 0)
     {
       size_t i;
@@ -411,6 +415,9 @@ datasheet_move_columns (struct datasheet *ds,
                         size_t old_start, size_t new_start,
                         size_t n)
 {
+  assert (old_start + n <= ds->n_columns);
+  assert (new_start + n <= ds->n_columns);
+
   move_range (ds->columns, ds->n_columns, sizeof *ds->columns,
               old_start, new_start, n);
 
@@ -548,7 +555,7 @@ datasheet_get_row (const struct datasheet *ds, casenumber row)
 {
   size_t n_columns = datasheet_get_n_columns (ds);
   struct ccase *c = case_create (datasheet_get_proto (ds));
-  if (rw_case ((struct datasheet *) ds, OP_READ,
+  if (rw_case (CONST_CAST (struct datasheet *, ds), OP_READ,
                row, 0, n_columns, case_data_all_rw (c)))
     return c;
   else
@@ -582,7 +589,8 @@ datasheet_get_value (const struct datasheet *ds, casenumber row,
                      size_t column, union value *value)
 {
   assert (row >= 0);
-  return rw_case ((struct datasheet *) ds, OP_READ, row, column, 1, value);
+  return rw_case (CONST_CAST (struct datasheet *, ds), OP_READ,
+                  row, column, 1, value);
 }
 
 /* Stores VALUE into DS in the given ROW and COLUMN.  VALUE must