PSPP-BUG: [bug #30689] GUI crashes after a syntax error.

[Ben Pfaff]

Follow-up Comment #3, bug #30689 (project pspp):

Applying the following patch causes an assertion failure:


diff --git a/src/data/datasheet.c b/src/data/datasheet.c
index 4abc526..d84407a 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
@@ -382,6 +382,8 @@ 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;


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