in backup_lines(), avoid a segfault when the mark begins and ends on the

line after the last line of the paragraph


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@4099 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

ChangeLog

+2007-04-22  David Lawrence Ramsey  <pooka109@gmail.com>
+
+	* text.c (backup_lines): Avoid a segfault when the mark begins
+	and ends on the line after the last line of the paragraph.
+
 2007-04-21  David Lawrence Ramsey  <pooka109@gmail.com>
 
 	* files.c (do_writeout): If we're in restricted mode, we're not

src/text.c

@@ -1212,9 +1212,16 @@ void backup_lines(filestruct *first_line, size_t par_len)
      * line, putting first_line, edittop, current, and mark_begin at the
      * same lines in the copied paragraph that they had in the original
      * paragraph. */
-    if (openfile->current != openfile->fileage)
+    if (openfile->current != openfile->fileage) {
 	top = openfile->current->prev;
-    else
+#ifndef NANO_TINY
+	if (old_mark_set &&
+		openfile->current->lineno == mb_lineno_save) {
+	    openfile->mark_begin = openfile->current;
+	    openfile->mark_begin_x = mark_begin_x_save;
+	}
+#endif
+    } else
 	top = openfile->current;
     for (i = par_len; i > 0 && top != NULL; i--) {
 	if (top->lineno == fl_lineno_save)