[gnumeric] make sure that printareas are sane before using them

[Andreas J. Guelzow <guelzow src gnome org>]

commit 5611f542ba80e04e31b03ac3f144824a07e8d514
Author: Andreas J. Guelzow <aguelzow pyrshep ca>
Date:   Tue Jun 30 22:23:35 2009 -0600

    make sure that printareas are sane before using them
    
    2009-06-30 Andreas J. Guelzow <aguelzow pyrshep ca>
    
    	* src/sheet.c (sheet_get_nominal_printarea): make sure the
    	  range is sane

 ChangeLog   |    5 +++++
 src/sheet.c |    4 ++++
 2 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index a1899f9..30e79de 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2009-06-30 Andreas J. Guelzow <aguelzow pyrshep ca>
+
+	* src/sheet.c (sheet_get_nominal_printarea): make sure the 
+	  range is sane
+
 2009-06-28 Andreas J. Guelzow <aguelzow pyrshep ca>
 
 	* src/func-builtin.c (help_sum): change to new description type
diff --git a/src/sheet.c b/src/sheet.c
index 8170cd2..ab6548f 100644
--- a/src/sheet.c
+++ b/src/sheet.c
@@ -2080,6 +2080,10 @@ sheet_get_nominal_printarea (Sheet const *sheet)
 		r->end.col = max_cols - 1;
 	if (r->end.row >= (max_rows = gnm_sheet_get_max_rows (sheet)))
 		r->end.row = max_rows - 1;
+	if (r->start.col < 0)
+		r->start.col = 0;
+	if (r->start.row < 0)
+		r->start.row = 0;
 
 	return r;
 }