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Don't crash when deleting lines at the end, fixes irssi.

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This commit is contained in:
Nicholas Marriott 2007-11-24 12:33:56 +00:00
parent a01093603b
commit 4e21786eef
1 changed files with 9 additions and 1 deletions
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10
screen-display.c
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@ -1,4 +1,4 @@
/* $Id: screen-display.c,v 1.5 2007-11-21 22:20:44 nicm Exp $ */ /* $Id: screen-display.c,v 1.6 2007-11-24 12:33:56 nicm Exp $ */
/* /*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net> * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@ -260,6 +260,8 @@ screen_display_insert_lines(struct screen *s, u_int py, u_int ny)
if (py + ny > screen_last_y(s)) if (py + ny > screen_last_y(s))
ny = screen_last_y(s) - py; ny = screen_last_y(s) - py;
if (ny == 0)
return;
/* /*
* Insert range of ny lines at py: * Insert range of ny lines at py:
@ -295,6 +297,8 @@ screen_display_insert_lines_region(struct screen *s, u_int py, u_int ny)
if (py + ny > s->rlower) if (py + ny > s->rlower)
ny = s->rlower - py; ny = s->rlower - py;
if (ny == 0)
return;
/* /*
* Insert range of ny lines at py: * Insert range of ny lines at py:
@ -330,6 +334,8 @@ screen_display_delete_lines(struct screen *s, u_int py, u_int ny)
if (py + ny > screen_last_y(s)) if (py + ny > screen_last_y(s))
ny = screen_last_y(s) - py; ny = screen_last_y(s) - py;
if (ny == 0)
return;
/* /*
* Delete range of ny lines at py: * Delete range of ny lines at py:
@ -365,6 +371,8 @@ screen_display_delete_lines_region(struct screen *s, u_int py, u_int ny)
if (py + ny > s->rlower) if (py + ny > s->rlower)
ny = s->rlower - py; ny = s->rlower - py;
if (ny == 0)
return;
/* /*
* Delete range of ny lines at py: * Delete range of ny lines at py: