From 854e76effaa272feed874c0e828ee679a3949dc2 Mon Sep 17 00:00:00 2001 From: Raymond Hettinger Date: Sun, 20 Jul 2014 21:30:32 -0700 Subject: Issue #21868: Prevent turtle crash due to invalid undo buffer size. --- Lib/turtle.py | 2 +- Misc/NEWS | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/Lib/turtle.py b/Lib/turtle.py index 465d6e0..c9e88d9 100644 --- a/Lib/turtle.py +++ b/Lib/turtle.py @@ -2594,7 +2594,7 @@ class RawTurtle(TPen, TNavigator): Example (for a Turtle instance named turtle): >>> turtle.setundobuffer(42) """ - if size is None: + if size is None or size <= 0: self.undobuffer = None else: self.undobuffer = Tbuffer(size) diff --git a/Misc/NEWS b/Misc/NEWS index b326985..08b3c6f 100644 --- a/Misc/NEWS +++ b/Misc/NEWS @@ -30,6 +30,8 @@ Library - Issue #21044: tarfile.open() now handles fileobj with an integer 'name' attribute. Based on patch by Martin Panter. +- Issue #21867: Prevent turtle crash due to invalid undo buffer size. + - Issue #19076: Don't pass the redundant 'file' argument to self.error(). - Issue #21942: Fixed source file viewing in pydoc's server mode on Windows. -- cgit v0.12