From: Antoine Pitrou <solipsis@pitrou.net>
Date: Wed, 8 Sep 2010 21:07:40 +0000 (+0000)
Subject: Add a safety limit to the number of unicode characters we fetch
X-Git-Tag: v3.2a3~371
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=b1856d7fa74e045473a530197a0dedd9052a5e95;p=thirdparty%2FPython%2Fcpython.git

Add a safety limit to the number of unicode characters we fetch
(followup to r84635, suggested by Dave Malcolm).
---

diff --git a/Tools/gdb/libpython.py b/Tools/gdb/libpython.py
index 79f21e3f86ab..361fb033037f 100644
--- a/Tools/gdb/libpython.py
+++ b/Tools/gdb/libpython.py
@@ -1103,7 +1103,8 @@ class PyUnicodeObjectPtr(PyObjectPtr):
             # inferior process: we must join surrogate pairs.
             Py_UNICODEs = []
             i = 0
-            while i < field_length:
+            limit = safety_limit(field_length)
+            while i < limit:
                 ucs = int(field_str[i])
                 i += 1
                 if ucs < 0xD800 or ucs >= 0xDC00 or i == field_length: