From b1856d7fa74e045473a530197a0dedd9052a5e95 Mon Sep 17 00:00:00 2001
From: Antoine Pitrou <solipsis@pitrou.net>
Date: Wed, 8 Sep 2010 21:07:40 +0000
Subject: Add a safety limit to the number of unicode characters we fetch
 (followup to r84635, suggested by Dave Malcolm).

---
 Tools/gdb/libpython.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Tools/gdb/libpython.py b/Tools/gdb/libpython.py
index 79f21e3..361fb03 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:
-- 
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