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authorGuido van Rossum <guido@python.org>2000-10-12 16:45:37 (GMT)
committerGuido van Rossum <guido@python.org>2000-10-12 16:45:37 (GMT)
commitb636dc67ed3c351d9631a7900ea05c3394a99518 (patch)
treeabc7c1192f0a6fd47535a4d92df8fba3daee6216 /Lib/StringIO.py
parent2e2a70abe48d84846fde5e9a64450f8b0c9934b2 (diff)
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[ Bug #116636 ] Bug in StringIO.write()
http://sourceforge.net/bugs/?func=detailbug&bug_id=116636&group_id=5470 bobalex@rsv.ricoh.com Bug report: If the file position is less than the end of the "file", and a write is performed extending past then end of the file, the data string is corrupted. Solution: in write(), when writing past the end, properly set self.len when newpos is > self.len.
Diffstat (limited to 'Lib/StringIO.py')
-rw-r--r--Lib/StringIO.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/Lib/StringIO.py b/Lib/StringIO.py
index 334bf85..6952b1a 100644
--- a/Lib/StringIO.py
+++ b/Lib/StringIO.py
@@ -129,6 +129,8 @@ class StringIO:
self.buflist = []
self.buflist = [self.buf[:self.pos], s, self.buf[newpos:]]
self.buf = ''
+ if newpos > self.len:
+ self.len = newpos
else:
self.buflist.append(s)
self.len = newpos