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-rw-r--r--Lib/codecs.py5
1 files changed, 4 insertions, 1 deletions
diff --git a/Lib/codecs.py b/Lib/codecs.py
index 932f01b..6895a22 100644
--- a/Lib/codecs.py
+++ b/Lib/codecs.py
@@ -274,7 +274,10 @@ class StreamReader(Codec):
while True:
# can the request can be satisfied from the character buffer?
if chars < 0:
- if self.charbuffer:
+ if size < 0:
+ if self.charbuffer:
+ break
+ elif len(self.charbuffer) >= size:
break
else:
if len(self.charbuffer) >= chars: