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-rw-r--r--Lib/gzip.py6
1 files changed, 4 insertions, 2 deletions
diff --git a/Lib/gzip.py b/Lib/gzip.py
index 5bcfe61..b6656a9 100644
--- a/Lib/gzip.py
+++ b/Lib/gzip.py
@@ -413,8 +413,10 @@ class GzipFile(io.BufferedIOBase):
if self.fileobj is None:
return b''
try:
- # 1024 is the same buffering heuristic used in read()
- self._read(max(n, 1024))
+ # Ensure that we don't return b"" if we haven't reached EOF.
+ while self.extrasize == 0:
+ # 1024 is the same buffering heuristic used in read()
+ self._read(max(n, 1024))
except EOFError:
pass
offset = self.offset - self.extrastart