commit 371432b961b7f5b410c13b0022e23111115f1d59
author Serhiy Storchaka <storchaka@gmail.com> Mon Apr 08 22:33:55 2013 +0300
committer Serhiy Storchaka <storchaka@gmail.com> Mon Apr 08 22:33:55 2013 +0300
tree aba081850b1cfbb4bde8f98756118f4818fae05f
parent 6cb4343d0d374a1b0ba01390ccef5b8868a5e9fc

Close #17666: Fix reading gzip files with an extra field.

Lib/gzip.py

diff --git a/Lib/gzip.py b/Lib/gzip.py
index a2f2367..99b2d3e 100644
--- a/Lib/gzip.py
+++ b/Lib/gzip.py
@@ -202,7 +202,8 @@
 
         if flag & FEXTRA:
             # Read & discard the extra field, if present
-            self._read_exact(struct.unpack("<H", self._read_exact(2)))
+            extra_len, = struct.unpack("<H", self._read_exact(2))
+            self._read_exact(extra_len)
         if flag & FNAME:
             # Read and discard a null-terminated string containing the filename
             while True: