tarfile.open() with mode 'x' created files without an end of archive marker.
diff --git a/Lib/tarfile.py b/Lib/tarfile.py
index 0f1c825..bf2234f 100755
--- a/Lib/tarfile.py
+++ b/Lib/tarfile.py
@@ -1484,7 +1484,7 @@
except HeaderError as e:
raise ReadError(str(e))
- if self.mode in "aw":
+ if self.mode in ("a", "w", "x"):
self._loaded = True
if self.pax_headers:
@@ -1716,7 +1716,7 @@
self.closed = True
try:
- if self.mode in "aw":
+ if self.mode in ("a", "w", "x"):
self.fileobj.write(NUL * (BLOCKSIZE * 2))
self.offset += (BLOCKSIZE * 2)
# fill up the end with zero-blocks