commit 9d2c2a8e3b8fe18ee1568bfa4a419847b3e78575
author Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> Wed Nov 25 01:52:51 2020 -0800
committer GitHub <noreply@github.com> Wed Nov 25 01:52:51 2020 -0800
tree 5e17825f2098e58a35093cba9f60de57575af62d
parent 543724b972c27626d9e5bc6a644dcf2db22c96b2

bpo-12800: tarfile: Restore fix from 011525ee9 (GH-21409)


Restore fix from 011525ee92eb1c13ad1a62d28725a840e28f8160.
(cherry picked from commit 4fedd7123eaf147edd55eabbbd72e0bcc8368e47)

Co-authored-by: Julien Palard <julien@palard.fr>

Lib/tarfile.py

diff --git a/Lib/tarfile.py b/Lib/tarfile.py
index e422794..1d15612 100755
--- a/Lib/tarfile.py
+++ b/Lib/tarfile.py
@@ -2237,6 +2237,9 @@
         try:
             # For systems that support symbolic and hard links.
             if tarinfo.issym():
+                if os.path.lexists(targetpath):
+                    # Avoid FileExistsError on following os.symlink.
+                    os.unlink(targetpath)
                 os.symlink(tarinfo.linkname, targetpath)
             else:
                 # See extract().