[3.14] gh-134546: ensure remote pdb script is readable (GH-134552) (#134616)

gh-134546: ensure remote pdb script is readable (GH-134552)
(cherry picked from commit 74a9c60)

Co-authored-by: Anthony Sottile <[email protected]>

Author: miss-islington

Lib/pdb.py

@@ -75,6 +75,7 @@
 import code
 import glob
 import json
+import stat
 import token
 import types
 import atexit
@@ -3419,6 +3420,8 @@ def attach(pid, commands=()):
             )
         )
         connect_script.close()
+        orig_mode = os.stat(connect_script.name).st_mode
+        os.chmod(connect_script.name, orig_mode | stat.S_IROTH | stat.S_IRGRP)
         sys.remote_exec(pid, connect_script.name)
 
         # TODO Add a timeout? Or don't bother since the user can ^C?

Misc/NEWS.d/next/Library/2025-05-22-18-14-13.gh-issue-134546.fjLVzK.rst

@@ -0,0 +1 @@
+Ensure :mod:`pdb` remote debugging script is readable by remote Python process.