commit 684eb5cb8016546f1f8652dae8febd5c6571193e
author Jason R. Coombs <jaraco@jaraco.com> Wed Jul 28 09:04:38 2021 -0400
committer GitHub <noreply@github.com> Wed Jul 28 06:04:38 2021 -0700
tree e97d94cf3b4c43787c9bafb21cf3826b4671160b
parent 5502ee052fb4257ad7438dd1130c80e1a9c4bc7f

[3.10] bpo-44461: Check early that a pdb target is valid for execution. (GH-27227) (GH-27399)



Automerge-Triggered-By: GH:jaraco

Lib/pdb.py

diff --git a/Lib/pdb.py b/Lib/pdb.py
index 1b4ff54..9432111 100755
--- a/Lib/pdb.py
+++ b/Lib/pdb.py
@@ -1694,6 +1694,14 @@ def main():
         print('Error:', mainpyfile, 'does not exist')
         sys.exit(1)
 
+    if run_as_module:
+        import runpy
+        try:
+            runpy._get_module_details(mainpyfile)
+        except Exception:
+            traceback.print_exc()
+            sys.exit(1)
+
     sys.argv[:] = args      # Hide "pdb.py" and pdb options from argument list
 
     if not run_as_module: