https://github.com/python/cpython/commit/bb9604b62ae7f043594ffea9287f9213067cc7fb
commit: bb9604b62ae7f043594ffea9287f9213067cc7fb
branch: main
author: Tian Gao <[email protected]>
committer: gaogaotiantian <[email protected]>
date: 2024-10-15T11:45:23-04:00
summary:
gh-100141: Allow pdb to deal with empty file (#125425)
files:
A Misc/NEWS.d/next/Library/2024-10-14-02-27-03.gh-issue-100141.NuAcwa.rst
M Lib/pdb.py
M Lib/test/test_pdb.py
diff --git a/Lib/pdb.py b/Lib/pdb.py
index d9aed24bfcd8e7..2b36b1e3fa7cbe 100644
--- a/Lib/pdb.py
+++ b/Lib/pdb.py
@@ -429,8 +429,7 @@ def user_call(self, frame, argument_list):
def user_line(self, frame):
"""This function is called when we stop or break at this line."""
if self._wait_for_mainpyfile:
- if (self.mainpyfile != self.canonic(frame.f_code.co_filename)
- or frame.f_lineno <= 0):
+ if (self.mainpyfile != self.canonic(frame.f_code.co_filename)):
return
self._wait_for_mainpyfile = False
self.bp_commands(frame)
diff --git a/Lib/test/test_pdb.py b/Lib/test/test_pdb.py
index 3dc65fdfc03409..474d31f1ae03d9 100644
--- a/Lib/test/test_pdb.py
+++ b/Lib/test/test_pdb.py
@@ -3999,6 +3999,16 @@ def _create_fake_frozen_module():
# verify that pdb found the source of the "frozen" function
self.assertIn('x = "Sentinel string for gh-93696"', stdout, "Sentinel
statement not found")
+ def test_empty_file(self):
+ script = ''
+ commands = 'q\n'
+ # We check that pdb stopped at line 0, but anything reasonable
+ # is acceptable here, as long as it does not halt
+ stdout, _ = self.run_pdb_script(script, commands)
+ self.assertIn('main.py(0)', stdout)
+ stdout, _ = self.run_pdb_module(script, commands)
+ self.assertIn('__main__.py(0)', stdout)
+
def test_non_utf8_encoding(self):
script_dir = os.path.join(os.path.dirname(__file__), 'encoded_modules')
for filename in os.listdir(script_dir):
diff --git
a/Misc/NEWS.d/next/Library/2024-10-14-02-27-03.gh-issue-100141.NuAcwa.rst
b/Misc/NEWS.d/next/Library/2024-10-14-02-27-03.gh-issue-100141.NuAcwa.rst
new file mode 100644
index 00000000000000..c366b0ad4040d3
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-10-14-02-27-03.gh-issue-100141.NuAcwa.rst
@@ -0,0 +1 @@
+Fixed the bug where :mod:`pdb` will be stuck in an infinite loop when
debugging an empty file.
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