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Description
Bug report
When using logging.captureWarnings(True), the information about object allocation that you should get with -X tracemalloc gets lost.
It appears to be a discrepancy between Python and C implementation of the warnings module? source isn't passed to the created WarningMessage object in the Lib/warnings.py:
Line 12 in a17cd47
Line 17 in a17cd47
Line 394 in a17cd47
while it is in
Python/_warnings.c:Lines 593 to 605 in a17cd47
Reproduction steps:
- Create a file
repro.pywith contents:
import logging
import tempfile
import warnings
warnings.simplefilter("default", category=ResourceWarning)
logging.basicConfig()
print("--- UNCAPTURED WARNING ---")
file = tempfile.SpooledTemporaryFile(1)
file.write(b"foo")
file = None
print("\n--- CAPTURED WARNING ---")
logging.captureWarnings(True)
file = tempfile.SpooledTemporaryFile(1)
file.write(b"foo")
file = None- Run
python -X tracemalloc=5 - See that output only contains object allocation traceback for uncaptured warning:
--- UNCAPTURED WARNING ---
/tmp/test_tracemallo/repro.py:12: ResourceWarning: unclosed file <_io.BufferedRandom name=3>
file = None
Object allocated at (most recent call last):
File "/tmp/test_tracemallo/repro.py", lineno 11
file.write(b"foo")
File "/usr/lib/python3.10/tempfile.py", lineno 911
self._check(file)
File "/usr/lib/python3.10/tempfile.py", lineno 807
self.rollover()
File "/usr/lib/python3.10/tempfile.py", lineno 812
newfile = self._file = TemporaryFile(**self._TemporaryFileArgs)
File "/usr/lib/python3.10/tempfile.py", lineno 760
return _io.open(fd, mode, buffering=buffering,
--- CAPTURED WARNING ---
WARNING:py.warnings:/tmp/test_tracemallo/repro.py:18: ResourceWarning: unclosed file <_io.BufferedRandom name=3>
file = None
Your environment
- CPython versions tested on: 3.7.13, 3.8.13, 3.9.13 (installed from deadsnakes ppa), 3.10.4 (system Python)
- Operating system and architecture: Ubuntu 22.04
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