dualfroz a286ef460b Drop event dict keys colliding with LogRecord attributes in render_to_log_* ...

render_to_log_kwargs() and render_to_log_args_and_kwargs() build the
extra kwarg straight out of whatever is left in the event dict once the
event, positional_args, and the exc_info/stack_info/stacklevel trio have
been extracted. If a remaining key happens to share a name with an
attribute that logging.LogRecord already carries (filename, module,
process, message, ...), logging.Logger.makeRecord() rejects the whole
call with a raw KeyError, crashing a documented, non-ProcessorFormatter
configuration on an entirely plausible business field name.

structlog.stdlib.ExtraAdder already filters LogRecord's own attribute
names out of the event dict when merging a record's extra fields in the
other direction. Apply the same filtering here so a colliding key is
dropped from extra instead of reaching logging.Logger.makeRecord() and
crashing it.

Fixes #486.

2026-09-04 08:12:57 +02:00

..

test_stdlib.py

Drop event dict keys colliding with LogRecord attributes in render_to_log_*

2026-09-04 08:12:57 +02:00