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py3: suppress unraisable exceptions in test-worker.t
Python 3.8 calls sys.unraisablehook when an unraisable
exception is encountered. The default behavior is to print a
warning.
test-worker.t was triggering this hook due to a race between
a newly forked process exiting and that process's
_os.register_at_fork handlers running. I was seeing the
stdlib's random module in the stack re-seeding itself. Although
there could be other after-fork handlers in the mix.
This commit defines sys.unraisablehook to effectively no-op.
This suppresses the warning and makes test output on Python 3.8
consistent with prior versions. test-worker.t now passes on
Python 3.8.
Differential Revision: https://phab.mercurial-scm.org/D7949
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Sat, 18 Jan 2020 11:13:01 -0800 |
parents | 1b59287a1cfa |
children | c5912e35d06d |
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Mercurial ========= Mercurial is a fast, easy to use, distributed revision control tool for software developers. Basic install:: $ make # see install targets $ make install # do a system-wide install $ hg debuginstall # sanity-check setup $ hg # see help Running without installing:: $ make local # build for inplace usage $ ./hg --version # should show the latest version See https://mercurial-scm.org/ for detailed installation instructions, platform-specific notes, and Mercurial user information.