Segmentation faults on Python 3.11.0-alpha.4 with branch coverage enabled #1316
Description
Describe the bug
coverage segfaults with about 50% probability when branch coverage is enabled.
This does not happen on versions below 3.11.
To Reproduce
How can we reproduce the problem? Please be specific. Don't link to a failing CI job. Answer the questions below:
- What version of Python are you using?
3.11.0-alpha.4 - What version of coverage.py shows the problem? The output of
coverage debug sysis helpful.
-- sys -------------------------------------------------------
coverage_version: 6.3
coverage_module: /opt/hostedtoolcache/Python/3.11.0-alpha.4/x64/lib/python3.11/site-packages/coverage/__init__.py
tracer: -none-
CTracer: available
plugins.file_tracers: -none-
plugins.configurers: -none-
plugins.context_switchers: -none-
configs_attempted: .coveragerc
configs_read: /home/runner/work/coverage-segfault/coverage-segfault/.coveragerc
config_file: /home/runner/work/coverage-segfault/coverage-segfault/.coveragerc
config_contents: b'[run]\nbranch = True\n'
data_file: -none-
python: 3.11.0a4 (main, Jan 27 2022, 07:34:27) [GCC 9.3.0]
platform: Linux-5.11.0-1027-azure-x86_64-with-glibc2.31
implementation: CPython
executable: /opt/hostedtoolcache/Python/3.11.0-alpha.4/x64/bin/python
def_encoding: utf-8
fs_encoding: utf-8
pid: 1726
cwd: /home/runner/work/coverage-segfault/coverage-segfault
path: /opt/hostedtoolcache/Python/3.11.0-alpha.4/x64/bin
/opt/hostedtoolcache/Python/3.11.0-alpha.4/x64/lib/python311.zip
/opt/hostedtoolcache/Python/3.11.0-alpha.4/x64/lib/python3.11
/opt/hostedtoolcache/Python/3.11.0-alpha.4/x64/lib/python3.11/lib-dynload
/opt/hostedtoolcache/Python/3.11.0-alpha.4/x64/lib/python3.11/site-packages
environment: HOME = /home/runner
command_line: /opt/hostedtoolcache/Python/3.11.0-alpha.4/x64/bin/coverage debug sys
sqlite3_version: 2.6.0
sqlite3_sqlite_version: 3.31.1
sqlite3_temp_store: 0
sqlite3_compile_options: COMPILER=gcc-9.3.0; ENABLE_COLUMN_METADATA; ENABLE_DBSTAT_VTAB
ENABLE_FTS3; ENABLE_FTS3_PARENTHESIS; ENABLE_FTS3_TOKENIZER
ENABLE_FTS4; ENABLE_FTS5; ENABLE_JSON1
ENABLE_LOAD_EXTENSION; ENABLE_PREUPDATE_HOOK; ENABLE_RTREE
ENABLE_SESSION; ENABLE_STMTVTAB; ENABLE_UNLOCK_NOTIFY
ENABLE_UPDATE_DELETE_LIMIT; HAVE_ISNAN; LIKE_DOESNT_MATCH_BLOBS
MAX_SCHEMA_RETRY=25; MAX_VARIABLE_NUMBER=250000; OMIT_LOOKASIDE
SECURE_DELETE; SOUNDEX; TEMP_STORE=1
THREADSAFE=1; USE_URI
- What versions of what packages do you have installed? The output of
pip freezeis helpful.
coverage==6.3
- What code shows the problem? Give us a specific commit of a specific repo that we can check out. If you've already worked around the problem, please provide a commit before that fix.
https://github.com/Nothing4You/coverage-segfault/tree/f7488a302720dadd7d562f3119e09ed708b2fb44 - What commands did you run?
coverage run test.py
Expected behavior
No segfault.
Additional context
https://github.com/Nothing4You/coverage-segfault/actions/runs/1775511837
https://github.com/Nothing4You/coverage-segfault/blob/f7488a302720dadd7d562f3119e09ed708b2fb44/.github/workflows/ci.yml