Crash report
What happened?
./configure --enable-experimental-jit --with-assertions
make -j$(nproc)
On 3.15.0b4 and main ( 9adef68 ), this results in a _bootstrap_python that crashes on assertions:
$ make
./_bootstrap_python ./Programs/_freeze_module.py abc ./Lib/abc.py Python/frozen_modules/abc.h
_bootstrap_python: Python/pystate.c:925: interpreter_clear: Assertion `cold->vm_data.valid' failed.
make: *** [Makefile:1907: Python/frozen_modules/abc.h] Aborted (core dumped)
make: *** Deleting file 'Python/frozen_modules/abc.h'
For some files, I'm also/instead seeing:
_bootstrap_python: Python/pystate.c:933: interpreter_clear: Assertion `cold_dynamic->vm_data.valid' failed.
Bisect points to 4fa80ce which seems a huge change:
commit 4fa80ce74c6d9f5159bdc5ec3596a194f0391e21
Author: Ken Jin <kenjin@python.org>
AuthorDate: 2025-11-13 19:08:32 +0100
Commit: GitHub <noreply@github.com>
CommitDate: 2025-11-13 19:08:32 +0100
gh-139109: A new tracing JIT compiler frontend for CPython (GH-140310)
CPython versions tested on:
3.15, CPython main branch
Operating systems tested on:
Linux
Output from running 'python -VV' on the command line:
No response