Assertion Failure: Deepfrozen code object gets re-quickened #92031
Description
A third bug found while working on #91713 🙃
Bug report
I can reproduce this locally on my Windows machine:
.\python.bat -m test test_embed -m test_finalize_structseq -R1:50
This is the result:
PS C:\Users\sween\Source\Repos\cpython2\cpython> .\python.bat -m test test_embed -m test_finalize_structseq -R1:50
Running Debug|x64 interpreter...
WARNING: Running tests with --huntrleaks/-R and less than 3 warmup repetitions can give false positives!
0:00:00 Run tests sequentially
0:00:00 [1/1] test_embed
beginning 51 repetitions
123456789012345678901234567890123456789012345678901
...................test test_embed failed -- Traceback (most recent call last):
File "C:\Users\sween\Source\Repos\cpython2\cpython\Lib\test\test_embed.py", line 343, in test_finalize_structseq
out, err = self.run_embedded_interpreter("test_repeated_init_exec", code)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\sween\Source\Repos\cpython2\cpython\Lib\test\test_embed.py", line 117, in run_embedded_interpreter
self.assertEqual(p.returncode, returncode,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: 3 != 0 : bad returncode 3, stderr is '--- Loop #1 ---\n..\n----------------------------------------------------------------------\nRan 2 tests in 0.001s\n\nOK\n--- Loop #2 ---\nA\x00s\x00s\x00e\x00r\x00t\x00i\x00o\x00n\x00 \x00f\x00a\x00i\x00l\x00e\x00d\x00:\x00 \x00i\x00n\x00s\x00t\x00r\x00u\x00c\x00t\x00i\x00o\x00n\x00s\x00[\x00i\x00 \x00+\x00 \x001\x00]\x00 \x00=\x00=\x00 \x000\x00,\x00 \x00f\x00i\x00l\x00e\x00 \x00C\x00:\x00\\\x00U\x00s\x00e\x00r\x00s\x00\\\x00s\x00w\x00e\x00e\x00n\x00\\\x00S\x00o\x00u\x00r\x00c\x00e\x00\\\x00R\x00e\x00p\x00o\x00s\x00\\\x00c\x00p\x00y\x00t\x00h\x00o\x00n\x002\x00\\\x00c\x00p\x00y\x00t\x00h\x00o\x00n\x00\\\x00P\x00y\x00t\x00h\x00o\x00n\x00\\\x00s\x00p\x00e\x00c\x00i\x00a\x00l\x00i\x00z\x00e\x00.\x00c\x00,\x00 \x00l\x00i\x00n\x00e\x00 \x002\x006\x006\x00\n\x00'
test_embed failed (1 failure)
== Tests result: FAILURE ==
1 test failed:
test_embed
Total duration: 17.7 sec
Tests result: FAILURE
A more self-contained simplified (less unittest) reproducer is this:
from test import support
import os
import os.path
import subprocess
import sys
MS_WINDOWS = (os.name == 'nt')
MACOS = (sys.platform == 'darwin')
def debug_build(program):
program = os.path.basename(program)
name = os.path.splitext(program)[0]
return name.casefold().endswith("_d".casefold())
exename = "_testembed"
builddir = os.path.dirname(sys.executable)
if MS_WINDOWS:
ext = ("_d" if debug_build(sys.executable) else "") + ".exe"
exename += ext
exepath = builddir
expecteddir = os.path.join(support.REPO_ROOT, builddir)
else:
exepath = os.path.join(builddir, 'Programs')
expecteddir = os.path.join(support.REPO_ROOT, 'Programs')
test_exe = os.path.join(exepath, exename)
###########################################################
os.chdir(support.REPO_ROOT)
code = """if 1:
import unittest
print("Tests passed")
"""
cmd = [test_exe, "test_repeated_init_exec", code]
for i in range(200):
print(i)
p = subprocess.Popen(cmd,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
universal_newlines=True,
env=None,
cwd=None)
(out, err) = p.communicate(input=input, timeout=None)
print(out)
if p.returncode != 0:
print("bad return code", p.returncode)
print(err)
breakThis fails with the following message:
A s s e r t i o n f a i l e d : i n s t r u c t i o n s [ i + 1 ] = = 0 , f i l e C : \ U s e r s \ s w e e n \ S o u r c e \ R e p o s \ c p y t h o n 2 \ c p y t h o n \ P y t h o n \ s p e c i a l i z e . c , l i n e 2 6 6