Assertion failure in build on Windows

Crash report

I get this failure on debug 64-bit build on Windows:

Assertion failed: STACK_LEVEL() >= 1, file D:\py\cpython\Python\ceval.c, line 857

I can't reproduce on my Windows machine -- what exact command did you run to get the Assertion failure?

Today I've hit the same error, and error is gone after git clean -fdx. This obviously related to #114247, I saw the same error message in CI fails on Windows. So, all you need to do - run git clean -fdx and then rebuild the interpreter.

Yeah, this tends to happen when the PYC magic needs to be updated but wasn't. Cleaning up old .pyc files usually fixes it.

I had same failure. Thanks for the fix, which worked for me also. Can this be closed? Does .pyc magic need bumping?

Provided the magic has already been bumped since alpha 3, it doesn't need to be bumped again. Probably need to ask on #114247 though (at least to inform whoever made the change that they missed it, which ought to help them recognise in future when they need to increase the number).

#114247 did bump the magic number

@Eclips4

Huh, that's fun then.

Is it possible that @Eclips4 tested that branch at some point, possibly after the magic number update and before some other opcode changes? I just built before and after that change and didn't see any issue.

@Eclips4

Is it possible that @Eclips4 tested that branch at some point, possibly after the magic number update and before some other opcode changes?

You're right.

@serhiy-storchaka

You're right

Phew, that's a relief. It's a far better explanation than something else going wrong.

If @serhiy-storchaka can confirm the same, I suspect we can close this.

I get this during building

PCbuild\build.bat -e -d -p x64

which prints this on terminal and show pop-up. After closing pop-up, the build is reported as successful, but running python.bat produces the same error.

I tried to clean the build

PCbuild\clean.bat -d -p x64

but it did not help.

I removed all *.pyc files, but it did not help either.

I created a new worktree, and the build was successful there.

Now, I see that PCbuild\clean.bat did not clear PCbuild\amd64 and PCbuild\obj. The remaining files:

Details

D:\PY\CPYTHON\PCBUILD\AMD64
    LICENSE.txt
    pybuilddir.txt
    python313_d.dll.lastcodeanalysissucceeded
    pythonw_uwp_d.exe
    pythonw_uwp_d.ilk
    pythonw_uwp_d.pdb
    python_uwp_d.exe
    python_uwp_d.ilk
    python_uwp_d.pdb
    vcruntime140.dll
    vcruntime140_1.dll
    _freeze_module_d.exe
    _freeze_module_d.ilk
    _freeze_module_d.pdb

Details

D:\PY\CPYTHON\PCBUILD\OBJ
├───313amd64_Debug
│   ├───liblzma
│   │   │   liblzma.log
│   │   │   liblzma_d.Build.CppClean.log
│   │   │   liblzma_d.lib.recipe
│   │   │   
│   │   └───liblzma.tlog
│   ├───pyexpat
│   │   │   pyexpat.log
│   │   │   pyexpat_d.Build.CppClean.log
│   │   │   pyexpat_d.pyd.recipe
│   │   │   
│   │   └───pyexpat.tlog
│   ├───pylauncher
│   │   │   pylauncher.log
│   │   │   py_d.Build.CppClean.log
│   │   │   py_d.exe.recipe
│   │   │   
│   │   └───pylauncher.tlog
│   ├───pyshellext
│   │   │   pyshellext.log
│   │   │   pyshellext_d.Build.CppClean.log
│   │   │   pyshellext_d.dll.recipe
│   │   │   
│   │   └───pyshellext.tlog
│   ├───python
│   │   │   python.log
│   │   │   python_d.Build.CppClean.log
│   │   │   python_d.exe.recipe
│   │   │   
│   │   └───python.tlog
│   ├───python3dll
│   │   │   python3dll.log
│   │   │   python3_d.Build.CppClean.log
│   │   │   python3_d.dll.recipe
│   │   │   
│   │   └───python3dll.tlog
│   ├───pythoncore
│   │   │   CodeAnalysisResultManifest.txt
│   │   │   gitbranch.txt
│   │   │   gittag.txt
│   │   │   gitversion.txt
│   │   │   posixmodule.nativecodeanalysis.sarif
│   │   │   python313_d.Build.CppClean.log
│   │   │   python313_d.dll.recipe
│   │   │   pythoncore.log
│   │   │   
│   │   └───pythoncore.tlog
│   ├───pythonw
│   │   │   pythonw.log
│   │   │   pythonw_d.Build.CppClean.log
│   │   │   pythonw_d.exe.recipe
│   │   │   
│   │   └───pythonw.tlog
│   ├───pythonw_uwp
│   │   │   pythonw_exe.res
│   │   │   pythonw_uwp.log
│   │   │   pythonw_uwp_d.Build.CppClean.log
│   │   │   pythonw_uwp_d.exe.recipe
│   │   │   python_uwp.obj
│   │   │   vc141.pdb
│   │   │   vc143.pdb
│   │   │   
│   │   └───pythonw_uwp.tlog
│   │           CL.command.1.tlog
│   │           Cl.items.tlog
│   │           CL.read.1.tlog
│   │           CL.write.1.tlog
│   │           link.command.1.tlog
│   │           link.read.1.tlog
│   │           link.write.1.tlog
│   │           pythonw_uwp.lastbuildstate
│   │           rc.command.1.tlog
│   │           rc.read.1.tlog
│   │           rc.write.1.tlog
│   │           
│   ├───python_uwp
│   │   │   python_exe.res
│   │   │   python_uwp.log
│   │   │   python_uwp.obj
│   │   │   python_uwp_d.Build.CppClean.log
│   │   │   python_uwp_d.exe.recipe
│   │   │   vc141.pdb
│   │   │   vc143.pdb
│   │   │   
│   │   └───python_uwp.tlog
│   │           CL.command.1.tlog
│   │           Cl.items.tlog
│   │           CL.read.1.tlog
│   │           CL.write.1.tlog
│   │           link.command.1.tlog
│   │           link.read.1.tlog
│   │           link.write.1.tlog
│   │           python_uwp.lastbuildstate
│   │           rc.command.1.tlog
│   │           rc.read.1.tlog
│   │           rc.write.1.tlog
│   │           
│   ├───pywlauncher
│   │   │   pywlauncher.log
│   │   │   pyw_d.Build.CppClean.log
│   │   │   pyw_d.exe.recipe
│   │   │   
│   │   └───pywlauncher.tlog
│   ├───select
│   │   │   select.log
│   │   │   select_d.Build.CppClean.log
│   │   │   select_d.pyd.recipe
│   │   │   
│   │   └───select.tlog
│   ├───sqlite3
│   │   │   sqlite3.log
│   │   │   sqlite3_d.Build.CppClean.log
│   │   │   sqlite3_d.dll.recipe
│   │   │   
│   │   └───sqlite3.tlog
│   ├───unicodedata
│   │   │   unicodedata.log
│   │   │   unicodedata_d.Build.CppClean.log
│   │   │   unicodedata_d.pyd.recipe
│   │   │   
│   │   └───unicodedata.tlog
│   ├───venvlauncher
│   │   │   venvlauncher.log
│   │   │   venvlauncher_d.Build.CppClean.log
│   │   │   venvlauncher_d.exe.recipe
│   │   │   
│   │   └───venvlauncher.tlog
│   ├───venvwlauncher
│   │   │   venvwlauncher.log
│   │   │   venvwlauncher_d.Build.CppClean.log
│   │   │   venvwlauncher_d.exe.recipe
│   │   │   
│   │   └───venvwlauncher.tlog
│   ├───winsound
│   │   │   winsound.log
│   │   │   winsound_d.Build.CppClean.log
│   │   │   winsound_d.pyd.recipe
│   │   │   
│   │   └───winsound.tlog
│   ├───_asyncio
│   │   │   _asyncio.log
│   │   │   _asyncio_d.Build.CppClean.log
│   │   │   _asyncio_d.pyd.recipe
│   │   │   
│   │   └───_asyncio.tlog
│   ├───_bz2
│   │   │   _bz2.log
│   │   │   _bz2_d.Build.CppClean.log
│   │   │   _bz2_d.pyd.recipe
│   │   │   
│   │   └───_bz2.tlog
│   ├───_ctypes
│   │   │   _ctypes.log
│   │   │   _ctypes_d.Build.CppClean.log
│   │   │   _ctypes_d.pyd.recipe
│   │   │   
│   │   └───_ctypes.tlog
│   ├───_ctypes_test
│   │   │   _ctypes_test.log
│   │   │   _ctypes_test_d.Build.CppClean.log
│   │   │   _ctypes_test_d.pyd.recipe
│   │   │   
│   │   └───_ctypes_test.tlog
│   ├───_decimal
│   │   │   _decimal.log
│   │   │   _decimal_d.Build.CppClean.log
│   │   │   _decimal_d.pyd.recipe
│   │   │   
│   │   └───_decimal.tlog
│   ├───_elementtree
│   │   │   _elementtree.log
│   │   │   _elementtree_d.Build.CppClean.log
│   │   │   _elementtree_d.pyd.recipe
│   │   │   
│   │   └───_elementtree.tlog
│   ├───_freeze_module
│   │   │   abc.g.h
│   │   │   abstract.obj
│   │   │   action_helpers.obj
│   │   │   asdl.obj
│   │   │   assemble.obj
│   │   │   ast.obj
│   │   │   ast_opt.obj
│   │   │   ast_unparse.obj
│   │   │   atexitmodule.obj
│   │   │   bltinmodule.obj
│   │   │   boolobject.obj
│   │   │   bootstrap_hash.obj
│   │   │   bufferedio.obj
│   │   │   bytearrayobject.obj
│   │   │   bytesio.obj
│   │   │   bytesobject.obj
│   │   │   bytes_methods.obj
│   │   │   call.obj
│   │   │   capsule.obj
│   │   │   cellobject.obj
│   │   │   ceval.obj
│   │   │   ceval_gil.obj
│   │   │   classobject.obj
│   │   │   codecs.g.h
│   │   │   codecs.obj
│   │   │   codeobject.obj
│   │   │   compile.obj
│   │   │   complexobject.obj
│   │   │   config_minimal.obj
│   │   │   context.obj
│   │   │   descrobject.obj
│   │   │   dictobject.obj
│   │   │   dtoa.obj
│   │   │   dynamic_annotations.obj
│   │   │   dynload_win.obj
│   │   │   enumobject.obj
│   │   │   errors.obj
│   │   │   exceptions.obj
│   │   │   executor.obj
│   │   │   faulthandler.obj
│   │   │   fileio.obj
│   │   │   fileobject.obj
│   │   │   fileutils.obj
│   │   │   floatobject.obj
│   │   │   flowgraph.obj
│   │   │   formatter_unicode.obj
│   │   │   frame.obj
│   │   │   frameobject.obj
│   │   │   frozen_only.g.h
│   │   │   funcobject.obj
│   │   │   future.obj
│   │   │   gcmodule.obj
│   │   │   genericaliasobject.obj
│   │   │   genericpath.g.h
│   │   │   genobject.obj
│   │   │   getargs.obj
│   │   │   getbuildinfo.obj
│   │   │   getcompiler.obj
│   │   │   getcopyright.obj
│   │   │   getopt.obj
│   │   │   getpath.g.h
│   │   │   getpath_noop.obj
│   │   │   getplatform.obj
│   │   │   getversion.obj
│   │   │   hamt.obj
│   │   │   hashtable.obj
│   │   │   import.obj
│   │   │   importdl.obj
│   │   │   importlib.machinery.g.h
│   │   │   importlib.util.g.h
│   │   │   importlib._bootstrap.g.h
│   │   │   importlib._bootstrap_external.g.h
│   │   │   initconfig.obj
│   │   │   instrumentation.obj
│   │   │   interpreteridobject.obj
│   │   │   intrinsics.obj
│   │   │   invalid_parameter_handler.obj
│   │   │   io.g.h
│   │   │   iobase.obj
│   │   │   iterobject.obj
│   │   │   legacy_tracing.obj
│   │   │   listobject.obj
│   │   │   longobject.obj
│   │   │   marshal.obj
│   │   │   memoryobject.obj
│   │   │   methodobject.obj
│   │   │   modsupport.obj
│   │   │   moduleobject.obj
│   │   │   msvcrtmodule.obj
│   │   │   myreadline.obj
│   │   │   mysnprintf.obj
│   │   │   mystrtoul.obj
│   │   │   namespaceobject.obj
│   │   │   ntpath.g.h
│   │   │   object.obj
│   │   │   obmalloc.obj
│   │   │   odictobject.obj
│   │   │   optimizer.obj
│   │   │   os.g.h
│   │   │   parser.obj
│   │   │   pathconfig.obj
│   │   │   pegen.obj
│   │   │   pegen_errors.obj
│   │   │   peg_api.obj
│   │   │   perf_trampoline.obj
│   │   │   picklebufobject.obj
│   │   │   posixmodule.obj
│   │   │   posixpath.g.h
│   │   │   preconfig.obj
│   │   │   pyarena.obj
│   │   │   pyctype.obj
│   │   │   pyfpe.obj
│   │   │   pyhash.obj
│   │   │   pylifecycle.obj
│   │   │   pymath.obj
│   │   │   pystate.obj
│   │   │   pystrcmp.obj
│   │   │   pystrhex.obj
│   │   │   pystrtod.obj
│   │   │   Python-ast.obj
│   │   │   Python-tokenize.obj
│   │   │   pythonrun.obj
│   │   │   pytime.obj
│   │   │   rangeobject.obj
│   │   │   runpy.g.h
│   │   │   setobject.obj
│   │   │   signalmodule.obj
│   │   │   site.g.h
│   │   │   sliceobject.obj
│   │   │   specialize.obj
│   │   │   stat.g.h
│   │   │   stringio.obj
│   │   │   string_parser.obj
│   │   │   structmember.obj
│   │   │   structseq.obj
│   │   │   suggestions.obj
│   │   │   symtable.obj
│   │   │   sysmodule.obj
│   │   │   textio.obj
│   │   │   thread.obj
│   │   │   timemodule.obj
│   │   │   token.obj
│   │   │   tokenizer.obj
│   │   │   traceback.obj
│   │   │   tracemalloc.obj
│   │   │   tupleobject.obj
│   │   │   typeobject.obj
│   │   │   typevarobject.obj
│   │   │   unicodectype.obj
│   │   │   unicodeobject.obj
│   │   │   unionobject.obj
│   │   │   vc141.pdb
│   │   │   vc143.pdb
│   │   │   weakrefobject.obj
│   │   │   winconsoleio.obj
│   │   │   winreg.obj
│   │   │   zipimport.g.h
│   │   │   _collections_abc.g.h
│   │   │   _freeze_module.log
│   │   │   _freeze_module.obj
│   │   │   _freeze_module_d.Build.CppClean.log
│   │   │   _freeze_module_d.exe.recipe
│   │   │   _iomodule.obj
│   │   │   _sitebuiltins.g.h
│   │   │   _tracemalloc.obj
│   │   │   _warnings.obj
│   │   │   __hello__.g.h
│   │   │   __phello__.g.h
│   │   │   __phello__.ham.eggs.g.h
│   │   │   __phello__.ham.g.h
│   │   │   __phello__.spam.g.h
│   │   │   
│   │   └───_freeze_module.tlog
│   │           CL.command.1.tlog
│   │           Cl.items.tlog
│   │           CL.read.1.tlog
│   │           CL.write.1.tlog
│   │           link.command.1.tlog
│   │           link.read.1.tlog
│   │           link.write.1.tlog
│   │           _freeze_module.lastbuildstate
│   │           
│   ├───_hashlib
│   │   │   _hashlib.log
│   │   │   _hashlib_d.Build.CppClean.log
│   │   │   _hashlib_d.pyd.recipe
│   │   │   
│   │   └───_hashlib.tlog
│   ├───_lzma
│   │   │   _lzma.log
│   │   │   _lzma_d.Build.CppClean.log
│   │   │   _lzma_d.pyd.recipe
│   │   │   
│   │   └───_lzma.tlog
│   ├───_multiprocessing
│   │   │   _multiprocessing.log
│   │   │   _multiprocessing_d.Build.CppClean.log
│   │   │   _multiprocessing_d.pyd.recipe
│   │   │   
│   │   └───_multiprocessing.tlog
│   ├───_overlapped
│   │   │   _overlapped.log
│   │   │   _overlapped_d.Build.CppClean.log
│   │   │   _overlapped_d.pyd.recipe
│   │   │   
│   │   └───_overlapped.tlog
│   ├───_queue
│   │   │   _queue.log
│   │   │   _queue_d.Build.CppClean.log
│   │   │   _queue_d.pyd.recipe
│   │   │   
│   │   └───_queue.tlog
│   ├───_socket
│   │   │   _socket.log
│   │   │   _socket_d.Build.CppClean.log
│   │   │   _socket_d.pyd.recipe
│   │   │   
│   │   └───_socket.tlog
│   ├───_sqlite3
│   │   │   _sqlite3.log
│   │   │   _sqlite3_d.Build.CppClean.log
│   │   │   _sqlite3_d.pyd.recipe
│   │   │   
│   │   └───_sqlite3.tlog
│   ├───_ssl
│   │   │   _ssl.log
│   │   │   _ssl_d.Build.CppClean.log
│   │   │   _ssl_d.pyd.recipe
│   │   │   
│   │   └───_ssl.tlog
│   ├───_testbuffer
│   │   │   _testbuffer.log
│   │   │   _testbuffer_d.Build.CppClean.log
│   │   │   _testbuffer_d.pyd.recipe
│   │   │   
│   │   └───_testbuffer.tlog
│   ├───_testcapi
│   │   │   _testcapi.log
│   │   │   _testcapi_d.Build.CppClean.log
│   │   │   _testcapi_d.pyd.recipe
│   │   │   
│   │   └───_testcapi.tlog
│   ├───_testclinic
│   │   │   _testclinic.log
│   │   │   _testclinic_d.Build.CppClean.log
│   │   │   _testclinic_d.pyd.recipe
│   │   │   
│   │   └───_testclinic.tlog
│   ├───_testclinic_limited
│   │   │   _testclinic_limited_d.Build.CppClean.log
│   │   │   _testclinic_limited_d.pyd.recipe
│   │   │   
│   │   └───_testcli.01FDF29A.tlog
│   ├───_testconsole
│   │   │   _testconsole.log
│   │   │   _testconsole_d.Build.CppClean.log
│   │   │   _testconsole_d.pyd.recipe
│   │   │   
│   │   └───_testconsole.tlog
│   ├───_testembed
│   │   │   _testembed.log
│   │   │   _testembed_d.Build.CppClean.log
│   │   │   _testembed_d.exe.recipe
│   │   │   
│   │   └───_testembed.tlog
│   ├───_testimportmultiple
│   │   │   _testimportmultiple.log
│   │   │   _testimportmultiple_d.Build.CppClean.log
│   │   │   _testimportmultiple_d.pyd.recipe
│   │   │   
│   │   └───_testimp.36D0C52C.tlog
│   ├───_testinternalcapi
│   │   │   _testinternalcapi.log
│   │   │   _testinternalcapi_d.Build.CppClean.log
│   │   │   _testinternalcapi_d.pyd.recipe
│   │   │   
│   │   └───_testint.900342D7.tlog
│   ├───_testmultiphase
│   │   │   _testmultiphase.log
│   │   │   _testmultiphase_d.Build.CppClean.log
│   │   │   _testmultiphase_d.pyd.recipe
│   │   │   
│   │   └───_testmultiphase.tlog
│   ├───_testsinglephase
│   │   │   _testsinglephase.log
│   │   │   _testsinglephase_d.Build.CppClean.log
│   │   │   _testsinglephase_d.pyd.recipe
│   │   │   
│   │   └───_testsinglephase.tlog
│   ├───_tkinter
│   │   │   _tkinter.log
│   │   │   _tkinter_d.Build.CppClean.log
│   │   │   _tkinter_d.pyd.recipe
│   │   │   
│   │   └───_tkinter.tlog
│   ├───_uuid
│   │   │   _uuid.log
│   │   │   _uuid_d.Build.CppClean.log
│   │   │   _uuid_d.pyd.recipe
│   │   │   
│   │   └───_uuid.tlog
│   ├───_wmi
│   │   │   _wmi.log
│   │   │   _wmi_d.Build.CppClean.log
│   │   │   _wmi_d.pyd.recipe
│   │   │   
│   │   └───_wmi.tlog
│   └───_zoneinfo
│       │   _zoneinfo.log
│       │   _zoneinfo_d.Build.CppClean.log
│       │   _zoneinfo_d.pyd.recipe
│       │   
│       └───_zoneinfo.tlog
├───313win32_Debug
│   └───_freeze_module
│       │   deepfreeze_mappings.txt
│       │   pyconfig.h
│       │   _freeze_module_d.Build.CppClean.log
│       │   _freeze_module_d.exe.recipe
│       │   
│       └───_freeze_module.tlog
└───313_frozen
    └───Python
        └───frozen_modules

Looks like you're getting x64 _freeze_module when it should be x86 by default, and if that's not rebuilding properly then you'll keep generating invalid bytecode from a previous build. I'm not sure how that would happen or how to reproduce it, but I can take a look through the cleanup code in case something jumps out.

If you have any ideas for anything else you might've done that's unusual, it might help. BTW, -e -p x64 are the default options for build.bat, so you only need to pass -d.

I did not do anything unusual. Few weeks ago I build it successfully, and now I just updated sources from GitHub and rebuild.

There was definitely a recent anomaly. I have recompiled every few days for a year and a half (and a couple of days ago) without any problem.

Is this still happening?

It was a single case. It is obvious that there is (was) a bug in the cleaning and rebuilding scripts, but the failure happens in rare circumstances, and it is not common for the workflow of other developers or bots.

I am closing this issue. If it will became enough reproducible and annoying, we can open a new issue. I cannot provide much useful info.

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Assertion failure in build on Windows #114547

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Assertion failure in build on Windows #114547

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AlexWaygood commented on Jan 25, 2024

Eclips4 commented on Jan 25, 2024

zooba commented on Jan 25, 2024

terryjreedy commented on Jan 25, 2024

zooba commented on Jan 25, 2024

AlexWaygood commented on Jan 25, 2024

zooba commented on Jan 25, 2024

Eclips4 commented on Jan 25, 2024

zooba commented on Jan 25, 2024

serhiy-storchaka commented on Jan 25, 2024

zooba commented on Jan 25, 2024

serhiy-storchaka commented on Jan 26, 2024

terryjreedy commented on Jan 27, 2024

Eclips4 commented on Sep 23, 2024

serhiy-storchaka commented on Sep 23, 2024

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