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Description
Bug report
Bug description:
Runningbuild.bat --tail-call-interp ... leads to 1 error and 10 warnings about "Modules\socketmodule.c" and "Modules\socketmodule.h".
- The build fails due to 1 error in "Modules\socketmodule.c."
- "\Modules\socketmodule.c" leads to 4
warning : ... is deprecatedstatements. - "\Modules\socketmodule.h" leads to 5
warning : the current #pragma pack alignment value is modified in the included file [-Wpragma-pack] [C:\Users\hunte\AppData\Local\cpython\PCbuild\FILE.vcxproj]statements, where "FILE" is _freeze_module, _socket, or pythoncore. - The build succeeds if in "Modules\socketmodule.c," I change line 3375 from
int dummy;toDWORD dummy;.
Details
- Source files: github/python/cpython/3.14
- Command
build.bat --pgo --tail-call-interp "/p:PlatformToolset=ClangCL" "/p:LLVMInstallDir=%pathCLang%" "/p:LLVMToolsVersion=%LLVMToolsVersion%" "/p:WholeProgramOptimization=true". - Both
build.bat -dandbuild.bat, with the same source files, lead to 1 Warning and 0 Errorsc:\clones\cpython\Modules\unicodedata.c(1478,62): warning C4267: 'function': conversion from 'size_t' to 'int', possible loss of data [c:\clones\cpython\PCbuild\unicodedata.vcxproj]. - In total,
build.bat --tail-call-interp ...leads to 715 warnings and 1 error.- No other errors or warnings refer to a "
*.c" or "*.h" file. - One warning states
C:\Users\hunte\AppData\Local\cpython\PCbuild\pythoncore.vcxproj(720,5): warning : Toolset ClangCL is not used for official builds. Your build may have errors or incompatibilities. - All other warnings state
clang-cl : warning : argument unused during compilation: '/GL' [-Wunused-command-line-argument] [PATHto\cpython\PCbuild\FILE.vcxproj], where "FILE" is one of exactly 45 different names. I think there are 55 "*.vcxproj" files in the directory.
- No other errors or warnings refer to a "
The 1 error and 10 warnings about "Modules\socketmodule.c" and "Modules\socketmodule.h"
..\Modules\socketmodule.c(3377,51): error : incompatible pointer types passing 'int *' to parameter of type 'LPDWORD' (aka 'unsigned long *') [-Wincompatible-pointer-types] [C:\Users\hunte\AppData\Local\cpython\PCbuild\_socket.vcxproj]..\Modules\socketmodule.c(6208,9): warning : 'gethostbyname' is deprecated: Use getaddrinfo() or GetAddrInfoW() instead or define _WINSOCK_DEPRECATED_NO_WARNINGS to disable deprecated API warnings [-Wdeprecated-declarations] [C:\Users\hunte\AppData\Local\cpython\PCbuild\_socket.vcxproj]..\Modules\socketmodule.c(6313,9): warning : 'gethostbyaddr' is deprecated: Use getnameinfo() or GetNameInfoW() instead or define _WINSOCK_DEPRECATED_NO_WARNINGS to disable deprecated API warnings [-Wdeprecated-declarations] [C:\Users\hunte\AppData\Local\cpython\PCbuild\_socket.vcxproj]..\Modules\socketmodule.c(6731,23): warning : 'inet_addr' is deprecated: Use inet_pton() or InetPton() instead or define _WINSOCK_DEPRECATED_NO_WARNINGS to disable deprecated API warnings [-Wdeprecated-declarations] [C:\Users\hunte\AppData\Local\cpython\PCbuild\_socket.vcxproj]..\Modules\socketmodule.c(6775,33): warning : 'inet_ntoa' is deprecated: Use inet_ntop() or InetNtop() instead or define _WINSOCK_DEPRECATED_NO_WARNINGS to disable deprecated API warnings [-Wdeprecated-declarations] [C:\Users\hunte\AppData\Local\cpython\PCbuild\_socket.vcxproj]..\Modules\socketmodule.h(21,11): warning : the current #pragma pack alignment value is modified in the included file [-Wpragma-pack] [C:\Users\hunte\AppData\Local\cpython\PCbuild\_freeze_module.vcxproj]..\Modules\socketmodule.h(21,11): warning : the current #pragma pack alignment value is modified in the included file [-Wpragma-pack] [C:\Users\hunte\AppData\Local\cpython\PCbuild\_socket.vcxproj]..\Modules\socketmodule.h(21,11): warning : the current #pragma pack alignment value is modified in the included file [-Wpragma-pack] [C:\Users\hunte\AppData\Local\cpython\PCbuild\pythoncore.vcxproj]..\Modules\socketmodule.h(53,11): warning : the current #pragma pack alignment value is modified in the included file [-Wpragma-pack] [C:\Users\hunte\AppData\Local\cpython\PCbuild\_freeze_module.vcxproj]..\Modules\socketmodule.h(53,11): warning : the current #pragma pack alignment value is modified in the included file [-Wpragma-pack] [C:\Users\hunte\AppData\Local\cpython\PCbuild\_socket.vcxproj]..\Modules\socketmodule.h(53,11): warning : the current #pragma pack alignment value is modified in the included file [-Wpragma-pack] [C:\Users\hunte\AppData\Local\cpython\PCbuild\pythoncore.vcxproj]Success
- In "Modules\socketmodule.c," I changed line 3375 from
int dummy;toDWORD dummy;. - Rerun the build script.
- 547 Warnings and 0 Errors.
There are a few different file names betweenuniqueWarningsBefore.txt anduniqueWarningsAfter.txt if you think it's important.
Information you can almost certainly ignore.
Environment
Microsoft Windows [Version 10.0.26200.8037]
curl 8.18.0 (Windows) libcurl/8.18.0 Schannel zlib/1.3.1 WinIDN WinLDAP
clang version 22.1.1 (https://github.com/llvm/llvm-project fef02d48c08db859ef83f84232ed78bd9d1c323a)
Target: x86_64-pc-windows-msvc
Thread model: posix
InstalledDir: C:\clones\clang_msvc\bin
Python 3.14.3 (tags/v3.14.3:323c59a, Feb 3 2026, 16:04:56) [MSC v.1944 64 bit (AMD64)]
My batch files to build and install tail-call-interp
_variables.cmd
SETpath314raw=%LOCALAPPDATA%\cpython
go.cmd
@ECHOOFFCALL C:\apps\Z0Z_\buildPython\_variables.cmd:: LLVM clang versionSETpathCLang=C:\clones\clang_msvcSETURLreleases=https://github.com/llvm/llvm-project/releasesFOR /F"tokens=3"%%GIN ('%pathCLang%\bin\clang.exe --version^|findstr clang')DOSETversionLLVM=%%GFOR /F"delims="%%GIN ('curl -L -s -oNUL -w"%%{url_effective}""%URLreleases%/latest"')DOSETURLlatest=%%GFOR /F"tokens=7 delims=/"%%GIN ("%URLlatest%")DOSETLLVMdirectory=%%GSET"versionLLVMlatest=%LLVMdirectory:llvmorg-=%"IFNOT"%versionLLVM%"=="%versionLLVMlatest%" (IFNOTEXIST%pathCLang%MKDIR%pathCLang%SETpathRelativeLLVM=clang+llvm-%versionLLVMlatest%-x86_64-pc-windows-msvcSETfilename_tar=%pathRelativeLLVM%.tarSETfilename_xz=%filename_tar%.xzcurl -L"%URLreleases%/download/%LLVMdirectory%/%filename_xz%" -o"%pathCLang%\%filename_xz%"CALL 7z x -aoa"-o%pathCLang%""%pathCLang%\%filename_xz%"CALL 7z x -aoa"-o%pathCLang%""%pathCLang%\%filename_tar%""%pathRelativeLLVM%\*"ROBOCOPY%pathCLang%\%pathRelativeLLVM%%pathCLang% /MOVE /E /NJH /NDL /NFLDEL%pathCLang%\%filename_tar%DEL%pathCLang%\%filename_xz%)%pathCLang%\bin\clang.exe --version:: github/python/cpython/3.14 syncPUSHd%path314raw%CALL git checkout 3.14CALL git pullPOPd:: PCbuild\build.batPUSHd"%path314raw%\PCbuild"FOR /F"tokens=1 delims=."%%GIN ("%versionLLVMlatest%")DOSETLLVMToolsVersion=%%GCALL build.bat --pgo --tail-call-interp"/p:PlatformToolset=ClangCL""/p:LLVMInstallDir=%pathCLang%"^"/p:LLVMToolsVersion=%LLVMToolsVersion%""/p:WholeProgramOptimization=true"@REM -Wno-unused-command-line-argumentPOPd
regedit_copyFiles.cmd
@ECHOOFFCALL C:\apps\Z0Z_\buildPython\_variables.cmdSETz=zSETpath314zCompiled=%path314raw%\PCbuild\amd64SETpath314zInstalled=%LOCALAPPDATA%\Programs\Python\Python314COPY /Y"%path314zCompiled%\python.exe""%path314zInstalled%\python3.14%z%.exe"COPY /Y"%path314zCompiled%\python.pdb""%path314zInstalled%\python3.14%z%.pdb"COPY /Y"%path314zCompiled%\pythonw.exe""%path314zInstalled%\pythonw3.14%z%.exe"COPY /Y"%path314zCompiled%\pythonw.pdb""%path314zInstalled%\pythonw3.14%z%.pdb"COPY /Y"%path314zCompiled%\python3.*""%path314zInstalled%\python3%z%.*"COPY /Y"%path314zCompiled%\python314.*""%path314zInstalled%\python314%z%.*"MOVE /Y"%path314zInstalled%\*.lib""%path314zInstalled%\libs\""%path314zInstalled%\python3.14%z%.exe" -VVSET"keyRoot=HKCU\Software\Python\PythonCore\3.14%z%"REG ADD"%keyRoot%" /F /T REG_SZ /V DisplayName /D"Python 3.14 (64-bit, tail-call interpreter)"REG ADD"%keyRoot%" /F /T REG_SZ /V SupportUrl /D"https://www.python.org/"REG ADD"%keyRoot%" /F /T REG_SZ /V Version /D"3.14"REG ADD"%keyRoot%" /F /T REG_SZ /V SysVersion /D"3.14"REG ADD"%keyRoot%" /F /T REG_SZ /V SysArchitecture /D"64bit"REG ADD"%keyRoot%\InstallPath" /F /T REG_SZ /VE /D%path314zInstalled%\REG ADD"%keyRoot%\InstallPath" /F /T REG_SZ /V ExecutablePath /D"%path314zInstalled%\python3.14%z%.exe"REG ADD"%keyRoot%\InstallPath" /F /T REG_SZ /V WindowedExecutablePath /D"%path314zInstalled%\pythonw3.14%z%.exe"REG ADD"%keyRoot%\PythonPath" /F /T REG_SZ /VE /D%path314zInstalled%\Lib\;%path314zInstalled%\DLLs\py -0p
45 filenames with warning about unused /GL
_asyncio.vcxproj_bz2.vcxproj_ctypes_test.vcxproj_ctypes.vcxproj_decimal.vcxproj_elementtree.vcxproj_freeze_module.vcxproj_hashlib.vcxproj_lzma.vcxproj_multiprocessing.vcxproj_overlapped.vcxproj_queue.vcxproj_remote_debugging.vcxproj_socket.vcxproj_sqlite3.vcxproj_testbuffer.vcxproj_testcapi.vcxproj_testclinic_limited.vcxproj_testclinic.vcxproj_testconsole.vcxproj_testembed.vcxproj_testimportmultiple.vcxproj_testinternalcapi.vcxproj_testlimitedcapi.vcxproj_testmultiphase.vcxproj_testsinglephase.vcxproj_tkinter.vcxproj_uuid.vcxproj_wmi.vcxproj_zoneinfo.vcxproj_zstd.vcxprojliblzma.vcxprojpyexpat.vcxprojpylauncher.vcxprojpyshellext.vcxprojpython3dll.vcxprojpythoncore.vcxprojpywlauncher.vcxprojselect.vcxprojsqlite3.vcxprojunicodedata.vcxprojvenvlauncher.vcxprojvenvwlauncher.vcxprojwinsound.vcxprojzlib-ng.vcxproj55 "`*.vcxproj`" files in PCBuild directory
_asyncio.vcxproj_bz2.vcxproj_ctypes_test.vcxproj_ctypes.vcxproj_decimal.vcxproj_elementtree.vcxproj_freeze_module.vcxproj_hashlib.vcxproj_lzma.vcxproj_multiprocessing.vcxproj_overlapped.vcxproj_queue.vcxproj_remote_debugging.vcxproj_socket.vcxproj_sqlite3.vcxproj_ssl.vcxproj_testbuffer.vcxproj_testcapi.vcxproj_testclinic_limited.vcxproj_testclinic.vcxproj_testconsole.vcxproj_testembed.vcxproj_testimportmultiple.vcxproj_testinternalcapi.vcxproj_testlimitedcapi.vcxproj_testmultiphase.vcxproj_testsinglephase.vcxproj_tkinter.vcxproj_uuid.vcxproj_wmi.vcxproj_zoneinfo.vcxproj_zstd.vcxprojliblzma.vcxprojopenssl.vcxprojpyexpat.vcxprojpylauncher.vcxprojpyshellext.vcxprojpython_uwp.vcxprojpython.vcxprojpython3dll.vcxprojpythoncore.vcxprojpythonw_uwp.vcxprojpythonw.vcxprojpywlauncher.vcxprojselect.vcxprojsqlite3.vcxprojtcl.vcxprojtk.vcxprojunicodedata.vcxprojvenvlauncher.vcxprojvenvwlauncher.vcxprojwinsound.vcxprojxxlimited_35.vcxprojxxlimited.vcxprojzlib-ng.vcxproj10 files in directory that didn't have unused /GL warning
_ssl.vcxprojopenssl.vcxprojpython_uwp.vcxprojpython.vcxprojpythonw_uwp.vcxprojpythonw.vcxprojtcl.vcxprojtk.vcxprojxxlimited_35.vcxprojxxlimited.vcxprojCPython versions tested on:
3.14
Operating systems tested on:
Windows
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