GH-95736: fix IsolatedAsyncioTestCase to set event loop before calling setup functions

[kumaraditya303]

• Issue: IsolatedAsyncioTestCase does not call asyncio.set_event_loop before setUp anymore, asyncio.Runner+PidFdChildWatcher leaves zombie processes #95736

[gvanrossum]

This is waiting for a resolution of #95900 (comment).

[gvanrossum]

Okay this is what I had in mind so LGTM from that perspective, but we need to get a better understanding of what Thomas is asking about the event loop policy.

[gvanrossum]

So we've established that in tests deriving from IsolatedAsyncioTestCase, the runner isn't fully initialized yet when setUp is called. (The issue should have that in its topic or at least in the body of the first comment.)

It makes me wonder if the Runner class shouldn't initialize itself eagerly (rather than lazily), but that's way too big a change for 3.11 and there's probably a good reason -- though we've now seen it also causes problems.

@kumaraditya303 Can you shorten the test per my remarks previously in this issue?

I'd also like to invite @serhiy-storchaka to review this, since he did some work on async_case.py just 3 months ago.

[serhiy-storchaka]

In general the solution LGTM, but I have a lot of questions about testing code.

[kumaraditya303]

Can you shorten the test per my remarks previously in this issue?

Done, FTR the previous test was mostly copied from #95736

[serhiy-storchaka]

LGTM.

[miss-islington]

Thanks @kumaraditya303 for the PR, and @gvanrossum for merging it 🌮🎉.. I'm working now to backport this PR to: 3.11.
🐍🍒⛏🤖

[bedevere-bot]

GH-96027 is a backport of this pull request to the 3.11 branch.

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot wasm32-emscripten node (dynamic linking) 3.x has failed when building commit 9d51599.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/1056/builds/311) and take a look at the build logs.
4. Check if the failure is related to this commit (9d51599) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/1056/builds/311

Failed tests:

• test_os

Summary of the results of the build (if available):

== Tests result: FAILURE ==

338 tests OK.

10 slowest tests:

• test_tokenize: 1 min 11 sec
• test_unparse: 49.4 sec
• test_lib2to3: 44.3 sec
• test_capi: 24.7 sec
• test_unicodedata: 21.8 sec
• test_argparse: 20.1 sec
• test_pickle: 17.6 sec
• test_statistics: 16.1 sec
• test_zipfile: 13.0 sec
• test_decimal: 11.6 sec

1 test failed:
test_os

96 tests skipped:
test__xxsubinterpreters test_asyncgen test_asynchat test_asyncio
test_asyncore test_check_c_globals test_clinic test_cmd_line
test_concurrent_futures test_contextlib_async test_ctypes
test_curses test_dbm_gnu test_dbm_ndbm test_devpoll test_doctest
test_docxmlrpc test_dtrace test_embed test_epoll test_faulthandler
test_fcntl test_file_eintr test_fork1 test_ftplib test_gdb
test_grp test_httplib test_httpservers test_idle test_imaplib
test_interpreters test_ioctl test_kqueue test_launcher test_lzma
test_mmap test_msilib test_multiprocessing_fork
test_multiprocessing_forkserver test_multiprocessing_main_handling
test_multiprocessing_spawn test_nis test_openpty test_ossaudiodev
test_pdb test_poll test_poplib test_pty test_pwd test_queue
test_readline test_regrtest test_repl test_select test_selectors
test_smtplib test_smtpnet test_socket test_socketserver test_spwd
test_ssl test_stable_abi_ctypes test_startfile test_subprocess
test_sys_settrace test_syslog test_tcl test_telnetlib test_thread
test_threadedtempfile test_threading test_threading_local test_tix
test_tkinter test_tools test_ttk test_ttk_textonly test_turtle
test_urllib2 test_urllib2_localnet test_urllib2net test_urllibnet
test_venv test_wait3 test_wait4 test_webbrowser test_winconsoleio
test_winreg test_winsound test_wsgiref test_xmlrpc test_xmlrpc_net
test_zipfile64 test_zipimport_support test_zoneinfo
0:21:42 load avg: 10.79
0:21:42 load avg: 10.79 Re-running failed tests is not supported with --python host runner option.

Total duration: 21 min 42 sec

Click to see traceback logs

remote: Enumerating objects: 24, done. remote: Counting objects: 4% (1/24) remote: Counting objects: 8% (2/24) remote: Counting objects: 12% (3/24) remote: Counting objects: 16% (4/24) remote: Counting objects: 20% (5/24) remote: Counting objects: 25% (6/24) remote: Counting objects: 29% (7/24) remote: Counting objects: 33% (8/24) remote: Counting objects: 37% (9/24) remote: Counting objects: 41% (10/24) remote: Counting objects: 45% (11/24) remote: Counting objects: 50% (12/24) remote: Counting objects: 54% (13/24) remote: Counting objects: 58% (14/24) remote: Counting objects: 62% (15/24) remote: Counting objects: 66% (16/24) remote: Counting objects: 70% (17/24) remote: Counting objects: 75% (18/24) remote: Counting objects: 79% (19/24) remote: Counting objects: 83% (20/24) remote: Counting objects: 87% (21/24) remote: Counting objects: 91% (22/24) remote: Counting objects: 95% (23/24) remote: Counting objects: 100% (24/24) remote: Counting objects: 100% (24/24), done. remote: Compressing objects: 8% (1/12) remote: Compressing objects: 16% (2/12) remote: Compressing objects: 25% (3/12) remote: Compressing objects: 33% (4/12) remote: Compressing objects: 41% (5/12) remote: Compressing objects: 50% (6/12) remote: Compressing objects: 58% (7/12) remote: Compressing objects: 66% (8/12) remote: Compressing objects: 75% (9/12) remote: Compressing objects: 83% (10/12) remote: Compressing objects: 91% (11/12) remote: Compressing objects: 100% (12/12) remote: Compressing objects: 100% (12/12), done. remote: Total 13 (delta 11), reused 2 (delta 1), pack-reused 0 
From https://github.com/python/cpython
* branch main -> FETCH_HEAD
Note: switching to '9d515997f943b7b510268448f372dabcbf957858'.
You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by switching back to a branch.
If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -c with the switch command. Example:
git switch -c <new-branch-name>
Or undo this operation with:
git switch -
Turn off this advice by setting config variable advice.detachedHead to false
HEAD is now at 9d515997f9 GH-95736: fix IsolatedAsyncioTestCase to initialize Runner before calling setup functions (#95898)
Switched to and reset branch 'main'
../../Objects/obmalloc.c:1450:1: warning: always_inline function might not be inlinable [-Wattributes]
1450 | arena_map_get(block *p, int create)
|^~~~~~~~~~~~~../../Modules/_testcapi/heaptype.c: In function ‘test_type_from_ephemeral_spec’:
../../Modules/_testcapi/heaptype.c:280:23: warning: unused variable ‘class_ht’ [-Wunused-variable]
280 | PyHeapTypeObject *class_ht = (PyHeapTypeObject *)class;
|^~~~~~~~
../../Modules/_testcapi/heaptype.c:279:19: warning: unused variable ‘class_tp’ [-Wunused-variable]
279 | PyTypeObject *class_tp = (PyTypeObject *)class;
|^~~~~~~~configure: ../../configure --prefix $(PWD)/target/host --with-pydebug --without-pydebug --with-emscripten-target=node --enable-wasm-dynamic-linking --disable-wasm-pthreads --build=x86_64-pc-linux-gnu --host=wasm32-unknown-emscripten --with-build-python=../build/pythonconfigure: WARNING: using cross tools not prefixed with host tripletmcc: error: no input filesmake: make -j2 all
../../Objects/typeobject.c:74:1: warning: unused function 'static_builtin_index_is_set' [-Wunused-function]
static_builtin_index_is_set(PyTypeObject *self)
^
1 warning generated.
../../Python/initconfig.c:2236:27: warning: format specifies type 'wint_t' (aka 'int') but the argument has type 'wint_t' (aka 'unsigned int') [-Wformat]
printf(usage_envvars, (wint_t)DELIM, (wint_t)DELIM, PYTHONHOMEHELP);~~~~~~~~~~~~~^~~~~~~~~~~~~
../../Python/initconfig.c:128:18: note: format string is defined here
"PYTHONPATH : '%lc'-separated list of directories prefixed to the\n"
^~~%c
../../Python/initconfig.c:2236:42: warning: format specifies type 'wint_t' (aka 'int') but the argument has type 'wint_t' (aka 'unsigned int') [-Wformat]
printf(usage_envvars, (wint_t)DELIM, (wint_t)DELIM, PYTHONHOMEHELP);~~~~~~~~~~~~~^~~~~~~~~~~~~
../../Python/initconfig.c:131:58: note: format string is defined here
"PYTHONHOME : alternate <prefix> directory (or <prefix>%lc<exec_prefix>).\n"
^~~%c
2 warnings generated.
../../Python/pytime.c:297:10: warning: implicit conversion from 'long long' to 'double' changes value from 9223372036854775807 to 9223372036854775808 [-Wimplicit-const-int-float-conversion]
if (!_Py_InIntegralTypeRange(time_t, intpart)) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../Include/internal/pycore_pymath.h:72:45: note: expanded from macro '_Py_InIntegralTypeRange'
(_Py_IntegralTypeMin(type) <= v && v <= _Py_IntegralTypeMax(type))
~~^~~~~~~~~~~~~~~~~~~~~~~~~
../../Include/internal/pycore_pymath.h:61:88: note: expanded from macro '_Py_IntegralTypeMax'
(_Py_IS_TYPE_SIGNED(type) ? (((((type)1<< (sizeof(type)*CHAR_BIT-2)) -1) <<1) +1) : ~(type)0)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
../../Python/pytime.c:352:14: warning: implicit conversion from 'long long' to 'double' changes value from 9223372036854775807 to 9223372036854775808 [-Wimplicit-const-int-float-conversion]
if (!_Py_InIntegralTypeRange(time_t, intpart)) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../Include/internal/pycore_pymath.h:72:45: note: expanded from macro '_Py_InIntegralTypeRange'
(_Py_IntegralTypeMin(type) <= v && v <= _Py_IntegralTypeMax(type))
~~^~~~~~~~~~~~~~~~~~~~~~~~~
../../Include/internal/pycore_pymath.h:61:88: note: expanded from macro '_Py_IntegralTypeMax'
(_Py_IS_TYPE_SIGNED(type) ? (((((type)1<< (sizeof(type)*CHAR_BIT-2)) -1) <<1) +1) : ~(type)0)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
../../Python/pytime.c:518:10: warning: implicit conversion from 'long long' to 'double' changes value from 9223372036854775807 to 9223372036854775808 [-Wimplicit-const-int-float-conversion]
if (!_Py_InIntegralTypeRange(_PyTime_t, d)) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../Include/internal/pycore_pymath.h:72:45: note: expanded from macro '_Py_InIntegralTypeRange'
(_Py_IntegralTypeMin(type) <= v && v <= _Py_IntegralTypeMax(type))
~~^~~~~~~~~~~~~~~~~~~~~~~~~
../../Include/internal/pycore_pymath.h:61:88: note: expanded from macro '_Py_IntegralTypeMax'
(_Py_IS_TYPE_SIGNED(type) ? (((((type)1<< (sizeof(type)*CHAR_BIT-2)) -1) <<1) +1) : ~(type)0)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
3 warnings generated.
../../Modules/expat/xmlparse.c:3107:9: warning: code will never be executed [-Wunreachable-code]
parser->m_characterDataHandler(parser->m_handlerArg, parser->m_dataBuf,
^~~~~~
../../Modules/expat/xmlparse.c:3106:16: note: silence by adding parentheses to mark code as explicitly dead
elseif (0&& parser->m_characterDataHandler)
^/*DISABLESCODE*/ ( )
../../Modules/expat/xmlparse.c:4050:9: warning: code will never be executed [-Wunreachable-code]
parser->m_characterDataHandler(parser->m_handlerArg, parser->m_dataBuf,
^~~~~~
../../Modules/expat/xmlparse.c:4049:16: note: silence by adding parentheses to mark code as explicitly dead
elseif (0&& parser->m_characterDataHandler)
^/*DISABLESCODE*/ ( )
../../Modules/expat/xmlparse.c:7681:11: warning: format specifies type 'int' but the argument has type 'ptrdiff_t' (aka 'long') [-Wformat]
bytesMore, (account ==XML_ACCOUNT_DIRECT) ?"DIR" : "EXP",
^~~~~~~~~
3 warnings generated.
../../Modules/socketmodule.c:4027:33: warning: comparison of integers of different signs: 'unsigned long' and 'long' [-Wsign-compare]
cmsgh !=NULL; cmsgh = CMSG_NXTHDR(&msg, cmsgh)) {
^~~~~~~~~~~~~~~~~~~~~~~~
/opt/buildbot/.emscripten_cache/sysroot/include/sys/socket.h:356:44: note: expanded from macro 'CMSG_NXTHDR'
__CMSG_LEN(cmsg) + sizeof(struct cmsghdr) >= __MHDR_END(mhdr) - (unsigned char *)(cmsg) \
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../Modules/socketmodule.c:4080:33: warning: comparison of integers of different signs: 'unsigned long' and 'long' [-Wsign-compare]
cmsgh !=NULL; cmsgh = CMSG_NXTHDR(&msg, cmsgh)) {
^~~~~~~~~~~~~~~~~~~~~~~~
/opt/buildbot/.emscripten_cache/sysroot/include/sys/socket.h:356:44: note: expanded from macro 'CMSG_NXTHDR'
__CMSG_LEN(cmsg) + sizeof(struct cmsghdr) >= __MHDR_END(mhdr) - (unsigned char *)(cmsg) \
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../Modules/socketmodule.c:4706:54: warning: comparison of integers of different signs: 'unsigned long' and 'long' [-Wsign-compare]
cmsgh = (i ==0) ? CMSG_FIRSTHDR(&msg) : CMSG_NXTHDR(&msg, cmsgh);^~~~~~~~~~~~~~~~~~~~~~~~
/opt/buildbot/.emscripten_cache/sysroot/include/sys/socket.h:356:44: note: expanded from macro 'CMSG_NXTHDR'
__CMSG_LEN(cmsg) + sizeof(struct cmsghdr) >= __MHDR_END(mhdr) - (unsigned char *)(cmsg) \
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3 warnings generated.
../../Modules/_sqlite/connection.c:2125:19: warning: result of comparison of constant 9223372036854775807 with expression of type 'Py_ssize_t' (aka 'long') is always false [-Wtautological-constant-out-of-range-compare]
if (data->len>9223372036854775807) { // (1<<63) -1~~~~~~~~~^~~~~~~~~~~~~~~~~~~~
1 warning generated.
../../Modules/_testcapi/heaptype.c:279:19: warning: unused variable 'class_tp' [-Wunused-variable]
PyTypeObject *class_tp = (PyTypeObject *)class;^
../../Modules/_testcapi/heaptype.c:280:23: warning: unused variable 'class_ht' [-Wunused-variable]
PyHeapTypeObject *class_ht = (PyHeapTypeObject *)class;^
2 warnings generated.
make: *** [Makefile:1806: buildbottest] Error 2
Cannot open file '/opt/buildbot/bcannon-wasm/3.x.bcannon-wasm.emscripten-node-dl/build/build/build_oot/host/test-results.xml' for upload

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot wasm32-emscripten node (pthreads) 3.x has failed when building commit 9d51599.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/1050/builds/314) and take a look at the build logs.
4. Check if the failure is related to this commit (9d51599) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/1050/builds/314

Failed tests:

• test_os

Summary of the results of the build (if available):

== Tests result: FAILURE ==

342 tests OK.

10 slowest tests:

• test_tokenize: 1 min 20 sec
• test_unparse: 50.8 sec
• test_lib2to3: 49.4 sec
• test_capi: 35.1 sec
• test_io: 31.0 sec
• test_zipfile: 27.5 sec
• test_unicodedata: 26.3 sec
• test_pickle: 20.0 sec
• test_statistics: 16.4 sec
• test_decimal: 15.3 sec

1 test failed:
test_os

92 tests skipped:
test__xxsubinterpreters test_asyncgen test_asynchat test_asyncio
test_asyncore test_check_c_globals test_clinic test_cmd_line
test_concurrent_futures test_contextlib_async test_ctypes
test_curses test_dbm_gnu test_dbm_ndbm test_devpoll test_doctest
test_docxmlrpc test_dtrace test_embed test_epoll test_faulthandler
test_fcntl test_file_eintr test_fork1 test_ftplib test_gdb
test_grp test_httplib test_httpservers test_idle test_imaplib
test_interpreters test_ioctl test_kqueue test_launcher test_lzma
test_mmap test_msilib test_multiprocessing_fork
test_multiprocessing_forkserver test_multiprocessing_main_handling
test_multiprocessing_spawn test_nis test_openpty test_ossaudiodev
test_pdb test_poll test_poplib test_pty test_pwd test_readline
test_regrtest test_repl test_select test_selectors test_smtplib
test_smtpnet test_socket test_socketserver test_spwd test_ssl
test_stable_abi_ctypes test_startfile test_subprocess
test_sys_settrace test_syslog test_tcl test_telnetlib test_tix
test_tkinter test_tools test_ttk test_ttk_textonly test_turtle
test_urllib2 test_urllib2_localnet test_urllib2net test_urllibnet
test_venv test_wait3 test_wait4 test_webbrowser test_winconsoleio
test_winreg test_winsound test_wsgiref test_xmlrpc test_xmlrpc_net
test_xxlimited test_zipfile64 test_zipimport_support test_zoneinfo
0:21:29 load avg: 8.72
0:21:29 load avg: 8.72 Re-running failed tests is not supported with --python host runner option.

Total duration: 21 min 29 sec

Click to see traceback logs

remote: Enumerating objects: 30, done. remote: Counting objects: 3% (1/30) remote: Counting objects: 6% (2/30) remote: Counting objects: 10% (3/30) remote: Counting objects: 13% (4/30) remote: Counting objects: 16% (5/30) remote: Counting objects: 20% (6/30) remote: Counting objects: 23% (7/30) remote: Counting objects: 26% (8/30) remote: Counting objects: 30% (9/30) remote: Counting objects: 33% (10/30) remote: Counting objects: 36% (11/30) remote: Counting objects: 40% (12/30) remote: Counting objects: 43% (13/30) remote: Counting objects: 46% (14/30) remote: Counting objects: 50% (15/30) remote: Counting objects: 53% (16/30) remote: Counting objects: 56% (17/30) remote: Counting objects: 60% (18/30) remote: Counting objects: 63% (19/30) remote: Counting objects: 66% (20/30) remote: Counting objects: 70% (21/30) remote: Counting objects: 73% (22/30) remote: Counting objects: 76% (23/30) remote: Counting objects: 80% (24/30) remote: Counting objects: 83% (25/30) remote: Counting objects: 86% (26/30) remote: Counting objects: 90% (27/30) remote: Counting objects: 93% (28/30) remote: Counting objects: 96% (29/30) remote: Counting objects: 100% (30/30) remote: Counting objects: 100% (30/30), done. remote: Compressing objects: 6% (1/16) remote: Compressing objects: 12% (2/16) remote: Compressing objects: 18% (3/16) remote: Compressing objects: 25% (4/16) remote: Compressing objects: 31% (5/16) remote: Compressing objects: 37% (6/16) remote: Compressing objects: 43% (7/16) remote: Compressing objects: 50% (8/16) remote: Compressing objects: 56% (9/16) remote: Compressing objects: 62% (10/16) remote: Compressing objects: 68% (11/16) remote: Compressing objects: 75% (12/16) remote: Compressing objects: 81% (13/16) remote: Compressing objects: 87% (14/16) remote: Compressing objects: 93% (15/16) remote: Compressing objects: 100% (16/16) remote: Compressing objects: 100% (16/16), done. remote: Total 18 (delta 15), reused 3 (delta 2), pack-reused 0 
From https://github.com/python/cpython
* branch main -> FETCH_HEAD
Note: switching to '9d515997f943b7b510268448f372dabcbf957858'.
You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by switching back to a branch.
If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -c with the switch command. Example:
git switch -c <new-branch-name>
Or undo this operation with:
git switch -
Turn off this advice by setting config variable advice.detachedHead to false
HEAD is now at 9d515997f9 GH-95736: fix IsolatedAsyncioTestCase to initialize Runner before calling setup functions (#95898)
Switched to and reset branch 'main'
../../Objects/obmalloc.c:1450:1: warning: always_inline function might not be inlinable [-Wattributes]
1450 | arena_map_get(block *p, int create)
|^~~~~~~~~~~~~../../Modules/_testcapi/heaptype.c: In function ‘test_type_from_ephemeral_spec’:
../../Modules/_testcapi/heaptype.c:280:23: warning: unused variable ‘class_ht’ [-Wunused-variable]
280 | PyHeapTypeObject *class_ht = (PyHeapTypeObject *)class;
|^~~~~~~~
../../Modules/_testcapi/heaptype.c:279:19: warning: unused variable ‘class_tp’ [-Wunused-variable]
279 | PyTypeObject *class_tp = (PyTypeObject *)class;
|^~~~~~~~configure: ../../configure --prefix $(PWD)/target/host --with-pydebug --without-pydebug --with-emscripten-target=node --disable-wasm-dynamic-linking --enable-wasm-pthreads --build=x86_64-pc-linux-gnu --host=wasm32-unknown-emscripten --with-build-python=../build/pythonconfigure: WARNING: using cross tools not prefixed with host tripletmcc: error: no input filesmake: make -j2 all
../../Objects/typeobject.c:74:1: warning: unused function 'static_builtin_index_is_set' [-Wunused-function]
static_builtin_index_is_set(PyTypeObject *self)
^
1 warning generated.
../../Python/initconfig.c:2236:27: warning: format specifies type 'wint_t' (aka 'int') but the argument has type 'wint_t' (aka 'unsigned int') [-Wformat]
printf(usage_envvars, (wint_t)DELIM, (wint_t)DELIM, PYTHONHOMEHELP);~~~~~~~~~~~~~^~~~~~~~~~~~~
../../Python/initconfig.c:128:18: note: format string is defined here
"PYTHONPATH : '%lc'-separated list of directories prefixed to the\n"
^~~%c
../../Python/initconfig.c:2236:42: warning: format specifies type 'wint_t' (aka 'int') but the argument has type 'wint_t' (aka 'unsigned int') [-Wformat]
printf(usage_envvars, (wint_t)DELIM, (wint_t)DELIM, PYTHONHOMEHELP);~~~~~~~~~~~~~^~~~~~~~~~~~~
../../Python/initconfig.c:131:58: note: format string is defined here
"PYTHONHOME : alternate <prefix> directory (or <prefix>%lc<exec_prefix>).\n"
^~~%c
2 warnings generated.
../../Python/pytime.c:297:10: warning: implicit conversion from 'long long' to 'double' changes value from 9223372036854775807 to 9223372036854775808 [-Wimplicit-const-int-float-conversion]
if (!_Py_InIntegralTypeRange(time_t, intpart)) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../Include/internal/pycore_pymath.h:72:45: note: expanded from macro '_Py_InIntegralTypeRange'
(_Py_IntegralTypeMin(type) <= v && v <= _Py_IntegralTypeMax(type))
~~^~~~~~~~~~~~~~~~~~~~~~~~~
../../Include/internal/pycore_pymath.h:61:88: note: expanded from macro '_Py_IntegralTypeMax'
(_Py_IS_TYPE_SIGNED(type) ? (((((type)1<< (sizeof(type)*CHAR_BIT-2)) -1) <<1) +1) : ~(type)0)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
../../Python/pytime.c:352:14: warning: implicit conversion from 'long long' to 'double' changes value from 9223372036854775807 to 9223372036854775808 [-Wimplicit-const-int-float-conversion]
if (!_Py_InIntegralTypeRange(time_t, intpart)) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../Include/internal/pycore_pymath.h:72:45: note: expanded from macro '_Py_InIntegralTypeRange'
(_Py_IntegralTypeMin(type) <= v && v <= _Py_IntegralTypeMax(type))
~~^~~~~~~~~~~~~~~~~~~~~~~~~
../../Include/internal/pycore_pymath.h:61:88: note: expanded from macro '_Py_IntegralTypeMax'
(_Py_IS_TYPE_SIGNED(type) ? (((((type)1<< (sizeof(type)*CHAR_BIT-2)) -1) <<1) +1) : ~(type)0)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
../../Python/pytime.c:518:10: warning: implicit conversion from 'long long' to 'double' changes value from 9223372036854775807 to 9223372036854775808 [-Wimplicit-const-int-float-conversion]
if (!_Py_InIntegralTypeRange(_PyTime_t, d)) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../Include/internal/pycore_pymath.h:72:45: note: expanded from macro '_Py_InIntegralTypeRange'
(_Py_IntegralTypeMin(type) <= v && v <= _Py_IntegralTypeMax(type))
~~^~~~~~~~~~~~~~~~~~~~~~~~~
../../Include/internal/pycore_pymath.h:61:88: note: expanded from macro '_Py_IntegralTypeMax'
(_Py_IS_TYPE_SIGNED(type) ? (((((type)1<< (sizeof(type)*CHAR_BIT-2)) -1) <<1) +1) : ~(type)0)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
3 warnings generated.
../../Modules/expat/xmlparse.c:3107:9: warning: code will never be executed [-Wunreachable-code]
parser->m_characterDataHandler(parser->m_handlerArg, parser->m_dataBuf,
^~~~~~
../../Modules/expat/xmlparse.c:3106:16: note: silence by adding parentheses to mark code as explicitly dead
elseif (0&& parser->m_characterDataHandler)
^/*DISABLESCODE*/ ( )
../../Modules/expat/xmlparse.c:4050:9: warning: code will never be executed [-Wunreachable-code]
parser->m_characterDataHandler(parser->m_handlerArg, parser->m_dataBuf,
^~~~~~
../../Modules/expat/xmlparse.c:4049:16: note: silence by adding parentheses to mark code as explicitly dead
elseif (0&& parser->m_characterDataHandler)
^/*DISABLESCODE*/ ( )
../../Modules/expat/xmlparse.c:7681:11: warning: format specifies type 'int' but the argument has type 'ptrdiff_t' (aka 'long') [-Wformat]
bytesMore, (account ==XML_ACCOUNT_DIRECT) ?"DIR" : "EXP",
^~~~~~~~~
3 warnings generated.
../../Modules/socketmodule.c:4027:33: warning: comparison of integers of different signs: 'unsigned long' and 'long' [-Wsign-compare]
cmsgh !=NULL; cmsgh = CMSG_NXTHDR(&msg, cmsgh)) {
^~~~~~~~~~~~~~~~~~~~~~~~
/opt/buildbot/.emscripten_cache/sysroot/include/sys/socket.h:356:44: note: expanded from macro 'CMSG_NXTHDR'
__CMSG_LEN(cmsg) + sizeof(struct cmsghdr) >= __MHDR_END(mhdr) - (unsigned char *)(cmsg) \
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../Modules/socketmodule.c:4080:33: warning: comparison of integers of different signs: 'unsigned long' and 'long' [-Wsign-compare]
cmsgh !=NULL; cmsgh = CMSG_NXTHDR(&msg, cmsgh)) {
^~~~~~~~~~~~~~~~~~~~~~~~
/opt/buildbot/.emscripten_cache/sysroot/include/sys/socket.h:356:44: note: expanded from macro 'CMSG_NXTHDR'
__CMSG_LEN(cmsg) + sizeof(struct cmsghdr) >= __MHDR_END(mhdr) - (unsigned char *)(cmsg) \
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../Modules/socketmodule.c:4706:54: warning: comparison of integers of different signs: 'unsigned long' and 'long' [-Wsign-compare]
cmsgh = (i ==0) ? CMSG_FIRSTHDR(&msg) : CMSG_NXTHDR(&msg, cmsgh);^~~~~~~~~~~~~~~~~~~~~~~~
/opt/buildbot/.emscripten_cache/sysroot/include/sys/socket.h:356:44: note: expanded from macro 'CMSG_NXTHDR'
__CMSG_LEN(cmsg) + sizeof(struct cmsghdr) >= __MHDR_END(mhdr) - (unsigned char *)(cmsg) \
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3 warnings generated.
../../Modules/_sqlite/connection.c:2125:19: warning: result of comparison of constant 9223372036854775807 with expression of type 'Py_ssize_t' (aka 'long') is always false [-Wtautological-constant-out-of-range-compare]
if (data->len>9223372036854775807) { // (1<<63) -1~~~~~~~~~^~~~~~~~~~~~~~~~~~~~
1 warning generated.
../../Modules/_testcapi/heaptype.c:279:19: warning: unused variable 'class_tp' [-Wunused-variable]
PyTypeObject *class_tp = (PyTypeObject *)class;^
../../Modules/_testcapi/heaptype.c:280:23: warning: unused variable 'class_ht' [-Wunused-variable]
PyHeapTypeObject *class_ht = (PyHeapTypeObject *)class;^
2 warnings generated.
mcc: warning: USE_PTHREADS + ALLOW_MEMORY_GROWTH may run non-wasm code slowly, see https://github.com/WebAssembly/design/issues/1271 [-Wpthreads-mem-growth]make: *** [Makefile:1805: buildbottest] Error 2
Cannot open file '/opt/buildbot/bcannon-wasm/3.x.bcannon-wasm.emscripten-node-pthreads/build/build/build_oot/host/test-results.xml' for upload

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot wasm32-wasi 3.x has failed when building commit 9d51599.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/1046/builds/391) and take a look at the build logs.
4. Check if the failure is related to this commit (9d51599) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/1046/builds/391

Failed tests:

• test_os

Summary of the results of the build (if available):

== Tests result: FAILURE ==

328 tests OK.

10 slowest tests:

• test_tokenize: 49.0 sec
• test_unparse: 31.3 sec
• test_capi: 31.0 sec
• test_lib2to3: 30.5 sec
• test_unicodedata: 23.8 sec
• test_statistics: 17.5 sec
• test_pickle: 12.7 sec
• test_decimal: 12.4 sec
• test_buffer: 12.0 sec
• test_set: 8.6 sec

1 test failed:
test_os

106 tests skipped:
test__xxsubinterpreters test_asyncgen test_asynchat test_asyncio
test_asyncore test_bz2 test_check_c_globals test_clinic
test_cmd_line test_concurrent_futures test_contextlib_async
test_ctypes test_curses test_dbm_gnu test_dbm_ndbm test_devpoll
test_doctest test_docxmlrpc test_dtrace test_embed test_epoll
test_faulthandler test_fcntl test_file_eintr test_fork1
test_ftplib test_gdb test_grp test_gzip test_httplib
test_httpservers test_idle test_imaplib test_interpreters
test_ioctl test_kqueue test_launcher test_lzma test_mailbox
test_mmap test_msilib test_multiprocessing_fork
test_multiprocessing_forkserver test_multiprocessing_main_handling
test_multiprocessing_spawn test_nis test_openpty test_ossaudiodev
test_pdb test_pipes test_poll test_poplib test_pty test_pwd
test_queue test_readline test_regrtest test_repl test_resource
test_select test_selectors test_smtplib test_smtpnet test_socket
test_socketserver test_spwd test_sqlite3 test_ssl
test_stable_abi_ctypes test_startfile test_subprocess
test_sys_settrace test_syslog test_tcl test_telnetlib test_thread
test_threadedtempfile test_threading test_threading_local test_tix
test_tkinter test_tools test_ttk test_ttk_textonly test_turtle
test_urllib test_urllib2 test_urllib2_localnet test_urllib2net
test_urllib_response test_urllibnet test_venv test_wait3
test_wait4 test_webbrowser test_winconsoleio test_winreg
test_winsound test_wsgiref test_xmlrpc test_xmlrpc_net
test_xxlimited test_zipfile64 test_zipimport_support test_zlib
test_zoneinfo
0:04:47 load avg: 3.80
0:04:47 load avg: 3.80 Re-running failed tests is not supported with --python host runner option.

Total duration: 4 min 47 sec

Click to see traceback logs

Traceback (most recent call last):
File "/Lib/asyncio/base_events.py", line 691, in __del__self.close()
File "/Lib/asyncio/unix_events.py", line 68, in closesuper().close()
File "/Lib/asyncio/selector_events.py", line 91, in closeself._close_self_pipe()
File "/Lib/asyncio/selector_events.py", line 98, in _close_self_pipeself._remove_reader(self._ssock.fileno())
^^^^^^^^^^^AttributeError: '_UnixSelectorEventLoop' object has no attribute '_ssock'
Traceback (most recent call last):
File "/Lib/test/libregrtest/runtest.py", line 360, in _runtest_inner
refleak = _runtest_inner2(ns, test_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Lib/test/libregrtest/runtest.py", line 317, in _runtest_inner2
test_runner()
File "/Lib/test/libregrtest/runtest.py", line 281, in _test_module
support.run_unittest(tests)
File "/Lib/test/support/__init__.py", line 1216, in run_unittest
_run_suite(suite)
File "/Lib/test/support/__init__.py", line 1090, in _run_suite
result = runner.run(suite)
^^^^^^^^^^^^^^^^^
File "/Lib/unittest/runner.py", line 208, in run
test(result)
File "/Lib/unittest/suite.py", line 84, in __call__returnself.run(*args, **kwds)
^^^^^^^^^^^^^^^^^^^^^^^
File "/Lib/unittest/suite.py", line 122, in run
test(result)
File "/Lib/unittest/suite.py", line 84, in __call__returnself.run(*args, **kwds)
^^^^^^^^^^^^^^^^^^^^^^^
File "/Lib/unittest/suite.py", line 122, in run
test(result)
File "/Lib/unittest/suite.py", line 84, in __call__returnself.run(*args, **kwds)
^^^^^^^^^^^^^^^^^^^^^^^
File "/Lib/unittest/suite.py", line 122, in run
test(result)
File "/Lib/unittest/case.py", line 678, in __call__returnself.run(*args, **kwds)
^^^^^^^^^^^^^^^^^^^^^^^
File "/Lib/unittest/async_case.py", line 129, in runself._setupAsyncioRunner()
File "/Lib/unittest/async_case.py", line 122, in _setupAsyncioRunner
runner.get_loop()
File "/Lib/asyncio/runners.py", line 82, in get_loopself._lazy_init()
File "/Lib/asyncio/runners.py", line 136, in _lazy_initself._loop = events.new_event_loop()
^^^^^^^^^^^^^^^^^^^^^^^
File "/Lib/asyncio/events.py", line 805, in new_event_loopreturn get_event_loop_policy().new_event_loop()
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Lib/asyncio/events.py", line 695, in new_event_loopreturnself._loop_factory()
^^^^^^^^^^^^^^^^^^^^
File "/Lib/asyncio/unix_events.py", line 64, in __init__super().__init__(selector)
File "/Lib/asyncio/selector_events.py", line 56, in __init__self._make_self_pipe()
File "/Lib/asyncio/selector_events.py", line 107, in _make_self_pipeself._ssock, self._csock = socket.socketpair()
^^^^^^^^^^^^^^^^^^^
File "/Lib/socket.py", line 631, in socketpair
lsock = socket(family, type, proto)
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Lib/socket.py", line 233, in __init__
_socket.socket.__init__(self, family, type, proto, fileno)
OSError: [Errno 58] Not supported

[gvanrossum]

Urm, the WebAssembly buildbot failures are actually due to our test. We need to fix this before we can backport. Apparently by forcing a call to new_event_loop() we are forcing a call to socket.socketpair() which doesn't work on WASM. I don't know what the magic incantation is to skip a test on WASM. I'll ask on Discord.

[gvanrossum]

Rest of the discussion in the corresponding issue, starting at #95736 (comment)