`test_external_inspection.TestGetStackTrace.test_self_trace` fails when building with `--enable-shared`

[colesbury]

When Python is built with --enable-shared, TestGetStackTrace.test_self_trace hangs or fails.

OS: Ubuntu 22.04.2 LTS on x86-64

test_remote_stack_trace (test.test_external_inspection.TestGetStackTrace.test_remote_stack_trace) ... /raid/sgross/cpython/python: error while loading shared libraries: libpython3.14d.so.1.0: cannot open shared object file: No such file or directory

Also seen:

test_self_trace (test.test_external_inspection.TestGetStackTrace.test_self_trace) ... ERROR

======================================================================
ERROR: test_self_trace (test.test_external_inspection.TestGetStackTrace.test_self_trace)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/raid/sgross/cpython/Lib/test/test_external_inspection.py", line 80, in test_self_trace
    stack_trace = get_stack_trace(os.getpid())
RuntimeError: No interpreter state found

----------------------------------------------------------------------
Ran 2 tests in 0.169s

[Zheaoli]

Weird, I can not reproduce it in my environment

╰─ ./python -m unittest -v test.test_external_inspection.TestGetStackTrace.test_remote_stack_trace
test_remote_stack_trace (test.test_external_inspection.TestGetStackTrace.test_remote_stack_trace) ... abc
ok

----------------------------------------------------------------------
Ran 1 test in 0.097s

OK

╭─   manjusaka@manjusaka-garuda   ~/Documents/projects/cpython   3.13-dev                                                                                                                                                 main ⇣1 *4 !1 ?16   01:48:19  
╰─ uname -a 
Linux manjusaka-garuda 6.11.3-manjusakav4-xanmod1-1-manjusaka #1 SMP PREEMPT_DYNAMIC Fri, 11 Oct 2024 12:02:09 +0000 x86_64 GNU/Linux

[colesbury]

This is the command that failed for me: ./python -m test test_external_inspection

[pablogsal]

I cannot reproduce this anymore in an Ubuntu 22.04 container:

root@ae7c340c1327:/src# uname -a
Linux ae7c340c1327 6.12.10-arch1-1 #1 SMP PREEMPT_DYNAMIC Sat, 18 Jan 2025 02:26:57 +0000 x86_64 x86_64 x86_64 GNU/Linux
root@ae7c340c1327:/src# cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=22.04
DISTRIB_CODENAME=jammy
DISTRIB_DESCRIPTION="Ubuntu 22.04.5 LTS"
root@ae7c340c1327:/src# LD_LIBRARY_PATH=$PWD ./python -m sysconfig | grep shared
	BLDSHARED = "gcc -shared"
	CONFIG_ARGS = "'--with-pydebug' '--enable-shared'"
	LDCXXSHARED = "g++ -shared"
	LDSHARED = "gcc -shared"
root@ae7c340c1327:/src# LD_LIBRARY_PATH=$PWD ./python -m test test_external_inspection -v
== CPython 3.14.0a4+ (main, Jan 30 2025, 21:16:58) [GCC 11.4.0]
== Linux-6.12.10-arch1-1-x86_64-with-glibc2.35 little-endian
== Python build: debug shared
== cwd: /src/build/test_python_worker_14964æ
== CPU count: 36
== encodings: locale=UTF-8 FS=utf-8
== resources: all test resources are disabled, use -u option to unskip tests

Using random seed: 1438977930
0:00:00 load avg: 1.84 Run 1 test sequentially in a single process
0:00:00 load avg: 1.84 [1/1] test_external_inspection
test_async_gather_remote_stack_trace (test.test_external_inspection.TestGetStackTrace.test_async_gather_remote_stack_trace) ... ok
test_async_remote_stack_trace (test.test_external_inspection.TestGetStackTrace.test_async_remote_stack_trace) ... ok
test_async_staggered_race_remote_stack_trace (test.test_external_inspection.TestGetStackTrace.test_async_staggered_race_remote_stack_trace) ... ok
test_asyncgen_remote_stack_trace (test.test_external_inspection.TestGetStackTrace.test_asyncgen_remote_stack_trace) ... ok
test_remote_stack_trace (test.test_external_inspection.TestGetStackTrace.test_remote_stack_trace) ... ok
test_self_trace (test.test_external_inspection.TestGetStackTrace.test_self_trace) ... ok

----------------------------------------------------------------------
Ran 6 tests in 0.631s

OK

== Tests result: SUCCESS ==

1 test OK.

Total duration: 697 ms
Total tests: run=6
Total test files: run=1/1
Result: SUCCESS

So I am closing this for now. Please reopen if we missed anything