$ cat Dockerfile 
FROM centos:7

RUN yum install yum-utils && \
    yum-builddep python3 -y

RUN yum install centos-release-scl epel-release -y && \
    yum install devtoolset-10 openssl11-devel -y

ENV PATH=/opt/rh/devtoolset-10/root/usr/bin:$PATH


$ docker build . -t cpython-build
$ docker run -it --rm cpython-build


# cd /tmp/
# git clone https://github.com/python/cpython.git
# cd cpython/
# export CFLAGS=$(pkg-config --cflags openssl11)
# export LDFLAGS=$(pkg-config --libs openssl11)
# ./configure --with-system-expat && make -j && make -j test
...
0:00:09 load avg: 9.85 [ 66/427/1] test_sax crashed (Exit code -11)
Fatal Python error: Segmentation fault                                                                   
                                                                                                         
Current thread 0x00007f246d646740 (most recent call first):                                              
  File "/tmp/cpython/Lib/xml/sax/expatreader.py", line 278 in reset                                      
  File "/tmp/cpython/Lib/xml/sax/expatreader.py", line 208 in feed
  File "/tmp/cpython/Lib/xml/sax/xmlreader.py", line 125 in parse
  File "/tmp/cpython/Lib/xml/sax/expatreader.py", line 111 in parse        
  File "/tmp/cpython/Lib/test/test_sax.py", line 728 in test_5027_1  
  File "/tmp/cpython/Lib/unittest/case.py", line 547 in _callTestMethod
  File "/tmp/cpython/Lib/unittest/case.py", line 591 in run
  File "/tmp/cpython/Lib/unittest/case.py", line 646 in __call__
  File "/tmp/cpython/Lib/unittest/suite.py", line 122 in run
  File "/tmp/cpython/Lib/unittest/suite.py", line 84 in __call__
  File "/tmp/cpython/Lib/unittest/suite.py", line 122 in run
  File "/tmp/cpython/Lib/unittest/suite.py", line 84 in __call__
  File "/tmp/cpython/Lib/unittest/suite.py", line 122 in run
  File "/tmp/cpython/Lib/unittest/suite.py", line 84 in __call__
  File "/tmp/cpython/Lib/test/support/testresult.py", line 140 in run
  File "/tmp/cpython/Lib/test/support/__init__.py", line 992 in _run_suite
  File "/tmp/cpython/Lib/test/support/__init__.py", line 1118 in run_unittest
  File "/tmp/cpython/Lib/test/libregrtest/runtest.py", line 261 in _test_module
  File "/tmp/cpython/Lib/test/libregrtest/runtest.py", line 297 in _runtest_inner2
  File "/tmp/cpython/Lib/test/libregrtest/runtest.py", line 340 in _runtest_inner
  File "/tmp/cpython/Lib/test/libregrtest/runtest.py", line 215 in _runtest
  File "/tmp/cpython/Lib/test/libregrtest/runtest.py", line 245 in runtest
  File "/tmp/cpython/Lib/test/libregrtest/runtest_mp.py", line 83 in run_tests_worker
  File "/tmp/cpython/Lib/test/libregrtest/main.py", line 678 in _main
  File "/tmp/cpython/Lib/test/libregrtest/main.py", line 658 in main
  File "/tmp/cpython/Lib/test/libregrtest/main.py", line 736 in main
  File "/tmp/cpython/Lib/test/regrtest.py", line 43 in _main
  File "/tmp/cpython/Lib/test/regrtest.py", line 47 in <module>
  File "/tmp/cpython/Lib/runpy.py", line 86 in _run_code
  File "/tmp/cpython/Lib/runpy.py", line 196 in _run_module_as_main

Extension modules: _testcapi (total: 1)
...
== Tests result: FAILURE ==                                                                              
                                                                                                         
403 tests OK.                                                                                            

11 tests failed:                       
    test_minidom test_multiprocessing_fork                                                               
    test_multiprocessing_forkserver test_multiprocessing_spawn
    test_plistlib test_pulldom test_pyexpat test_sax test_xml_etree
    test_xml_etree_c test_xmlrpc

13 tests skipped:
    test_devpoll test_ioctl test_kqueue test_msilib test_ossaudiodev
    test_startfile test_tix test_tk test_ttk_guionly test_winconsoleio
    test_winreg test_winsound test_zipfile64
...


# git checkout 9746cda705decebc0ba572d95612796afd06dcd4 Modules/pyexpat.c
# make clean
# ./configure --with-system-expat && make -j && make -j test
...
== Tests result: SUCCESS ==

414 tests OK.

13 tests skipped:
    test_devpoll test_ioctl test_kqueue test_msilib test_ossaudiodev
    test_startfile test_tix test_tk test_ttk_guionly test_winconsoleio
    test_winreg test_winsound test_zipfile64

Total duration: 6 min 24 sec
Tests result: SUCCESS