building python 2.7.15 on archlinux32 (the i686 branch of archlinux) from source succeeds, but running the testsuite (with some segfaulting tests disabled - see issue34095) results in an assertion error:

test_wrongsize (test.test_audioop.TestAudioop) ... test test_audioop failed -- Traceback (most recent call last):
  File "/home/vagrant/python2/src/Python-2.7.15/Lib/test/test_audioop.py", line 48, in test_max
    self.assertEqual(audioop.max(p(minvalues[w]), w), -minvalues[w])
AssertionError: -2147483648 != 2147483648L

ok

======================================================================
FAIL: test_max (test.test_audioop.TestAudioop)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/vagrant/python2/src/Python-2.7.15/Lib/test/test_audioop.py", line 48, in test_max
    self.assertEqual(audioop.max(p(minvalues[w]), w), -minvalues[w])
AssertionError: -2147483648 != 2147483648L



The commands leading to this are:

  cd Python-${pkgver}

  # Temporary workaround for FS#22322
  # See http://bugs.python.org/issue10835 for upstream report
  sed -i "/progname =/s/python/python${_pybasever}/" Python/pythonrun.c

  # Enable built-in SQLite module to load extensions (fix FS#22122)
  sed -i "/SQLITE_OMIT_LOAD_EXTENSION/d" setup.py

  # FS#23997
  sed -i -e "s|^#.* /usr/local/bin/python|#!/usr/bin/python2|" Lib/cgi.py

  sed -i "s/python2.3/python2/g" Lib/distutils/tests/test_build_scripts.py \
    Lib/distutils/tests/test_install_scripts.py

  # Ensure that we are using the system copy of various libraries (expat, zlib and libffi),
  # rather than copies shipped in the tarball
  rm -r Modules/expat
  rm -r Modules/zlib
  rm -r Modules/_ctypes/{darwin,libffi}*

  # clean up #!s
  find . -name '*.py' | \
    xargs sed -i "s|#[ ]*![ ]*/usr/bin/env python$|#!/usr/bin/env python2|"

  # Workaround asdl_c.py/makeopcodetargets.py errors after we touched the shebangs
  touch Include/Python-ast.h Python/Python-ast.c Python/opcode_targets.h

  # FS#48761
  # http://bugs.python.org/issue25750
  patch -Np1 -i ../descr_ref.patch

  export OPT="${CFLAGS}"
  ./configure --prefix=/usr \
              --enable-shared \
              --with-threads \
              --enable-optimizations \
              --with-lto \
              --enable-ipv6 \
              --enable-unicode=ucs4 \
              --with-system-expat \
              --with-system-ffi \
              --with-dbmliborder=gdbm:ndbm \
              --without-ensurepip

  make

  LD_LIBRARY_PATH="${srcdir}/Python-${pkgver}":${LD_LIBRARY_PATH} \
    xvfb-run "${srcdir}/Python-${pkgver}/python" -m test.regrtest -v -uall -x test_idle test_bytes test_str test_string test_unicode test_userstring test_tuple test_tk test_ttk_guionly test_ctypes 2>&1 | tee log.reduced