Pre-release failures in Windows tests

[effigies]

The last passing action was: https://github.com/nipy/nibabel/actions/runs/3286366798/jobs/5414393925

• Pre-release packages:
  • numpy-1.24.0.dev0+934.gdb7414b7f
  • scipy-1.10.0.dev0+1556.df6da9a
  • matplotlib-3.7.0.dev407+g101cbaa60f

The first failing action was: https://github.com/nipy/nibabel/actions/runs/3294239687/jobs/5431558155

• Pre-release packages:
  • numpy-1.24.0.dev0+973.g7776bc616
  • scipy-1.10.0.dev0+1556.df6da9a
  • matplotlib-3.7.0.dev407+g101cbaa60f

..\virtenv\lib\site-packages\nibabel\tests\test_floating.py::test_check_nmant_nexp PASSED [ 48%]
Windows fatal exception: stack overflow

Thread 0x00000ca4 (most recent call first):
  File "C:\hostedtoolcache\windows\Python\3.9.13\x64\lib\selectors.py", line 315 in _select
  File "C:\hostedtoolcache\windows\Python\3.9.13\x64\lib\selectors.py", line 324 in select
  File "C:\hostedtoolcache\windows\Python\3.9.13\x64\lib\socketserver.py", line 232 in serve_forever
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\werkzeug\serving.py", line 741 in serve_forever
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\pytest_httpserver\httpserver.py", line 684 in thread_target
  File "C:\hostedtoolcache\windows\Python\3.9.13\x64\lib\threading.py", line 917 in run
  File "C:\hostedtoolcache\windows\Python\3.9.13\x64\lib\threading.py", line 980 in _bootstrap_inner
  File "C:\hostedtoolcache\windows\Python\3.9.13\x64\lib\threading.py", line 937 in _bootstrap

Current thread 0x0000022c (most recent call first):
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\nibabel\casting.py", line 402 in as_int
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\nibabel\tests\test_floating.py", line 116 in test_as_int
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\_pytest\python.py", line 192 in pytest_pyfunc_call
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\pluggy\_callers.py", line 39 in _multicall
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\pluggy\_manager.py", line 80 in _hookexec
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\pluggy\_hooks.py", line 265 in __call__
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\_pytest\python.py", line 1761 in runtest
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\_pytest\runner.py", line 166 in pytest_runtest_call
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\pluggy\_callers.py", line 39 in _multicall
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\pluggy\_manager.py", line 80 in _hookexec
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\pluggy\_hooks.py", line 265 in __call__
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\_pytest\runner.py", line 259 in <lambda>
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\_pytest\runner.py", line 338 in from_call
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\_pytest\runner.py", line 258 in call_runtest_hook
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\_pytest\runner.py", line 219 in call_and_report
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\_pytest\runner.py", line 130 in runtestprotocol
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\_pytest\runner.py", line 111 in pytest_runtest_protocol
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\pluggy\_callers.py", line 39 in _multicall
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\pluggy\_manager.py", line 80 in _hookexec
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\pluggy\_hooks.py", line 265 in __call__
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\_pytest\main.py", line 347 in pytest_runtestloop
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\pluggy\_callers.py", line 39 in _multicall
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\pluggy\_manager.py", line 80 in _hookexec
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\pluggy\_hooks.py", line 265 in __call__
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\_pytest\main.py", line 322 in _main
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\_pytest\main.py", line 268 in wrap_session
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\_pytest\main.py", line 315 in pytest_cmdline_main
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\pluggy\_callers.py", line 39 in _multicall
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\pluggy\_manager.py", line 80 in _hookexec
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\pluggy\_hooks.py", line 265 in __call__
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\_pytest\config\__init__.py", line 164 in main
  File "D:\a\nibabel\nibabel\virtenv\lib\site-packages\_pytest\config\__init__.py", line 187 in console_main
  File "D:\a\nibabel\nibabel\virtenv\Scripts\pytest.exe\__main__.py", line 7 in <module>
  File "C:\hostedtoolcache\windows\Python\3.9.13\x64\lib\runpy.py", line 87 in _run_code
  File "C:\hostedtoolcache\windows\Python\3.9.13\x64\lib\runpy.py", line 197 in _run_module_as_main
..\virtenv\lib\site-packages\nibabel\tests\test_floating.py::test_as_int 
Error: Process completed with exit code 127.

The failing test seems to be here:

nibabel/nibabel/tests/test_floating.py

Lines 105 to 133 in 62aea04

	def test_as_int():
	# Integer representation of number
	assert as_int(2.0) == 2
	assert as_int(-2.0) == -2
	with pytest.raises(FloatingError):
	as_int(2.1)
	with pytest.raises(FloatingError):
	as_int(-2.1)
	assert as_int(2.1, False) == 2
	assert as_int(-2.1, False) == -2
	v = np.longdouble(2**64)
	assert as_int(v) == 2**64
	# Have all long doubles got 63+1 binary bits of precision? Windows 32-bit
	# longdouble appears to have 52 bit precision, but we avoid that by checking
	# for known precisions that are less than that required
	try:
	nmant = type_info(np.longdouble)['nmant']
	except FloatingError:
	nmant = 63 # Unknown precision, let's hope it's at least 63
	v = np.longdouble(2) ** (nmant + 1) - 1
	assert as_int(v) == 2**(nmant + 1) - 1
	# Check for predictable overflow
	nexp64 = floor_log2(type_info(np.float64)['max'])
	with np.errstate(over='ignore'):
	val = np.longdouble(2**nexp64) * 2 # outside float64 range
	with pytest.raises(OverflowError):
	as_int(val)
	with pytest.raises(OverflowError):
	as_int(-val)

[effigies]

Looking at the diff between the two numpy commits: numpy/numpy@db7414b...7776bc6

Most likely PR in that range looks like numpy/numpy#21875.

About to go on vacation. Will try to reproduce on a Windows box when I have a chance.