Subprocess.Popen crash w/ Win10, debug32, bad file, and PIPE

[terryjreedy]

BPO	31228
Nosy	@terryjreedy, @pfmoore, @tjguk, @zware, @zooba
Superseder	bpo-30121: Windows: subprocess debug assertion on failure to execute the process

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2017-08-17.18:52:45.991>
created_at = <Date 2017-08-17.17:28:25.923>
labels = ['3.7', 'library', 'OS-windows', 'type-crash']
title = 'Subprocess.Popen crash w/ Win10, debug32, bad file, and PIPE'
updated_at = <Date 2017-08-17.18:52:45.990>
user = 'https://github.com/terryjreedy'

bugs.python.org fields:

activity = <Date 2017-08-17.18:52:45.990>
actor = 'eryksun'
assignee = 'none'
closed = True
closed_date = <Date 2017-08-17.18:52:45.991>
closer = 'eryksun'
components = ['Library (Lib)', 'Windows']
creation = <Date 2017-08-17.17:28:25.923>
creator = 'terry.reedy'
dependencies = []
files = []
hgrepos = []
issue_num = 31228
keywords = []
message_count = 2.0
messages = ['300445', '300447']
nosy_count = 5.0
nosy_names = ['terry.reedy', 'paul.moore', 'tim.golden', 'zach.ware', 'steve.dower']
pr_nums = []
priority = 'normal'
resolution = 'duplicate'
stage = 'resolved'
status = 'closed'
superseder = '30121'
type = 'crash'
url = 'https://bugs.python.org/issue31228'
versions = ['Python 3.6', 'Python 3.7']

[terryjreedy]

Running Debug|Win32 interpreter...
Python 3.7.0a0 (heads/master:b907abc885, Aug 17 2017, 11:41:56) [MSC v.1900 32 bit (Intel)] on win32

I get the following crash report
--------------------------------------------------------------
Microsoft Visual C++ Runtime Library
(X) Debug Assertion Failed!
Program: F:\dev\3x\PCBuild\win32\python_d.exe
File: minkernel\crts\ucrt\src\appcrt\lowio\close.cpp
Line: 48

Expression: (fh >= 0 && (unsigned)fh < (unsigned)_nhandle
...
(Press Retry to debug the application)
----------------------------------------------------------------

when running the following, extracted from test.pythoninfo

import subprocess
proc = subprocess.Popen(["gdb", "-nx", "--version"],
                        stdout=subprocess.PIPE,
                        stderr=subprocess.PIPE,
                        universal_newlines=True)

If I do any of the following, I get the expected FileNotFound error.

1. Run with installed normal 64-bit 3.6.
2. Replace 'gdb' with 'python' (but 'xyz' still crashes).
3. Remove the std... options or replace subprocess.PIPE with a real file.

[terryjreedy]

Appveyor ran pythoninfo successfully on its normal 32-bit build.
https://ci.appveyor.com/project/python/cpython/build/3.7.0a0.5381