Message10251

Invoking the regression test from cygwin using the jython script results in some failures, eg


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ERROR: test_finalize_with_trace (test.test_threading.ThreadTests)
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Traceback (most recent call last):
  File "C:\cygwin64\home\Adam\jython\dist\Lib\test\test_threading.py", line 314, in test_finalize_with_trace
    p = subprocess.Popen([sys.executable, "-c", """if 1:
  File "C:\cygwin64\home\Adam\jython\dist\Lib\subprocess.py", line 830, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "C:\cygwin64\home\Adam\jython\dist\Lib\subprocess.py", line 1352, in _execute_child
    raise OSError(e.getMessage() or e)
OSError: Cannot run program "C:\cygwin64\home\Adam\jython\dist\bin\jython" (in directory "C:\cygwin64\home\Adam\jython"): CreateProcess error=193, %1 is not a valid Win32 application

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ERROR: test_join_nondaemon_on_shutdown (test.test_threading.ThreadTests)
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Traceback (most recent call last):
  File "C:\cygwin64\home\Adam\jython\dist\Lib\test\test_threading.py", line 348, in test_join_nondaemon_on_shutdown
    p = subprocess.Popen([sys.executable, "-c", """if 1:
  File "C:\cygwin64\home\Adam\jython\dist\Lib\subprocess.py", line 830, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "C:\cygwin64\home\Adam\jython\dist\Lib\subprocess.py", line 1352, in _execute_child
    raise OSError(e.getMessage() or e)
OSError: Cannot run program "C:\cygwin64\home\Adam\jython\dist\bin\jython" (in directory "C:\cygwin64\home\Adam\jython"): CreateProcess error=193, %1 is not a valid Win32 application

Invoking using jython.exe directly, even from cygwin, runs fine. 

Digging around a bit, it seems to be because shell invocation uses the property python.executable in PySystemState.initExecutable() rather than Py.getDefaultExecutable(). Py.getDefaultExecutable() has some platform checking that resolves this by looking explicitly for jython.exe under windows.