Eryk Sun <eryk...@gmail.com> added the comment:
For Windows, the default console control handler calls
ExitProcess(STATUS_CONTROL_C_EXIT). If CMD is waiting on an application that
exits with STATUS_CONTROL_C_EXIT, it prints "^C" to indicate the process was
killed by Ctrl+C. For example:
>>> STATUS_CONTROL_C_EXIT = 0xC000013A - 2**32
>>> STATUS_CONTROL_C_EXIT
-1073741510
>>> sys.exit(STATUS_CONTROL_C_EXIT)
^C
C:\>echo %errorlevel%
-1073741510
Note that switching to SIG_DFL with raise(SIGINT) does not invoke the default
console control handler in Windows. It just invokes the default raise()
behavior, which is to call _exit(3). This exit status value of 3 is arbitrary
and meaningless.
----------
nosy: +eryksun
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue1054041>
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