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bug#6430: Emacs WINDOWS truncates exit status of processes to 8 bits
From: |
Óscar Fuentes |
Subject: |
bug#6430: Emacs WINDOWS truncates exit status of processes to 8 bits |
Date: |
Wed, 15 Jun 2016 20:22:25 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.0.92 (gnu/linux) |
Eli Zaretskii <eliz@gnu.org> writes:
>> When using --with-wide-int (or when running on Windows 64bits) we have
>> the full 32 bits, right?
>
> No. The 2 bits are reserved by Windows, not by Emacs integer's
> representation. To see that in action, interrupt a program with
> Ctrl-C and look at the exit status: you will see 0xC000013A; the
> 0xC0000000 bits are the reserved ones. (There are more values for
> other fatal exit reasons, but all of them set those 2 bits.)
I thought that the limitation you referred to was about how many bits
Emacs has for representing integers on 32 bit platforms. The upper 2
bits reserved by Windows is an integral part of the exit code. A process
can return any value on the 32 bit range.
- bug#6430: Emacs WINDOWS truncates exit status of processes to 8 bits, (continued)
- bug#6430: Emacs WINDOWS truncates exit status of processes to 8 bits, Noam Postavsky, 2016/06/14
- bug#6430: Emacs WINDOWS truncates exit status of processes to 8 bits, Eli Zaretskii, 2016/06/14
- bug#6430: Emacs WINDOWS truncates exit status of processes to 8 bits, Óscar Fuentes, 2016/06/15
- bug#6430: Emacs WINDOWS truncates exit status of processes to 8 bits, Eli Zaretskii, 2016/06/15
- bug#6430: Emacs WINDOWS truncates exit status of processes to 8 bits, Óscar Fuentes, 2016/06/15
- bug#6430: Emacs WINDOWS truncates exit status of processes to 8 bits, Eli Zaretskii, 2016/06/15
- bug#6430: Emacs WINDOWS truncates exit status of processes to 8 bits, Óscar Fuentes, 2016/06/15
- bug#6430: Emacs WINDOWS truncates exit status of processes to 8 bits, Eli Zaretskii, 2016/06/15
- bug#6430: Emacs WINDOWS truncates exit status of processes to 8 bits, Óscar Fuentes, 2016/06/15
- bug#6430: Emacs WINDOWS truncates exit status of processes to 8 bits, Eli Zaretskii, 2016/06/15
- bug#6430: Emacs WINDOWS truncates exit status of processes to 8 bits,
Óscar Fuentes <=
- bug#6430: Emacs WINDOWS truncates exit status of processes to 8 bits, Eli Zaretskii, 2016/06/15
- bug#6430: Emacs WINDOWS truncates exit status of processes to 8 bits, Óscar Fuentes, 2016/06/15
- bug#6430: Emacs WINDOWS truncates exit status of processes to 8 bits, Eli Zaretskii, 2016/06/15
- bug#6430: Emacs WINDOWS truncates exit status of processes to 8 bits, Óscar Fuentes, 2016/06/16
- bug#6430: Emacs WINDOWS truncates exit status of processes to 8 bits, Eli Zaretskii, 2016/06/16
- bug#6430: Emacs WINDOWS truncates exit status of processes to 8 bits, Óscar Fuentes, 2016/06/16
- bug#6430: Emacs WINDOWS truncates exit status of processes to 8 bits, Eli Zaretskii, 2016/06/16