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From: Paul Eggert <eggert@cs.ucla.edu>
To: Eli Zaretskii <eliz@gnu.org>
Cc: monnier@IRO.UMontreal.CA, emacs-devel@gnu.org
Subject: Re: Lisp_Marker size on 32bit systems
Date: Fri, 7 Sep 2018 06:45:48 -0700	[thread overview]
Message-ID: <b078491f-5d6f-68c8-b70d-41537a37f463@cs.ucla.edu> (raw)
In-Reply-To: <83bm99vijd.fsf@gnu.org>

Eli Zaretskii wrote:
> The current master fails to build in the x86 32-bit configuration with
> wide ints:
> 
>    In file included from lisp.h:35:0,
> 		   from window.c:25:
>    ../lib/verify.h:207:21: error: static assertion failed: "verify (header_size == sizeof (union vectorlike_header))"

It works for me in that configuration in Fedora 28. I get the following values; 
what do you get?

sizeof (ptrdiff_t) = 4
sizeof (union vectorlike_header) = 4
offsetof (struct Lisp_Vector, contents) = 4
offsetof (struct Lisp_Sub_Char_Table, depth) == 4
offsetof (struct Lisp_Sub_Char_Table, contents) == 12

If you're getting different values, it could be that the fact that the code ever 
worked at all is just luck.

I am using gcc  8.1.1 20180712 (Red Hat 8.1.1-5), and configure this way 
(because many modules don't work in 32-bit mode):

./configure --with-wide-int CC=gcc -m32 -march=native --enable-gcc-warnings 
--without-sound --without-dbus --without-file-notification --without-gconf 
--without-gif --without-gsettings --without-imagemagick --without-rsvg 
--with-x-toolkit=no --with-modules




  reply	other threads:[~2018-09-07 13:45 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-06  0:41 Lisp_Marker size on 32bit systems Stefan Monnier
2018-09-06  6:51 ` Paul Eggert
2018-09-06 12:17   ` Stefan Monnier
2018-09-07  7:15     ` Paul Eggert
2018-09-07  8:05       ` Eli Zaretskii
2018-09-07 13:45         ` Paul Eggert [this message]
2018-09-07 14:12           ` GDB and compiler-operations (was: Lisp_Marker size on 32bit systems) Stefan Monnier
2018-09-07 14:23             ` Eli Zaretskii
2018-09-07 15:16             ` GDB and compiler-operations Andreas Schwab
2018-09-07 15:48             ` GDB and compiler-operations (was: Lisp_Marker size on 32bit systems) Paul Eggert
2018-09-07 15:58               ` GDB and compiler-operations Stefan Monnier
2018-09-07 17:11                 ` Eli Zaretskii
2018-09-07 17:15                 ` Paul Eggert
2018-09-07 19:59             ` Tom Tromey
2018-09-07 14:19           ` Lisp_Marker size on 32bit systems Eli Zaretskii
2018-09-07 16:27             ` Paul Eggert
2018-09-07 17:16               ` Eli Zaretskii
2018-09-07 18:13                 ` Paul Eggert
2018-09-07 18:32                   ` Eli Zaretskii
2018-09-07 19:05                     ` Paul Eggert
2018-09-07 19:22                       ` Eli Zaretskii
2018-09-07 12:16       ` Stefan Monnier
2018-09-07 19:04         ` Paul Eggert
2018-09-07 19:45           ` Stefan Monnier
2018-09-07 21:03             ` Paul Eggert
2018-09-08  1:54               ` Stefan Monnier
2018-09-08  3:04                 ` Paul Eggert
2018-09-08  3:10                   ` Stefan Monnier

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