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bug#11236: 24.1.50; Maximum buffer size exceeded

From: Paul Eggert
Subject: bug#11236: 24.1.50; Maximum buffer size exceeded
Date: Sun, 22 Apr 2012 22:12:36 -0700
User-agent: Mozilla/5.0 (X11; Linux i686; rv:11.0) Gecko/20120329 Thunderbird/11.0.1

> the struct st, which has:
>   ...
>   st_size = 5425793530331136,
>   st_blocks = 10617159159808,
> Ls delivers:
>       gls -lin lisp/loaddefs.el
>       43973072 -rw-r--r-- 1 501 80 1263291 16. Apr 10:40 lisp/loaddefs.el

Since 5425793530331136 == 1263291 << 32, this suggests that
there's a mismatch between the ABI that Emacs is assuming
and the ABI that the 'stat' system call is actually using.

Perhaps it's a bug in the way largefile mode is being set up (see
Autoconf's AC_SYS_LARGFILE, which Emacs uses).  Perhaps some code is
compiled in largefile mode, and other code is not -- that's a no-no.
Or, as Andreas Schwab suggests, if you're mixing code that's compiled
by incompatible compilers, that would cause these symptoms.

One other thought: is Emacs invoking 'stat' directly, or indirectly
via the 'stat' defined in lib/stat.c?  If the latter, perhaps there's
something messed up with the indirection.

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